Part Number: SM72295EVM Hello
I cannot drive the high side MOSFETs (DC or with a 16kHz PWM) because the HOA/HOB lines are always at VCC and don't respond even to the OVS signal, which correctly turns LOA and LOB lines off. I tried grounding HIA and…
Part Number: SM72295EVM Other Parts Discussed in Thread: SM72295 , , LM317 Howdy,
Currently helping on a design that is using the MSP430 to drive the inputs of the SM72295 with two PWMs that are opposite of each other. One PWM is tied to HIA and LIB, and…
Hi Nicholas,
Thanks for the update. It doesnt look like HOA/HOB are 180deg separated and not completely interleaved for 2 phase. I went ahead and included the schematic review in a screenshot below. I also put the SM72295EVM on the bench and verified…
Hi Nicholas,
Thanks for the update and great questions and understanding, and that’s a lot of deadtime! I would like to have a look at all 4 input signals, it seems that the half bridge is not being switched correctly. If everything is switching correctly…
