Other Parts Discussed in Thread: DRV594,
hi,
I recently encountered a problem with DRV593 and DRV594，
The problem is as follows:
When the equipment is powered on,TEMP_SET1 test points voltage is 2.1V，LD_TEMP1 test points voltage is 2.5V，FAULT1 and FAULT2 voltage is 0V, The chip is no work.
If I adjust R1 so that TEMP_SET1 equals about 2.5V, and then TEMP_SET1 equals 2.1V, LD_TEMP1 can reach about 2.2V.It's time for the chip to work.FAULT1 and FAULT2 voltage is 0.5V.
Why can't the chip work properly just after power-on, the chip can work normally only when the setting value is close to the actual value.
The circuit is shown below.
