PMP10091

first_name last_name

Part Number: PMP10091
Other Parts Discussed in Thread: PMP10090

Hi,

Could you please share out to increase the output of PMP10091 reference design to +/-24V ? This means we need Dual Boost with +24V@300mA and -24V@300mA Output ? What components need to change ?

Thanks,

over 4 years ago

0 Pradeep Shenoy over 4 years ago

TI__Intellectual 790 points

Do you have the same input voltage range in your system (5V +/- 0.5V)?

+1 first_name last_name over 4 years ago

Prodigy 70 points

Input voltage is 12 volts.

0 Bernd Geck over 4 years ago

TI__Intellectual 2770 points

Dear Sir, for 12V input you might have a look at PMP10090, an inverting buck boost w/ dual output;
controller got integrated switch, less design effort, works for 12V in and 24V out;
at 300mA you work in the range of max effcy
and line/load regulation of this topology is much better.
R1 to 118k results in +/-24Vout.
Output caps to be replaced by 50V MLCCs.
Voltage stress at semiconductors is Vin + Vout, here 36V, so Schottky might be 60V for better margin.
Depends on product and derating guidelines...
Best regards, Bernd.

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PMP10091