Device suggestion for Dual Buck Converter

Mayank Mishra

Other Parts Discussed in Thread: TPS54061

Hello Team,

My client is looking for Dual Buck Converter with following specifications:

Dual Buck – 24V DC to +15V, >60mA, 3.3V@200mA

Voltage converter - +15V to -15V, 10mA > For Opamp dual supply

Can you please help to specify the best TI part for the same.

0 David_Daniels over 5 years ago

Here is a dual +/- output supply for opamps using a wide vin buck. It uses a catalog coupled inductor to create a positive and negative output.

This appnote circuit could be use to generate the +/-15V from 24V

other related documents to using a buck as an inverting supply.

0 Mayank Mishra over 5 years ago in reply to David_Daniels

Thanks for the quick response David.

Can you also address the first part where-in they are looking for suggestions for Dual Output Buck Convertor :

Dual Buck – 24V DC to +15V, >60mA, 3.3V@200mA

0 David_Daniels over 5 years ago in reply to Mayank Mishra

Check out the TPS54383 dual, the selection of >24V input dual is limited.

I think using the split rail idea shown in the http://www.ti.com/lit/an/slva369a/slva369a.pdf and the TPS54061 to converter 24V to 3.3V would be potential solution.

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