ZHCSP86E May 2020 – February 2024 UCC5350-Q1
PRODUCTION DATA
The VCC1 input power supply supports a wide voltage range from 3 V to 15 V and the VCC2 output supply supports a voltage range from 13.2 V to 33 V (UCC5350MC) or 9.5 V to 33 V (UCC5350SB).
For operation with unipolar supply, the VCC2 supply is connected to 15 V with respect to VEE2 for IGBTs, and 20 V for SiC MOSFETs. The VEE2 supply is connected to 0 V. In this use case, the Miller clamp helps to prevent a false turn-on of the power switch without a negative voltage rail. The Miller clamping function is implemented by adding a low impedance path between the gate of the power device and the VEE2 supply. Miller current sinks through the clamp pin, which clamps the gate voltage to be lower than the turn-on threshold value for the gate.