TPS43351-Q1: Filter resistor and capacitor selection for DCR sensing

Christopher Richardson

Part Number: TPS43351-Q1

Hello,

I would like to use DCR sensing with this part. The datasheet says this is possible but does not provide any guide for calculating the parallel R-C branch. Do you have some design equations?

Many thanks,

chris

over 5 years ago

0 Krishnamurthy Hegde over 5 years ago

TI__Expert 8730 points

Hi Chris,

Can you please take a look at the below application note? It is for TPS65310/TPS65311 BUCK1 controller. But TPS65310/TPS65311 BUCK1 and TPS43351-Q1 controllers are coming from the same IP and this application note should be valid also for TPS43351-Q1. But you need to verify your design and make sure that it works for you.

www.ti.com/.../slva791.pdf

Regards,

Murthy

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TPS43351-Q1: Filter resistor and capacitor selection for DCR sensing