Technical Articles
ROHM Semiconductor USA, LLC has published these technical articles:
(Transistors)
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Thanks to SiC's breakdown field strength that is ten times higher than that of silicon, SiC devices can be constructed to withstand the same breakdown with a much smaller drift region. In theory, SiC...
(Diodes)
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are Schottky barrier diodes. Not only do SBDs have the lowest reverse recovery time (trr) compared to the various types of fast recovery (fast recovery epitaxial), ultrafast recovery and super-fast...
(Proximity or Presence Sensing)
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Infrared (IR) technology addresses a broad variety of wireless applications, especially in the areas of sensing and remote control. Today's newest products such as cell phones, digital cameras, and...
(Power and Power Management IC)
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The usage of lighting-emitting diodes (LEDs) in auto?motive applications is increasing for many of the same reasons that LED lighting is penetrating non-automotive sectors. LEDs are more efficient and...
(Motor Controls and Drives)
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By rotating in discrete angular increments, stepping, stepper or simply step motors provide a more precise solution for many motion control and measurement applications, especially when the...
(Power and Power Management IC)
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ROHM CMOS LDO (low drop-out) regulators are tailored for use in portable devices such as PDAs, mobile phones, digital cameras and camcorders. Lower in cost and small in packaging, ROHM CMOS LDOs offer...
(Sensor Chips)
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Being able to determine a device's position and movement is becoming a standard feature in many portable systems. Systems such as cell phones and tablets use the 6-axis data from accelerometers and...
(Power Supply and Conditioning)
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DC brush motors are increasingly required for a broad range of applications including robotics, portable electronics, sporting equipment, appliances, medical devices, automotive applications, power...
(Optoelectronics)
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In portable electronic products, reducing the power consumption to provide the user with increased battery life is one of today's critical design considerations. The liquid crystal display (LCD) and...
(Semiconductors)
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Efficiency ratings for power supplies at full load do not adequately reflect the unit's power consumption under actual operating conditions. To extend the length of operation of portable products on a...
(Semiconductors)
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According to the Semiconductor Industry Association, consumer electronics became the largest user and primary driver of semiconductors in 2004 and continues to increase over the corporate market...
(Power Supplies)
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This article intends to describe the application of full SiC module in a 10 kW UPS inverter. 5-10kW is a widely used power rating for UPS and is also common for power modules. A module has been used...
(Sensor Chips)
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Sensors play a key role in enabling modern electronics to more intelligently act within their environment. A cell phone, for example, uses sensors to detect when a user is holding the device to his or...
(Transistors)
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The invention of the transistor that gave an unprecedented shock to the electronics industry at that time was made in the year 1948. That truly was the beginning of the current age of electronics....
(Power and Power Management IC)
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Voltage and ferroelectric characteristics are important factors in determining the performance of piezoelectric MEMS. ROHM is focusing on developing a thinner lead zirconate titanate (PZT) material...
(Logic)
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Using Low Cost Microcontrollers for Temperature, Carbon Monoxide, and Humidity Measurement, Display, and Control.
In today's energy consumption and safety-conscious world, collecting and using...
(IC Optoelectronics)
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Whether capturing still images or recording moving video, image stabilization will always be a major factor in reproducing a near perfect digital replica. A lack thereof will result in image...
(Transistors)
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This is the classification based on the differences in the operating features. The classification is made as bipolar transistors and unipolar transistors....
(Resistors and Potentiometers)
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Some common questions about resistors....
(Power and Power Management IC)
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Efficient power management is an important design element enabling systems developers to overcome increasing demands for compact size, low-power operation and improved functionality. In addition, many...
(Transistors)
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The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM's integrated circuit are described in this application note....
(Transistors)
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In an NPN transistor, the Base is at positive bias, the Collector at negative bias, and reverse current flows from the Emitter to the Collector. Also, please consider problems arising from usage....
(Sensing and Measurement Instruments)
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Monitor your heart with low power...
(Specialized Industrial Products)
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Foundations of Electronic Circuit Simulation. In this article, we give a brief explanation of a Thermal Dynamic Model, which is another SPICE model used in thermal simulations....
(Specialized Industrial Products)
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Foundations of Electronic Circuit Simulation...
(Automotive Equipment and Products)
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Automotive technology is undergoing a major transformation. A greater number of electronic components is needed to support the advancement of sensing and safety functions required for autonomous...
(Business and Professional Services)
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Delphine Biscaye - a woman in motor sports There are very few women in tech, but there is another area with even fewer women: motor sports...
(Specialized Industrial Products)
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Design of a Secondary-Side Synchronous Rectifying Circuit to Improve the Efficiency of an AC/DC Converter...
(Switches)
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In this article, you will learn how to make Wi-Fi switch that you can use for your IoT project with MicroPython and ESP32....
(Light Sources)
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An introduction to PIR sensors...
(Temperature Sensing)
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The ability to EASILY sense ambient humidity in an arbitrary environment is highly prized because humidity affects the operation of innumerable human contraptions, not to mention human comfort....
(Semiconductors)
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Most health electronics you've heard of are good at tracking your fitness. You can track your step count with a pedometer. You can also get data on your heart rate. Some devices even give claim to...
(Batteries and Accessories)
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Securing Sufficient Equipment Operating Time While Allowing For Compact Batteries...
(Computer Peripherals)
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You can build drones, lights, and more with Raspberry Pi. However, this technology stands on the shoulders of computing giants. Let's take a closer look at how Raspberry Pi's capabilities compare to...
(Storage)
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this article isn't specifically about digitizing photos. It's all about storage: simple, FAST network storage....
(Power Supplies)
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Are you using smart home devices you own effectively? The answer is probably not. There's a whole world of fun and convenience available. Smart home devices like smart speakers can be used throughout...
(Specialized Industrial Products)
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We explain a type of MOSFET that ROHM has christened "Hybrid MOS", combining the advantages of both MOSFETs and IGBTs....
(Sensing and Measurement Instruments)
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In Japan, which has among the highest occurrence of earthquakes of any country per year, seismic detection is of critical importance...
(Transistors)
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Learning About Ohm's Law, GPIO and Transistors with Flashing LEDs on Raspberry Pi...
(Microprocessors and Microcontrollers)
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In today's energy consumption and the safety-conscious world, collecting and using accurate information about ambient temperature and humidity and the concentration of carbon monoxide (CO) is of...
(Transistors)
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When designing a circuit, thermal calculations are indispensable, and particularly where power devices that handle large amounts of power are concerned, they are extremely important, not only with...
(Light Sources)
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In the automotive market, vehicle lamps are increasingly adopting LEDs due to their longer life and high-density mounting. Conventional onboard LEDs support various designs and functions by combining...
(Power Supplies)
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Nano Cap™ power supply technology ensures stable control of power supply circuits in the automotive and industrial fields - even with ultra-small capacitances in the magnitude of nF (Nano:...
(Specialized Industrial Products)
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There is a difference between ADAS and autonomous driving. Here we will introduce automotive safety technology while touching upon the various definitions and terminologies....
(Semiconductors)
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Whereas in the preceding section we explained that the switching regulator is capable of performing buck (step down), boost (step up), buck/boost (step down and up), and inverting conversions, moving...
(Semiconductors)
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The purpose of this design is to use the BM1R001xxF series of secondary-side synchronous rectifying controller ICs to perform synchronous rectification in an AC/DC converter that uses diode...
(Automotive Equipment and Products)
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Automotive technology is undergoing a major transformation. A greater number of electronic components is needed to support the advancement of sensing and safety functions required for autonomous...
(Electronics and Microelectronics Manufacturing)
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This series will focus on learning the principles and basics of crafting electronic kits through simple crafts made with Raspberry Pi....
(Specialized Industrial Products)
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In this article we explain the bridge configuration that is assumed and its operation....
(Light Sources)
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As a part of its social contribution activities, ROHM has implemented large-scale lighting displays in the areas around its headquarters in Kyoto....
(Semiconductors)
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in this article an explanation is given of the current paths during synchronous rectifying step-down converter operation, which may be regarded as standard operation in the high-efficiency DC/DC...
(Power Supplies)
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As part of a procedure to convert the secondary-side diode rectification circuit of the original circuit to synchronous rectification, in the previous article we selected a MOSFET to replace the...
(Power Supplies)
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In succession to the preceding article, we explain the selection of peripheral circuit components for the BM1R00147F power supply IC that was previously selected. Here, we focus on C1 and R3 at the...
(Power Supplies)
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In the previous article, as the start of design of the synchronous rectification section, the power supply IC used in design was determined. In succession to this, the peripheral circuit components of...
(Semiconductors)
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Keeping in mind the "Example of Power Supply Specifications and Replacement Circuit" of the previous article, we begin actual circuit design...
(Electronics and Microelectronics Manufacturing)
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Want a new kind of home improvement project that leverages technology instead of nails and hammers? Here are eight smart home improvements that leverage your Raspberry Pi and Arduino skills....
(Specialized Industrial Products)
From this Article:
Design of a Secondary-Side Synchronous Rectifying Circuit to Improve the Efficiency of an AC/DC Converter...
(Circuit Protection Devices)
From this Article:
When a surge occurs, the VDS2 of the secondary-side MOSFET may rise to or exceed the rated VDS of the MOSFET as a result. This means that a voltage that exceeds the MOSFET rating is applied, and so...
(Power Supplies)
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ROHM, in collaboration with a research group headed by Associate Professor Hiroshi Fujimoto of the Graduate School of Frontier Sciences at the University of Tokyo (hereafter the " University of Tokyo...
(Medical)
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In response to the special treatment given for Class II ventilators in the US, we have posted a block diagram of a ventilator....
(Power Supplies)
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Vitesco Technologies will use SiC components to further increase the efficiency of its power electronics for electric vehicles (EV). Through their higher efficiency SiC semiconductors make better use...
(Specialized Industrial Products)
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The characteristics of fast recovery diodes (hereafter "FRDs") and improvements in these characteristics, and their applications....
(Specialized Industrial Products)
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The diodes discussed in this chapter are devices with high withstand voltages and the ability to handle large currents, but they can be classified into several categories according to their...
(Specialized Industrial Products)
From this Article:
As the second section on Si diodes, we explain the features and applications of Schottky barrier diodes (hereafter "SBDs")....
(Specialized Industrial Products)
From this Article:
Types of Si Diodes...
(Specialized Industrial Products)
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Here we explain the gate threshold voltage, which is a crucial characteristic of MOSFETs, as well as the ID-VGS characteristics, and the temperature characteristics of each of these....
(Specialized Industrial Products)
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We will discuss the advantages of a fast trr, taking as examples the two PrestoMOS™ series of SJ MOSFET devices with even faster trr values....
(Specialized Industrial Products)
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An additional explanation of the characteristics of Si MOSFETs that are at present widely used as power switches....
(Specialized Industrial Products)
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In the previous session, we explained MOSFET parasitic capacitances. This time, we will discuss the switching characteristics of MOSFETs....
(Specialized Industrial Products)
From this Article:
Features and Positioning of Power Transistors...
(Specialized Industrial Products)
From this Article:
In the previous section, the product positioning of Si-MOSFETs, IGBTs and SiC-MOSFETs, which in recent years have become the most important power transistors, was reviewed, and super-junction MOSFETs...
(Specialized Industrial Products)
From this Article:
From this section, we will discuss "Si transistors", which however include a number of categories, such as bipolar transistors and MOSFETs, depending on the manufacturing process and device structure....
(Electronics and Microelectronics Manufacturing)
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Technology companies have to deal with a serious fact: There might not be enough young professionals to fill all positions in the near future. What companies like ROHM Semiconductor Europe do to win...
(Calibration Instruments, Standards and Reference Sources)
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Imane Fouaide works as a Field Application Engineer for ROHM Semiconductor Europe's French office in Paris. Within our interview, the 29-year old provides us with some insights about her career choice...
(Specialized Industrial Products)
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Wenjie Dong, EDI and IT Business Process Specialist at ROHM Semiconductor Europe, speaks about her second career as an IT professional....