Tool/software:
Hello. We are currently examining the circuit while utilizing your evaluation board (LM5176EVM-HP).
I need some additional information LM5176 that are not specified in datasheet:
During boost operation, HDRV1 is fixed high and LDRV1 is fixed low.
How does the LM5176 charge the bootstrap during boost operation?
We understand that LDRV1 must be switched in order to charge the bootstrap.
The image below shows each gate signal during boost operation.
Best regards,
Takano