App note from Vishay about schottky rectifiers, choosing the right one for power efficiency and cost. Link here (PDF) Schottky rectifiers have been used in the power supply industry for approximately 15 years. During this time, significant fiction as well as fact has been associated with this type of rectifier. The primary assets of Schottky […]
Tag Archives: switch mode power supply
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: 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: Designing a PSR Quasi-Resonant adaptor driven by the NCP1362
ON Semiconductor’s app note featuring 12V 12W adaptor design using NCP1362 primary side regulation controller with valley lockout that hold its switching frequency at light loads. Link here (PDF) Quasi−square wave resonant converters also known as Quasi−Resonant (QR) converters are widely used in the adaptor market. They help designing flyback Switched−Mode Power Supply (SMPS) with […]
App note: Achieving a stable power supply with fast transient response through digital control
Technical white paper from Renesas on using digital control loop to achieve more stable power supply. Link here (PDF) New trends and changing requirements in the power management industry influence how we design power supplies. Some, like the need for telemetry and system information, are more recent due to advancements in technology. Others, like the […]
App note: Troubleshooting switching power supplies
Having problem with your switching power supply design? Or just curious on common switching power supply failures. Here’s a good resource from Micrel on troubleshooting power supplies. This application note provides insight on troubleshooting and taking measurements in switching power supplies. Specific measurements include output ripple, line and load regulation, efficiency, and transient response. Troubleshooting […]
Switched-mode power supply design
Clearing out old posts before the new year, some of these might seem ancient. Great read on switch mode power supplies. From the comments: Maybe you want the index page, or the SMPS page. From the contact form, via Adafruit.