Using Duty Cycle To Detect Power Supply Overload (Part 4): The Circuit Block Diagram

Focus:

Previous parts of this article described how a switching power supply’s duty cycle can be used to trigger overload protection for the cases where 1) VIN is a relatively stable or unchangeable input or 2) the supply voltage may change within wide limits. Here in part 4, more details are given on how to implement these two forms of overload protection in the same circuit. A diagram shows that, in the buck converter design example, two protection circuits are switch selectable.

What you’ll learn:

• How to use duty cycle to detect overloads in PWM-based power converters

View the Source

Author & Publication:

Gregory Mirsky, Continental Automotive Systems, Deer Park, Ill., How2Power Today, Jul 15 2017

This article summary appears
in the HOW2POWER Design Guide.

The Design Guide offers
organized access to
hundreds of articles
on dozens of power conversion
and power management topics.

The Design Guide search results
include exclusive summaries
and accurate "how to" analysis
to help you make faster,
more informed decisions.

Search
for more articles