TPS61089: TPS61089X schematic review

river xie

Part Number: TPS61089

TPS61089X schematic review,

1.Please focus on the accuracy of the PIN4 COMP circuit.

2.Are there any problems with the selection of other components?

0 Helen chen over 4 years ago

Hi River,

Could you please attach the schematic?

0 river xie over 4 years ago in reply to Helen chen

0 Helen chen over 4 years ago in reply to river xie

Dear Sir,

What is the Vin, Vo/Io for this motor application? generally for the motor application, we add big caps at the output side.

I revised the compensation value and the frequency setting value. See below sch:

0 river xie over 4 years ago in reply to Helen chen

VIN is the battery, and the battery voltage range is 3.4-4.4V. VO is 12V. If VO powers the motor, how big should the output capacitor be?

0 Helen chen over 4 years ago in reply to river xie

It depend on the output load current. generally for the motor application, at least 47uF EL cap is added at the output side.

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