This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC21520: VDDA或VDDB欠压恢复时间过长

Part Number: UCC21520

UCC21520的欠压恢复时间是多少?当UCC21520的VDDA或VDDB达到欠压恢复阈值后多久才会输出PWM?

  • HI

        见datasheet 第17页:  7.5 Power-up UVLO Delay to OUTPUT

        Before the driver is ready to deliver a proper output state, there is a power-up delay from the UVLO rising edge to output and it is defined as tVCCI+ to OUT for VCCI UVLO (typically 40us) and tVDD+ to OUT for VDD UVLO (typically 50us).