Other Parts Discussed in Thread: UCC27284
Our customer has some questions about our gate driver ICs.
Due to their board layout issue, they are going to use UCC27212 for their 1st prototype.
Then they will change it to UCC27284 or UCC27272 in the next prototype because they want to decrease VCC down to about 6V.
UCC27212 is a 4A/4A driver while UCC27284/282 are 3.5A/2.5A drivers.
They would like to know how drive current difference affect power loss of MOSFET and gate drive IC iteslf.
They would like to know whether there is difference in the power loss of MOSFET between using UCC27212 and using UCC27284/282.
They use three MOSFETs with QG=73nC(at 6V) and RG=0.6ohm(TYP)/1.1ohm(MAX) in parallel for both low side and high side.
The external gate drive resistance is 1 ohm that is shared for all 3 MOSFETS.
They also would like to whether there is difference in the power loss of gate driver IC itself between UCC27212 and UCC27284/282.