App note: Super Barrier Rectifier (SBR®) improves automotive supply line protection to ISO7637

App note from Diodes Incorporated on their SBR technology which can supports ISO standard supply protection. Link here (PDF) Electrical disturbances in an automotive environment present reliability and functional risks to the various electronic systems and components that may be exposed. Many modules, for example electronic control units (ECUs), have sensitive microcontrollers at their core […]

App note: AL8860Q LED driver remote mounting and LED open/short to GND protection solution

App note from Diodes Incorporated on their AL8860Q LED driver with built-in faults protection. Link here (PDF) The AL8860Q is a hysteresis mode DC-DC buck LED driver, designed for driving single or multiple series connected LEDs in automotive lamps. In some circumstances the LED string should become in fault status such as open-circuit, short-circuit, LED […]

App note: Performance comparison of 1200 V SiC MOSFET and Si IGBT Used in power integrated module for 1100 V solar boost stage

App note from ON Semiconductors comparing the performance between SiC MOSFET and Silicon IGBT in a similar and compatible power modules. Link here (PDF) This application note compares the performance of two power integrated modules (PIMs) in the boost stage of an 1100 V solar inverter. One PIM used state−of−the−art silicon 1200 V IGBT (part […]

App note: Characteristics and driving recommendations of ON Semiconductor Gen 1 1200 V SiC MOSFETs & modules

App note from ON Semiconductors on their SiC MOSFET’s key characteristics and how to drive them. Link here (PDF) Silicon carbide (SiC) is part of the wide bandgap (WBG) family of semiconductor materials used to fabricate discrete power semiconductors. Conventional silicon (Si) MOSFETs have a bandgap energy of 1.12 eV compared to SiC MOSFETs possessing […]

App note: The thermal measurement point of LEDs

App note from OSRAM on different thermal masuring locations of LEDs. Link here (PDF) When current passes through the junction area of a chip, light is emitted. Not only light is generated, but also a lot of heat. Good thermal management is a major factor for the stable performance of LEDs in applications. However, a […]

App note: Advanced bioimaging

App note from Newport about laser microscopy. Link here Optical microscopes have been instrumental in the study of the life sciences for centuries. Since the invention of the laser, many advanced bioimaging techniques using microscopy have been created with progress accelerating greatly in the last two decades. Limitations in optical penetration depth, due to the […]

App note: Ophthalmic surgery

Great read app note from Newport about non contact treatment for eye diseases using lasers. Link here Ophthalmology is the branch of medicine that deals with the anatomy, physiology and diseases of the eye. The laser is particularly suited to ophthalmic surgery since it can provide a non-contact method of interacting with the cornea or […]

App note: Serial Flash Discoverable Parameter (SFDP) Introduction

App note from Macronix on how SFDP help easily use serial flash. Link here (PDF) Serial Flash Discoverable Parameter (SFDP) standard provides a consistent method of describing the functional and feature capabilities of Serial Flash devices in a standard set of internal parameter tables. These parameter tables can be interrogated by host system software to […]

App note: Plastic package device thermal resistance

App note from Macronix on managing thermals of memory plastic packages devices. Link here (PDF) Thermal system design needs to account for heat transfer at many levels: device, board, and system level. In this document we focus on device level thermal resistance, the relationship between TJ (Junction Temperature) and TC (Case Temperature), and how heat […]

App note: Pulse capabilities for thick film power resistors

Another app note from Vishay on their thick film power resistors on pulsed application. Link here (PDF) Vishay Sfernice offers a wide range of thick film power resistors. Our resistors are able to dissipate from 5 W up to 1100 W with a large range of ohmic values (10 mOhm up to 1 MOhm). The […]

App note: How to Use an SiC Diode in a PFC Circuit

App note from Vishay on using the SiC’s diode no switching loss on PFC circuit. Link here (PDF) An SiC diode is the optimal choice for power factor correction (PFC) in continuous conduction mode (CCM) because its particular reverse recovery characteristics reduce switching losses to almost zero. The selection criteria for an SiC diode are […]

App note: Virtually increasing the number of serial communication peripherals in STM32 applications

App note from STMicroelectronics on possible alternate switching of channels to cater multiple communication routes. Link here (PDF) Application engineers often face the problem of limited number of serial communication peripherals of a microcontroller that, on the other hand fulfills all the other application requirements thanks to its features and performance. Sometimes they obviate by […]

App note: Power transistor safe operating area – special considerations for switching power supplies

App note from ON Semiconductors about less common transistors stresses when used on switching power supplies. Link here (PDF) The power transistor, in today’s switching power supply, exists in an environment which is quite hostile to semiconductors. Large currents, large voltages, high temperature, high frequency, and low impedance sources add up to something close to […]

App note: Bring a “CAN-DO” attitude to your industrial drone design

Tech note from Maxim Integrated on using the proven robustness of CAN Bus to drone’s internal parts communication. Link here (PDF) Providing predictable and error-free communications, CAN bus networks have been the workhorse of the automobile industry for over thirty years. However, they have recently found a new lease on life in other industrial applications, […]

App note: Automotive infotainment gesture control for the rest of us

Gesture recognition discussed in this tech note from Maxim Integrated. Link here (PDF) Infotainment gesture control enhances driver experience and safety by helping avoid distractions caused by fiddling with touchscreens and poorly located dials. Gesture recognition can complement touchscreens, voice, and knobs so that the driver can focus on the road. Time-of flight cameras, although […]

App note: High current LED capacitive drop drive

Fairly old app note from ON Semiconductors on using capacitors to drive LEDs off AC mains. Link here (PDF) This application note describes the basics for powering high current light emitting diodes (LEDs) utilizing a capacitive divider circuit off the AC mains. A linear regulator is used to control the LED current in order to […]

App note: A guide to choosing the right ultra low Iq low dropout linear voltage regulators

App note from ON Semiconductors that discuss tradeoffs between achivieng low quiescent current and good dynamic performance when choosing an LDO. Link here (PDF) One of the most important challenges today in designing electronic applications is to minimize the power consumption of the system. To accomplish this, most systems utilize various low power modes which […]

App note: Snubber design for noise reduction in switching circuits

Minimize noise by properly designing a snubber circuit in switching converters, app note from Alpha & Omega Semiconductor. Link here (PDF) In high frequency switching converters the designers face a common challenge of dealing with switching noise. In particular when the high side Mosfet turns on, the body diode of the low side FET, which […]

App note: Power MOSFET continuous drain current rating and bonding wire limitation

App note from Alpha & Omega Semiconductor about current limitations on MOSFETs with exposed pads. Link here (PDF) Power MOSFET datasheets will usually show maximum values for continuous drain current Id, on the first page of datasheets. For bottom exposed part such as DPAK, TO220, D2PAK, there is always a note besides Id rating saying […]

App note: Wireless gamepad solution based on LPC5528 and NxH3670

Application note from NXP Semiconductors introduces a wireless gamepad solution based on LPC5528 and NxH3670. Link here (PDF) LPC5528 is a Cortex®-M33 based microcontroller for embedded applications. It has two USB device controllers which are key peripherals for the gamepad solution: Full-speed USB and High-speed USB device controllers. All of these features make LPC5528 very […]