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Q&A voltage inverter

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voltage inverter

mkao on Oct 15, 2021

Is there a voltage inverter IC, 3.3V to -3.3V with >1A output current?

If not, any idea of a circuit to do the job?

Thanks

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RDSmith
Oct 20, 2021 +1 suggested
You can use a buck converter as an inverter by connecting the power stage output to GND and the IC ground to the negative rail.

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0 RDSmith

on Oct 20, 2021 6:07 PM
You can use a buck converter as an inverter by connecting the power stage output to GND and the IC ground to the negative rail.
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0 mkao on Nov 2, 2021 5:52 PM in reply to RDSmith

Thanks for the suggestions but that requires an external schottky diode, which could be big.
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0 Fil

on Nov 3, 2021 2:38 AM in reply to mkao
Hi mkao,

1A output is not so small that you could really end up using significant size diode at output. You may also take a look at ADP5074 which is really an inverter but per my checking can only deliver up to 0.8A for your requirement voltages. The switch is internal so you only have diode and inductor external components plus capacitors of course.
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0 mkao on Nov 6, 2021 4:16 AM in reply to Fil

Yes. ADP5074 cannot have 1A output
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0 mkao on Nov 6, 2021 4:16 AM in reply to Fil

Yes. ADP5074 cannot have 1A output
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