UCC256403: Can we use external LDO regulator to drive MOSFETs instead of RVcc?

AJIT JAIN

Part Number: UCC256403
Other Parts Discussed in Thread: UCC256303

Tool/software:

We are planning to use parallel MOSFETs in LLC topology for current sharing. Since, the RVcc maximum current is 100 mA, so we are deciding to go with external LDO for driving external gate driver.

The schematic is explained below.

Question - Will UCC256303 work properly?

4 months ago

0 Mike O' 4 months ago

TI__Guru 73495 points

Hello,

Your inquiry is under review and I will get back to shortly.

Regards,

0 Mike O' 4 months ago in reply to Mike O'

TI__Guru 73495 points

Hello,

You should be able to use external drivers. Just make sure your HS connection and boost circuit for the high side drivers are setup correctly.

Regards,

Power management

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UCC256403: Can we use external LDO regulator to drive MOSFETs instead of RVcc?