SM72295 supplies

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Posted by Michael Galizzi

on Mar 20 2012 07:17 AM

Hi,
I am planning a low-power inverter that must work with a DC voltage input from 3 up to 12 volts on the full H-bridge.

I' planning to use SM72295, but I'm not sure it works down to 3v.

Also, does the SM72295 works with 5v of VCC (and 3.3v VDD)?

Thanks.

All Replies

Posted by Perry Tsao96839

on Apr 05 2012 12:27 PM

Prodigy120 points

The voltage on the H-bridge can vary from 3V - 12V with no issue.

The SM72295 can work with VDD=3V and 3V logic input signals, however it requires that VCCA and VCCB have a minimum of 8V. There is a UVLO that shuts the driver stage down when VCCA and VCCB drops below approximately 7V.

In your application, you would need to ensure that VCCA and VCCB still have the required 8V voltage available even if the input voltage drops down to 3V.

Perry

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