Part Number: DRV8873
Hi,
in the attached configuration with a DRV8873 I got the problem that some samples take a high standby current of over 50 mA. Some devices only needs the specified current of unter 10mA. The ones with high standby current heats up to about 60°C. What could be the reason for this behaviour?
I tested to control both, a part with high and one with low standby current at the same position on PCB. Over SPI I can contact both devices and even the PWM-output seems to work.
Signals:
- SDO1/SDI2 connected to next driver in a chain of 5 drivers
- SDI1, connectet to CPU
- SPI-SCLK, connected to CPU
- SPI-NSCS, connectet to CPU
- FR-DI, connectet to CPU
- FR-PW, connectet to CPU
- FR-I, connectet to CPU
DISABLE-Pin on GND that output is always enabled.
Regards
Sebastian Reinig
