WEBENCH® Tools/TPS43061: LDRV side MOSFER was burned of TPS43061

jianguo zhu

Prodigy 170 points

Part Number: TPS43061

Tool/software: WEBENCH® Design Tools

Dears,

I used the chip of TPS43061 as NOTE 1 of the datasheet ,but the MOSFET of QL was always burned.

VIN is 12V and VOUT is 15V,current is 2A, the VDS of burned was 30V.

If I changed the QH to Diode,then QL was not burned,why?

over 8 years ago

0 EricLee over 8 years ago

TI__Guru 58671 points

Hello
I guess you added an external circuit which hurts the adaptive dead-time control operation of the device.
Thanks.

0 Youhao Xi over 8 years ago

TI__Guru* 78240 points

By NOTE 1 do you mean the footnote about the boot diode on the first page of the datasheet? Can you share your schematic, and send the SW waveform during operation (before QL is damaged)? Please make sure the external components are accurately labeled on your schematic.

Power management

Power management forum

WEBENCH® Tools/TPS43061: LDRV side MOSFER was burned of TPS43061