ROHM at PCIM Europe 2025: Powerful High<span style='color:red'>light</span>s for E-Mobility and Industrial Applications
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ROHM at PCIM Europe 2025: Powerful Highlights for E-Mobility and Industrial Applications

　　From May 6th to 8th ROHM will exhibit at the PCIM Expo & Conference, the leading international event for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, taking place in Nuremberg. On its booth 304 in hall 9, ROHM will showcase reference projects with renowned partners and present the evolution of its package designs and evaluation boards.　　"PCIM 2025 in Nuremberg is the meeting place for innovation and progress in power electronics. This is where the brightest minds in the industry come together to shape the future of e-mobility and industrial applications. We will be presenting great customer applications to showcase the possibilities offered by our products in the best possible way. Whether in the PV industry or e-mobility sectors – we are involved and would like to talk to our customers on site about the key projects of the future," says Wolfram Harnack, President at ROHM Semiconductor Europe.　　Highlights of ROHM’s presence at PCIM 2025 include:　　For automotive applications, ROHM will exhibit an inverter unit utilizing the TRCDRIVE pack™ that consists of a 2-in-1 SiC Molded Module. Valeo and ROHM have been collaborating since 2022, initially focusing on technical exchange to enhance the performance and efficiency of motor inverters, a key component in the propulsion systems of electric vehicles (EVs) and plug-in hybrids (PHEVs).　　Power solutions for on-board chargers (OBCs), essential for e-mobility applications, will also be on the booth. ROHM will showcase the new EcoSiC™ molded power modules suitable for OBCs, along with OBC applications adopting ROHM’s power semiconductor devices.　　ROHM’s Power Eco Family products: ROHM has grouped the four product lines of power semiconductors under the brand concept “Power Eco Family” and is contributing to the development of a sustainable ecosystem through improved application performance. We will show featured solutions and case studies at the booth.　　In this context, one application example is the new GaN Lineup: ROHM’s EcoGaN™ series of 650V GaN HEMTs in the TOLL package has been adopted for AI server power supplies by Murata Power Solutions, a subsidiary of the Murata Manufacturing Group and a leading supplier of electronic components, batteries and power supplies in Japan. Integrating ROHM’s GaN HEMTs, which combine low loss operation with high-speed switching performance, in Murata Power Solutions’ 5.5kW AI server power supply unit achieves greater efficiency and miniaturization.　　For more information, please refer to AMEYA360’s related news release.　　The details of the Power Eco Family are as follows.　　●　EcoSiC™ is a brand of devices leveraging silicon carbide which is attracting attention in the power device field for performance that surpasses silicon.　　●　EcoGaN™ comprises compact, energy-efficient devices that utilize the low ON resistance, high-speed switching characteristics of GaN to achieve lower application power consumption, smaller peripheral components, and simpler designs requiring fewer parts.　　●　EcoIGBT™ is ROHM’s brand of IGBTs consisting of both devices and modules designed to meet the needs of high-voltage applications in the power device field.　　●　EcoMOS™ is ROHM's brand of silicon power MOSFETs designed for energy-efficient applications in the power device sector.　　During the fair, ROHM’s power experts will participate in several panel discussions and conference presentations. Additionally, they will hold poster sessions at the PCIM Europe 2025 conference.　　More information regarding ROHM’s key highlights at PCIM 2025 is available here: www.rohm.com/pcim　　*EcoSiC™, EcoGaN™, EcoIGBT™, EcoMOS™ and TRCDRIVE pack™ are trademarks or registered trademarks of ROHM Co., Ltd.
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Release time：2025-04-23 17:01 reading：211 Continue reading>>
ROHM Develops a Novel VCSELED™ Infrared Light Source that Combines Features of VCSELs and LEDs
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ROHM Develops a Novel VCSELED™ Infrared Light Source that Combines Features of VCSELs and LEDs

　　ROHM has established VCSELED™, a new infrared light source technology that encapsulates a VCSEL (Vertical Cavity Surface Emitting Laser) element in a resin optical diffusion material for laser light. ROHM is currently developing this technology for commercialization as a light source for improving vehicle Driver Monitoring Systems (DMS) and In-Cabin Monitoring Systems (IMS).　　To further enhance automotive safety, driver monitoring systems are increasingly being installed in vehicles equipped with Advanced Driver Assistance Systems (ADAS) to detect drowsiness, sleepiness, and distracted driving. In Japan, the Ministry of Land, Infrastructure, Transport, and Tourism (MLIT) has created guidelines that define the design and functions of the system, and in the EU, there are plans to make installation mandatory in all new vehicles sold in Europe from July 2024 onwards. Automakers and suppliers are also developing in-vehicle monitoring systems to detect occupants other than the driver, and there is a growing awareness of the need for high-performance light sources that enable detection systems to function with greater precision.　　In response, ROHM has developed VCSELED™ that achieves high-accuracy sensing. Minimal wavelength temperature variation combined with a wide emission beam angle make it ideal not only for in-vehicle monitoring systems, but also contribute to improving the accuracy and performance of inspection systems for robots and industrial equipment as well as spatial recognition and ranging systems.　　VCSELED™ extends the beam (irradiation) angle similar to LEDs by combining a high-performance VCSEL element and light diffusion material to enable sensing over a wider area with higher accuracy than VCSELs. What’s more, the light emitting element and light diffuser are integrated into a compact package, contributing to smaller, thinner applications.　　The VCSEL element used in VCSELED™ features a narrow emission wavelength bandwidth of 4nm, approximately one-seventh that of LEDs. This characteristic improves resolution performance on the receiving side while eliminating the red glow often associated with LEDs. At the same time, a wavelength temperature variation of 0.072nm/°C - less than one-fourth that of LEDs (0.3nm/°C) - allows for high-accuracy sensing unaffected by temperature changes. Furthermore, the response time when emitting light is 2ns, approx. 7.5 times faster than LEDs, contributing to higher performance in ToF (Time of Flight) applications that use infrared light to measure distance.　　ROHM is working on commercializing VCSELED™ as a new technology brand for infrared light source components. Prototype samples is available for purchase now, with mass production samples for consumer scheduled for release in October 2024 and automotive use in 2025, respectively. To obtain samples, please contact a sales representative or visit the contact page on ROHM’s website. Going forward, we will continue to develop laser light source technology for in-vehicle monitoring and other systems.　　TerminologyVCSEL　　Short for Vertical Cavity Surface Emitting Laser. Although conventionally used for communication, it is increasingly being adopted in recent years as a light source for the optical block in sensing systems.　　DMS　　Stands for Driver Monitoring System. A safe driving assistance function that detects whether the driver can continue safe driving based on facial and eye movements and provides alerts via sounds and/or text to prevent accidents before they occur.　　IMS(ICMS)　　Abbreviation for In-Cabin Monitoring System. This system expands the detection range to include front and rear passenger seats, occupant recognition, and biometric sensing to improve safety and comfort.　　Red Glow　　When high power infrared LEDs are used in sensors and other devices, there is a possibility that wavelengths close to those of visible light will be emitted that can be detected by the human eye. In this case, the sensor appears slightly red, hence the term “red glow”.
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Release time：2024-06-27 13:42 reading：554 Continue reading>>
Nidec Machine Tool Launches Newly Developed, Compact & Powerful Universal Head - A Light, Thin, Short and Small Product Capable of Meeting Various Machining Needs
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Nidec Machine Tool Launches Newly Developed, Compact & Powerful Universal Head - A Light, Thin, Short and Small Product Capable of Meeting Various Machining Needs

　　- A Universal Head that is approximately 80% in size of conventional products but that still possesses industry-leading high-speed machining　　- A Universal Head contributes to automated machining system and saves manpower of cast heavy duty cutting to high-precision mold finishing　　Nidec Machine Tool Corporation (represented by Mr. Haruhiko Niitani, president, and headquartered in Ritto, Shiga Prefecture) (“Nidec Machine Tool” or the “Company”), a Nidec Group company, today announced the launch of a new universal head (UH), an attachment of the Company’s MVR series of double column type milling machine with five-face machining capability The UH boasted an industry-leading compactness, by making the size approximately 80%*1of the conventional products, while maintaining the spindle capability with high output and speed.　　This small UH enables a better accessibility between the tool-and the workpiece, as well as finished-surface quality and high-efficiency machining under ideal machining conditions, and its “light, thin, short, and small” features contribute greatly to mold and other products’ manufacturing processes. This UH’s sale is going to start at the Company’s “Large Machine Preview Show” to be held in Ritto, Shiga Prefecture, on Friday, February 02.　　While made compact to improve its tool-workpiece accessibility and motion range, this new UH has an inclined axis with an extended tool-holding projection, enabling a better accessibility with a workpiece and the use of short and small tools. Additionally, even in machining processes that require long tools, this UH’s stiffer main spindle makes possible a variety of machining, from rough to finish machining. Also, with the UH able to approach up to 220mm (8.6”) to the wall, thanks to an improved swing span and interference range, the interference area with a workpiece has become smaller, and it can perform the precision machining on small and thin works and deep corners.　　To secure better efficiency, this UH has a spindle speed of 20-6,000min-1, a spindle motor output of 15kW/420min-1, and a spindle maximum torque of 341N·m, while enjoying shorter non-machining time based on faster indexing time of each axis, shorter machining time due to stiffer attachments, and other features to improve productivity. Furthermore, the UH, which can perform indexing per angular 1 degree even during high output, has a high degree of freedom in machining, and can capable of handling a wide range of works, from cast heavy duty cutting to high-precision mold finish machining.　　This UH can be installed into the Company’s double column type milling machining with five-face machining capability, i.e., MVR·Ax and MVR·Hx. The machines already delivered to the customers are also capable to install the attachment with additional construction.　　Nidec Machine Tool Corporation stays committed to making proposals to contribute to addressing manufacturing automation, manpower saving, and other issues in the fields of machinery business and total solutions including attachments and peripheral devices.
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Release time：2024-05-14 11:26 reading：1188 Continue reading>>
ROHM’s Compact SOT-223-3 600V MOSFETs Contribute to Smaller, Lower Profile Designs for Lighting Power Supplies, Pumps, and Motors
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ROHM’s Compact SOT-223-3 600V MOSFETs Contribute to Smaller, Lower Profile Designs for Lighting Power Supplies, Pumps, and Motors

　　ROHM has added a lineup of compact 600V Super Junction MOSFETs - the R6004END4 / R6003KND4 / R6006KND4 / R6002JND4 / R6003JND4. These devices are ideal for small lighting power supplies, pumps, and motors.　　In recent years, power supplies for lighting and motors for pumps are required to be smaller as devices become more sophisticated - spurring the demand for compact MOSFETs that are essential for switching operation.　　Generally, however, it has been difficult to reduce the size of Super Junction MOSFETs while maintaining an optimal balance between high breakdown voltage and low ON resistance. In response, after reviewing the shape of the mounted chip, ROHM was able to develop 5 models in the SOT-223-3 package (6.50mm × 7.00mm × 1.66mm) - providing a smaller, lower profile form factor without compromising the performance of conventional products.　　Compared to the conventional TO-252 package (6.60mm × 10.00mm × 2.30mm), ROHM’s new products reduce area and thickness by 31% and 27% - contributing to smaller, lower profile applications. At the same time, the same land pattern (footprint) as the TO-252 package can be used, enabling mounting on existing circuit boards without modification.　　Offering distinctive features, three of the models optimized for compact power supplies. The R6004END4, characterized by low noise, is suitable for applications where noise is a concern, while the R6003KND4 and R6006KND4, capable of high-speed switching, are ideal for sets requiring low loss, high efficiency operation. The R6002JND4 and R6003JND4 utilize proprietary PrestoMOS technology to achieve significantly lower switching losses by speeding up reverse recovery time (trr), making them well-suited for motors-equipped devices.　　Supporting materials such as application notes, technical documents, and SPICE simulation models for each product are available on ROHM’s website free of charge to enable quick market introduction.　　Going forward, ROHM will continue to expand its Super Junction MOSFET lineup in different packages and even lower ON resistances that contribute to solving social issues such as environmental protection by reducing power consumption in variety devices.　　Product Lineup　　For compact power supplies　　Application Examples        • R6004END4 / R6003KND4 / R6006KND4: Lighting, Air conditioners, Refrigerators, etc.　　• R6002JND4 / R6003JND4: Motors for pumps, fans, copiers, etc.　　Online Sales InformationSales Launch Date: December 2023　　Pricing: $3.0/unit (samples, excluding tax)　　Online Distributors: DigiKey, Mouser, and Farnell　　The products will be offered at other online distributors as they become available.　　Online Distributors　　For More Information about ROHM’s Super Junction MOSFETVarious resources are available on ROHM's website, including application notes on the SOT-223-3 package and other documents essential for circuit design.　　https://www.rohm.com/support/super-junction-mosfet　　PrestoMOS“Presto” is an Italian musical term meaning “very fast.”　　PrestoMOS is ROHM’s original power MOSFET that maintains the high withstand voltage and low ON resistance of Super Junction MOSFETs while speeding up the reverse recovery time of the built-in diode. Reducing switching losses makes it ideal for a wider range of applications with inverter circuits, such as air conditioners and refrigerators.　　TerminologySuper Junction MOSFET (Metal Oxide Semiconductor Field Effect Transistor)　　A type of transistor, MOSFETs can be divided by device structure into DMOSFET (Double-diffused MOSFET), planar, and super junction topologies. Super Junction MOSFETs deliver superior breakdown voltage and output current than both DMOSFETs and planar types, featuring lower loss when handling large power.　　trr (Reverse Recovery Time)　　The time it takes for the built-in diode to switch from the ON state to completely OFF. The lower this value is, the smaller the loss during switching.
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Release time：2024-01-24 13:40 reading：2088 Continue reading>>
What is a <span style='color:red'>light</span> emitting diode? What are the types of <span style='color:red'>light</span> emitting diode?
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What is a light emitting diode? What are the types of light emitting diode?

　　Light-Emitting Diodes (LEDs) are semiconductor devices that produce light when electricity passes through them. They operate on electroluminescence, emitting efficient, durable, and long-lasting illumination.　　Known for their energy efficiency and small size, LEDs find widespread use in lighting, displays, and indicators across industries. Their diverse color range, durability, and environmental friendliness make them pivotal in modern lighting solutions, from household lighting to advanced technological applications.　　LEDs continue to drive innovation in illumination, offering versatility, longevity, and reduced energy consumption, reshaping how we light our world. In this article, we will introduce about Light-Emitting Diodes.　　What is a light emitting diode?A light-emitting diode (LED) is a semiconductor device that emits light when an electric current passes through it. It works on the principle of electroluminescence, where the movement of electrons within the semiconductor material releases energy in the form of photons (light).　　What are the types of light emitting diode?Light-emitting diodes (LEDs) come in various types, each designed for specific applications or to offer different functionalities. Here are some common types of LEDs:　　Through-Hole LEDs: These are traditional LEDs with two wire leads, often used for indicator lights on electronic devices. They can emit different colors such as red, green, blue, yellow, and others.　　Surface-Mount LEDs (SMD LEDs): These LEDs are smaller and more suitable for automated assembly processes. They come in various sizes, from standard packages like 1206, 0805, 0603 to smaller miniaturized versions.　　High-Power LEDs: These LEDs produce higher levels of light output and are used in applications requiring intense illumination, such as outdoor lighting, spotlights, automotive lighting, and industrial lighting.　　RGB LEDs: These contain red, green, and blue elements within the same package, allowing them to emit a wide range of colors. By adjusting the intensity of each color, they can produce a spectrum of hues.　　UV (Ultraviolet) LEDs: Emitting ultraviolet light, these LEDs find applications in sterilization, forensic analysis, curing, and medical devices.　　IR (Infrared) LEDs: Emitting infrared light, these LEDs are used in applications like remote controls, sensors, night vision devices, and communication systems.　　OLEDs (Organic Light-Emitting Diodes): Unlike traditional LEDs, OLEDs use organic compounds to emit light. They’re used in displays, TVs, smartphones, and lighting panels.　　Miniature LEDs: These are extremely small LEDs often used in applications like indicator lights on circuit boards, small-scale lighting, and wearable technology.　　COB LEDs (Chip-on-Board LEDs): These are multiple LED chips bonded directly to a substrate to form a single module. They offer higher light density and improved thermal management, commonly used in lighting applications.　　Smart LEDs: These are programmable LEDs that can change colors, brightness, and effects through control systems. They are used in decorative lighting, stage lighting, and smart home applications.Each type of LED has its own characteristics, advantages, and limitations, making them suitable for various applications across industries. The choice of LED type depends on factors such as brightness requirements, color range, energy efficiency, size constraints, and specific application needs.　　What are the characteristics of LEDs?1. Energy Efficiency: LEDs are highly energy-efficient, converting a higher percentage of electricity into light compared to traditional lighting sources like incandescent bulbs.　　2. Longevity: They have a long lifespan, typically lasting tens of thousands of hours, contributing to reduced maintenance and replacement costs.　　3. Durability: LEDs are solid-state devices, resistant to shock, vibration, and frequent switching. This durability makes them suitable for various applications.　　4. Small Size: LEDs are compact and come in various sizes and shapes, enabling their use in diverse applications, from indicator lights to large-scale lighting fixtures.　　What are the applications of light-emitting diode?　　Light-emitting diodes (LEDs) have found widespread applications across various industries due to their numerous advantages, such as energy efficiency, durability, long lifespan, and versatility in emitting different colors. Some key applications of LEDs include:　　● Lighting:　　• General Illumination: Used in homes, offices, and public spaces for energy-efficient lighting solutions.　　• Street Lighting: LEDs are used in streetlights due to their longevity and energy efficiency, reducing maintenance costs.　　• Automotive Lighting: Found in headlights, taillights, brake lights, interior lighting, and indicators in vehicles.　　• Architectural Lighting: Used for accent lighting, highlighting architectural features, and creating specific atmospheres in buildings.　　● Display and Signage:　　• Electronic Displays: LED screens in TVs, computer monitors, and large-scale displays due to their high brightness and color accuracy.　　• Outdoor Displays: Used in billboards, scoreboards, and outdoor signage due to their visibility in various lighting conditions.　　• Indicators: Small LEDs serve as indicator lights in devices, appliances, control panels, and electronic systems.　　● Decorative and Entertainment:　　• Decorative Lighting: LEDs are used for decorative purposes, such as in holiday lights, interior decor, and artistic installations.　　• Stage Lighting: LEDs provide colorful and dynamic lighting effects in theaters, concerts, and events.　　• Lighting Effects: Used in clubs, parties, and entertainment venues for dynamic lighting effects.　　● Specialty and Scientific Applications:　　• UV (Ultraviolet) LEDs: Used in sterilization, curing, forensic analysis, and medical devices.　　• IR (Infrared) LEDs: Employed in remote controls, sensors, night vision devices, and communication systems.　　• Plant Growth Lighting: Specific LED wavelengths aid in indoor plant growth for horticulture.　　● Emerging Applications:　　• Smart Lighting: Connected LED systems that can be controlled and programmed for various effects, integrated with smart home systems.　　• Wearable Technology: LEDs integrated into clothing, accessories, and wearable devices for visual enhancements or notifications.The versatility of LEDs and ongoing advancements in LED technology continue to expand their applications into new areas, making them increasingly prevalent across various industries.　　What is the difference between light emitting diode and Zener diode?　　The primary difference between a light-emitting diode (LED) and a Zener diode lies in their fundamental functions and operating principles:　　Light-Emitting Diode (LED):　　Function: Converts electrical energy into light energy when forward biased.　　Operation: When a forward voltage is applied across the LED, it allows current to flow, causing electrons to recombine with electron holes in the semiconductor material, emitting photons (light) in the process.　　Usage: Typically used for illumination, indicators, displays, and lighting purposes.　　Polarity: An LED is polarized and operates only in the forward direction.　　Zener Diode:　　Function: Allows current to flow in reverse bias at a specified voltage, providing a stable reference voltage for voltage regulation.　　Operation: In reverse bias, when the voltage across the Zener diode reaches its breakdown voltage (Zener voltage), it conducts current in the reverse direction, maintaining a nearly constant voltage across it.　　Usage: Primarily used for voltage regulation, protection against voltage spikes, and as a voltage reference in circuits.　　Polarity: Zener diodes are bidirectional and conduct current in both forward and reverse directions, but they are primarily used in the reverse bias mode for their voltage regulation function.In summary, while both are semiconductor diodes, their functions, operating principles, and applications differ significantly. LEDs primarily emit light when forward biased, while Zener diodes are used for voltage regulation and operate in reverse bias by allowing controlled current flow above a specific breakdown voltage.　　What material is used in the light emitting diode?Light-emitting diodes (LEDs) are primarily made from semiconductor materials that emit light when an electric current passes through them. The choice of semiconductor materials is crucial in determining the color and efficiency of the emitted light. Some of the common semiconductor materials used in LEDs include:　　Gallium Arsenide (GaAs): Used primarily for red and infrared LEDs.　　Gallium Phosphide (GaP): Used for green and yellow LEDs.　　Gallium Nitride (GaN): Used for blue, green, and white LEDs. GaN-based LEDs have enabled the production of blue LEDs, which, when combined with phosphors, produce white light.　　Indium Gallium Nitride (InGaN): Widely used for blue, green, and white LEDs. The addition of indium to gallium nitride allows for tuning the wavelength of emitted light, enabling the production of different colors.The combination of these semiconductor materials, along with doping techniques and different structures, determines the characteristics of LEDs, including their color, brightness, efficiency, and operating properties. Depending on the desired wavelength and performance, manufacturers select specific semiconductor materials and employ precise fabrication processes to create LEDs for various applications.
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Release time：2023-11-30 10:37 reading：2577 Continue reading>>
What are the advantages and disadvantages of <span style='color:red'>light</span>-dependent resistors
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What are the advantages and disadvantages of light-dependent resistors

　　What is LDRLight Dependent Resistor (LDR) is a type of sensor used to detect the intensity of light. It is also known as a photoresistor or photocell. It is a passive electronic component, which means that it doesn’t require any power source to operate. Instead, it works by changing its resistance based on the intensity of light that falls on it.　　It is a device that changes its resistance based on the amount of light it receives. It is usually made up of two metals or semiconductors, one for the anode and one for the cathode. When no light falls on an LDR, its resistance will be low, and vice versa when there is plenty of light coming down onto it. The change in electrical current between these two metals causes them to repel each other; therefore, if you place your finger over one side’s terminal while holding another wire with its terminal connected to the ground via some sort of switch or button, then all you’ll feel is static electricity!　　How many types of LDR are there　　There are two types of LDRs – intrinsic and extrinsic.　　◎ Intrinsic LDRs are made of semiconductor materials that exhibit photoconductivity naturally, such as cadmium sulfide (CdS) or lead sulfide (PbS).　　◎ Extrinsic LDRs are made by doping a semiconductor material with impurities, such as arsenic, to enhance its photoconductivity.　　What are the advantages and disadvantages of light-dependent resistorsA light-dependent resistor is a device that changes its resistance depending on the amount of light hitting it. LDRs are used in a variety of applications and have many advantages over other types of resistors.　　The advantages of LDR include its low cost, simplicity of use, and low power consumption. LDRs are also sensitive to a wide range of light frequencies, making them useful in many applications.　　However, LDRs have some disadvantages. They are slow to respond to changes in light intensity and can be affected by temperature changes. Additionally, their resistance can vary significantly between individual components, making it difficult to achieve consistent performance.　　What does a Light Dependent Resistor doA light-dependent resistor (LDR) is a resistance that changes its resistance based on the amount of light that falls on it. It is used in various applications like photodiodes, photocells, light sensors, etc. It is also used in photovoltaic applications to convert solar energy into electricity using photocurrent generation.　　Where is LDR used　　LDR is used in a lot of applications. It is used to measure the intensity of light, detect the presence of light, and detect its intensity in a sensor.　　LDRs are used in a wide range of applications, including streetlights, security systems, cameras, and light meters. In streetlights, they are used to turn on the lights when it gets dark and turn them off when it gets light. In security systems, they are used to detect the presence of intruders by sensing changes in light intensity. Cameras use LDRs to control the exposure settings, while light meters use LDRs to measure the intensity of light in a scene.　　How do you use LDR in a circuitLDRs can be used in a variety of PCBs , such as voltage dividers, oscillators, and timers. A voltage divider circuit consists of an LDR and a fixed resistor connected in series. The output voltage of the circuit varies based on the resistance of the LDR, which changes with the intensity of light. Oscillator and timer circuits use LDRs to control the frequency or duration of a signal based on the light intensity.　　What is the difference between LDR and a photoresistorA light-dependent resistor (LDR) is a special kind of resistor that works based on the amount of light it receives. It has two terminals one terminal goes to the ground, while the other terminal goes to the power. If no voltage is applied, it will be in its lowest resistance state and if you apply a high enough voltage through this pin, it will become active and start flowing electricity through its internal wiring.　　LDRs and photo resistors are two different types of sensors used to detect light. LDRs are made of semiconductor materials and change their resistance based on the intensity of light.　　Photo resistors, on the other hand, are made of a thin film of a material that changes its conductivity based on the intensity of light. While both sensors can detect light, LDRs are more sensitive and provide a wider range of detection.　　What is the construction of an LDRThe device consists of a semiconductor material and an electrode, which can be biased by applying a small electric current through them. When exposed to light, electrons are knocked out of their orbitals around the atoms in this material.　　An LDR is typically constructed using a semiconductor material, such as CdS or PbS. The material is sandwiched between two metal electrodes, which form the terminals of the component. The surface of the semiconductor is often treated with a protective layer to prevent damage from dust or moisture.　　What material is used in LDR　　In LDR, the active material is made of semiconductors. The p-n junction is a key component of this application. A p-n junction has two regions with different electrical conductivities: one region where electrons flow easily and another region where they don’t move so well.　　To make an LDR (or any transistor), you need these Materials.　　◎ The most common material used in light-dependent resistors (LDRs) is cadmium sulphide, CdS. This material has a high resistance to light and even higher heat resistance. The resistance of CdS is dependent on the intensity and wavelength of light that it encounters.　　◎ Lead sulphide, PbS is another commonly used material for LDRs. Lead sulphides are semiconductors that have a low band gap and are therefore sensitive to visible light. Lead sulphide has a higher resistance than cadmium sulphides because it does not absorb as much light at longer wavelengths (which is why you can see through it).　　◎ Indium antimonide, InSb, is another material commonly used in LDRs due to its high conductivity for visible light and heat.　　What is the resistance of an LDR　　An LDR is a light-dependent resistor (LDR) that changes its resistance according to the amount of light falling on it. This can be used to control electrical devices such as LEDs, fluorescent lamps, and laser pointers.　　The resistance of an LDR is measured in milliohms (1MΩ) or microohms (µΩ), depending on whether you’re measuring with a high-voltage probe or low-voltage one respectively. The reason for this relates to how electrons behave when they move through materials: they prefer moving from the left side to the right side rather than vice versa due to their charge polarity.
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Release time：2023-11-28 10:55 reading：2385 Continue reading>>
​ROHM New Matrix-Type LED Drivers for Automotive LCD Back<span style='color:red'>light</span>s Enable Independent Control of up to 192 Zones
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​ROHM New Matrix-Type LED Drivers for Automotive LCD Backlights Enable Independent Control of up to 192 Zones

　　ROHM has developed LED driver ICs - the BD94130xxx-M series (BD94130MUF-ME2, BD94130EFV-ME2) - for automotive LCD backlights. The devices support large displays increasingly being used in next-generation car infotainment and instrument clusters.　　In recent years, the advancement of ADAS (Advanced Driver Assistance Systems) together with expanding car infotainment functionality have prompted a shift towards higher resolution vehicle displays to improve visibility. As such, LED drivers with a local dimming function capable of turning off only the backlight in dark areas of the LCD improve display screen performance and reduce power consumption. They are now being considered by automotive manufacturers developing next-generation cockpits. But as the number of zones controlled with conventional direct-type LED drivers by a single IC is less than 100, the number of LED drivers and peripheral components will also increase as automotive displays become larger with more zones. This represents a significant design challenge.　　To meet this need, ROHM developed products capable of controlling more zones than conventional ICs -making it possible to reduce the mounting area by reducing the number of LED drivers required. The BD94130xxx-M series of matrix LED drivers combines an 8-line switch controller with 24-channel current driver - allowing control (dimming) of up to 192 zones mini-LED for backlighting with a single IC. On top of that, the mini-LEDs in each zone can be independently adjusted by using a local dimming function - contributing to larger contrast ratio, lower power consumption displays.　　For example, with current mainstream 10-inch class infotainment displays that consist of approx. 600 zones, ROHM’s new products enable operation with just one-fourth of the number of LED drivers compared to existing (48-zone) products - decreasing LED driver mounting area by approx. 84%. And this advantage will only increase as screens become larger and the number of zones rises inside next-generation cockpits.　　New Products: BD94130xxx-MROHM’s BD94130xxx-M series of matrix LED drivers combines a 24-channel current driver with a switch controller that can be divided into 8 lines (Max.). The number of switch controller lines can be selected from among 3 patterns (4, 6, or 8) - via register settings, supporting a variety of specifications based on the number of zones and LED current consumption. In addition, a built-in feedback control function maintains a constant feedback voltage independent of LED temperature characteristics - reducing thermal design man-hours along with loss ratio.　　ApplicationsROHM’s new products are equipped with local dimming functionality to support a variety of high-contrast automotive displays.　　• Electronic mirrors (side/rear view)　　• Instrument clusters• Car infotainment　　• Head-up displays (HUDs)
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Release time：2023-08-28 15:14 reading：2362 Continue reading>>
Gartner High<span style='color:red'>light</span>s Top Trends Impacting Technology Providers Through 2025
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Gartner Highlights Top Trends Impacting Technology Providers Through 2025

　　Gartner Inc. highlighted the top trends that will impact technology providers through 2025. These trends reflect three overarching themes: businesses increasing their reliance on technology, new opportunities emerging through technology and the impact of external macro forces.　　“The march of digitalization continues even amidst disruption, and technology providers have a leading role to play,” said Rajesh Kandaswamy, Distinguished VP Analyst and Gartner Fellow. “In 2023, product leaders and technology executives must balance short-term planning with long-term strategy to stay ahead of the immediate shocks to the economy and the underlying ‘permacrisis’ forces shaping business.”　　Here are the trends Gartner identified that will impact technology customers, buyers, products, ecosystems, business models and operating models worldwide for at least the next three years:　　Democratization of technology　　The democratization of technology empowers non-IT workers to seek out, select, implement and custom fit their own technology. This trend offers opportunities to meet the needs of a new set of citizen developers and business technologists. Gartner predicts that by 2025, 55% of all successful emerging technology solutions will be delivered to “nontraditional” buyers – for example, outside IT – within enterprises, enabling vendors to expand into new markets and forge new customer relationships.　　Federated enterprise technology buying　　In a federated buying process, buying decisions are made by representatives across the business. Driven by the democratization of technology, federated enterprise technology buying is accelerating, with just 26% of technology buyers in a recent Gartner survey reporting that purchases are funded solely by IT.　　“Federated buying creates opportunities for product leaders as it enables a focus on more value-added services for business customers,” said Emil Berthelsen, VP Analyst at Gartner. “However, it also adds complexity, forcing changes to go-to-market models and demanding a greater focus on value scenarios and outcomes.”　　Product-led growth　　Product-led growth (PLG) is a go-to-market strategy in which users experience value through free product offers or interactive or automated demonstrations. Then, users are either converted directly to paid accounts or their advocacy and influence helps to drive purchases. By 2025, 95% of software-as-a-service (SaaS) providers will employ a form of self-service PLG for new customer acquisition.　　“PLG is hitting its stride in B2B after much acclaim in the B2C technology world,” said Kandaswamy. “It can reduce cost to acquire customers and shorter sales cycles relative to traditional buyer-oriented, top-down marketing and sales strategies.”　　Co-innovation ecosystems　　The co-innovation ecosystem approach is an emerging practice that enables the convergence of internal, external, collaborative and co-creative ideas to create new value. Businesses are actively using technology to differentiate and succeed, so they are increasingly co-innovating with tech providers.　　“With a co-innovation partner ecosystem, technology providers can meet pressing customer needs through use of shared skills, technology expertise, investment and incentives,” said Kandaswamy.　　Digital marketplaces　　Technology buyers are embracing digital marketplaces to easily find, procure, implement and integrate technology solutions. Non-tech buyers are also increasingly looking to marketplaces to meet their requirements for composable and easily consumable technology solutions.　　“Technology and service providers are increasing their investment in marketplace channels as they seek growth opportunities and competitive advantage,” said Kandaswamy. “A digital marketplace accelerates time to market, extends outreach to target segments, expands partner ecosystems and speeds up the sales cycle.”　　Intelligent applications　　Intelligent applications will create value and disrupt markets by learning, adapting and generating new ideas and outcomes. For example, generative artificial intelligence (AI) is an emerging technology quickly gaining traction for commercial use within intelligent applications. Generative AI can produce novel media content (including text, image, video and audio), synthetic data and models of physical objects.　　“Product leaders should expect generative AI features that empower workforces with augmented and creative capabilities to be a new competitive front in intelligent applications,” said Kandaswamy.　　Metaverse technologies for marketing and customer experience (CX)　　Metaverse technologies are rapidly gaining traction in marketing for creating unique experiences, impactful interactions and novel engagement. By 2027, over 40% of large organizations worldwide will be using a combination of Web3, spatial computing and digital twins in metaverse-based projects aimed at increasing revenue.　　“B2B marketers have an opportunity to apply metaverse technologies and the immersive experiences they provide to expand customer reach and engagement and improve CX,” said Kandaswamy. “Early adopters are using metaverse technologies to host events in virtual spaces, conduct internal and external sales meetings, showcase products and more.”　　Sustainable business　　“Sustainable business has transformed into a ‘must have’ rather than a ‘nice to have,’” said Kandaswamy. “In an increasingly technology-driven world, sustainable business is underpinned by sustainable technology.”　　Technology providers must improve the sustainability of their products that enable sustainable business outcomes. A recent Gartner survey found that 42% of leaders are currently leveraging sustainability activities to drive innovation, differentiation and enterprise growth through sustainable products. Gartner predicts that by 2025, tech providers that can quantify their offering’s positive contribution to customers’ sustainability objectives will increase their win rate by 20%.　　Techno-nationalism　　A trend away from globalization and into mercantilism is causing global markets to become increasingly local, impacting global technology ecosystems. Policy decisions are driving countries to implement of digital sovereignty regulations, causing a divergence of technology stacks. In response to this trend, product leaders must balance meeting specific country-level localization needs and product profitability.
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Release time：2023-02-08 14:47 reading：1812 Continue reading>>
Macroblock Puts Spot<span style='color:red'>light</span> on LED Driver ICs at CES 2023
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Macroblock Puts Spotlight on LED Driver ICs at CES 2023

　　Macroblock, which is actively developing in new fields, has recently begun to harvest in the automotive market, and major international manufacturers have successively adopted Macroblock’s LED automotive driver ICs. In order to enhance brand visibility, Macroblock participated at the recent Consumer Electronics Show (CES) 2023 held in Las Vegas, USA, for the first time. The exhibits included LED headlights, LED rear lights, and FALD (Full Array Local Dimming) LED backlight modules of in-vehicle display.　　Headlights: Adaptive Driving Beam (ADB)　　At present, high-end car manufacturers have launched car models with adaptive driving beam by arranging multiple LEDs into matrix-shaped headlights. Each LED can be lit individually. With lens modules, comprehensive consideration of environmental information, geographical location and even driving speed, the angle of high beam or low beam is changed accordingly to improve driving safety. The more LEDs, the more flexibility to adjust illumination zones. The adaptive capabilities improve visibility to reveal critical objects such as pedestrians, oncoming vehicles, and traffic signs while avoiding dazzling other drivers.　　Macroblock demonstrates the ADB system by using 100 LEDs and LED driver ICs MBI6353Q. Features of the driver IC are: 1) Flexible current design 2) 4,096 steps of brightness adjustment to fit ambient light change 3) Meet automotive safety integrity level ASIL B.　　Rear Light: Full-width Rear light　　In recent years, automakers have successively introduced LEDs into the application of rear lights. What they are looking for is high-tech and exquisite outline that LEDs bring. Auto manufacturers design rear lights or the third central brake lights in a strip or narrow shape, forming a full-width rear light. The visual extension is achieved by increasing the illuminated area, and cars are easier to identify when lit up at night. A higher-end design is capable of independent control of LEDs, and welcome light effect of rear light can be programmed variously.　　The exhibit is built in LED driver IC MBI5353Q that meets the automotive safety integrity level ASIL A, and the pitch of the module is 0.9375mm. The feature of independent control of LEDs are used for a rear trunk LED multi-function stripe to create more lighting effects and present a variety of appearance designs.　　FALD (Full Array Local Dimming) LED Backlight Modules of In-vehicle Display　　Two FALD LED Backlight modules were exhibited in the booth, including: 1) The backlight module for a mini-LED interactive safe driving display, which has been adopted in mass-produced cars. The display is embedded on the steering wheel to provide the driver with driving information. The backlight module is built in Macroblock LED driver IC MBI5353Q that meets the automotive safety integrity level ASIL A, providing 16-bit grayscale, and only one driver IC can control local dimming zones up to 1,536, which not only brings fine images to a small-sized display, but also due to the high-brightness feature of LEDs make it possible to watch displays in bright sunlight without disturbance. 2) The curved local dimming backlight module is built in LED driver IC MBI6353Q, and its hybrid dimming technology can generate excellent low-grayscale images, and the environmental information can still be clearly captured even in dim light. In addition, Macroblock’s LED backlight driver ICs can provide automakers with flexible function design options for expanding application functions or simplifying circuit design.　　Macroblock which is gradually blooming in the automotive field, is based on the entrepreneurial spirit of constantly exploring the market. Expanding into the automotive market, Macroblock has accumulated a solid foundation in its automotive LED driver ICs certified by ACE-Q100 and ASIL A/B, and will continue to develop advanced products to tap into new opportunities in the future.
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Release time：2023-01-11 13:52 reading：3370 Continue reading>>
STMicroelectronics and eYs3D Microelectronics to High<span style='color:red'>light</span> 3D Stereo-vision Camera at CES 2023
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STMicroelectronics and eYs3D Microelectronics to Highlight 3D Stereo-vision Camera at CES 2023

　　STMicroelectronics and eYs3D Microelectronics will showcase the results of their collaboration on high-quality machine vision at CES 2023 in Las Vegas on January 5-8. Using live demonstrations, the companies will highlight how stereo video and depth camera made from advanced active-coded infrared technology can enhance capabilities like feature recognition and autonomous guidance at mid-to-long working range.　　“STMicroelectronics’ advanced image sensors, using proprietary process technologies, offer class-leading pixel size while offering both high sensitivity and low crosstalk,” said James Wang, Chief Strategy & Sales Officer, eYs3D Microelectronics. “Such high-performance image sensors at a competitive price point enable us to achieve extremely compact system size while ensuring outstanding machine-vision performance. The strong connection we have established with ST increases our confidence to develop new products that will lead the machine vision market.”　　“The collaboration with eYs3D Microelectronics, through their expertise in capture, perception understanding, and 3D-fusion, offers ST additional business opportunities, use cases, and ecosystems addressing demands for stereo vision in applications such as robots, home-automation, home appliances, and many others,” said David Maucotel, Business Line Manager at ST’s Imaging Sub-Group. “While the reference designs showcased at CES are using monochromatic sensors, we can already foresee exciting enhancements and further use-cases using the RGB and RGB-IR versions of our sensors.”　　The CES demonstrations highlight two jointly developed reference designs, the Ref-B6 and Ref-B3 ASV (Active Stereo Vision) video and depth cameras. Both combine the eYs3D CV processor and eSP876 stereo 3D Depth-Map chipset with ST’s global shutter image sensors that provide enhanced near-infrared (NIR) sensitivity. The embedded eYs3D chipset enhances object edge detection, optimizes depth de-noising, and outputs HD-quality 3D depth data up to 60 fps frame rate. ST’s image sensors enable the cameras to output data streams in various combinations of video/depth resolution and frame rate for the best quality depth sensing and point-cloud creation.　　In addition, optimized lenses, filters and a VCSEL active-IR projector source optimize the infrared optical path and maximize immunity to ambient light noise. A specially developed control algorithm turns the IR projector on and o? alternately to permit capturing artifact-free gray scale images. Leveraging this advanced hardware design, the Ref-B6 stereo-video camera achieves a 6-centimeter baseline and 85deg(H) x 70deg(V) depth field of view.
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Release time：2023-01-05 13:02 reading：3419 Continue reading>>

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