Using Duty Cycle To Detect Power Supply Overload (Part 3): Accounting For A Variable Input Voltage

Focus:

Part 3 in this article series on using duty cycle as a means of detecting overloads in an SMPS extends the concept from the case where input voltage is fixed to the case where input voltage varies over a wide range. In this latter case, the reference threshold voltage used to detect overload must change. This article describes a method for making this adjustment of the reference threshold value.

What you’ll learn:

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

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Author & Publication:

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

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