Power Supply

Dec 27, 20211 min read

How Can You Determine the Turns Ratio of a Power Transformer in a Sealed DC-DC Module?

by Steve Sandler I do not know if there was a legitimate reason for this request, but I was once asked to determine the turns ratio of a...

Dec 2, 20212 min read

Why EM Is Replacing SPICE For Simulation of Board-Level Power Delivery

How2Power.com - November 2021 by Heidi Barnes, Keysight Technologies, Santa Rosa, Calif. and Steve Sandler, Picotest, Phoenix, Ariz....

Sep 21, 20212 min read

Measuring LDO Power Supply Rejection Ratio for a Novice

SEPTEMBER 25, 2016 BYJONATHAN HARRIS "As somewhat of a continuation of my last blog topic I am once again returning to measurement of an...

May 27, 20211 min read

Selecting a VRM Output Inductor

May 25, 2021 | Steve Sandler, Picotest The selection of the output filter inductor is generally made using several figures of merit...

Apr 27, 20212 min read

Tektronix App Note: Measuring the Control Loop Response of a Power Supply Using an Oscilloscope

Most power supplies and regulators are designed to maintain a constant voltage over a specified current range. They are essentially...

Mar 16, 20181 min read

Designing High Current 48V to Core Voltage Converters

To reduce power consumption, easing cooling requirements, large computer designers are migrating from 12V to core voltage power solution...

Feb 5, 20181 min read

Switched-Mode Power Supply Simulation with SPICE: The Faraday Press Edition

All common topologies are discussed, including linear, buck and flyback converters. Practical guidance is given for EMI/RFI filtering and...

Jan 19, 20181 min read

A Signal Integrity Problem? Maybe Not

In many cases, the real culprit may be power integrity or electromagnetic interference (EMI), but engineers are increasingly...

Apr 28, 20171 min read

Designing Power for Sensitive Circuits

What is a sensitive circuit? Sensitive circuits are those that can easily be degraded by power supply noise. These circuits generally...