Dear team,
My customer found that the test result of OUT1/OUT2 is not matched with below truth table under PH/EN mode. When IN1=1&IN2=1, OUT1=OUT2=H which is not matched with below table. They use SPI version, and their register configuration is IC1 Control Register=01 0 100 00, IC2 Control Register=default value, IC3 Control Register=0 011 0 0 0 0, IC4 Control Register=default value. Could you please help analyze the problem?
Thanks & Best Regards,
Sherry
Sherry,
The truth table shown above is for PH/EN interface. Their results seem to match the PWM and independent control truth table. However, they are setting the MODE to PH/EN in IC1 register. Have they tried to read back the registers to check it was written correctly? My guess is that the driver is configured in either PWM or independent half-bridge and that explains why it does not seem to follow the PH/EN truth table.
Hi Pablo,
Thanks for your reply!
They didn't configure the PH/EN mode successfully. Because they configure it after DISABLE becomes low signal.
Thanks & Best Regards,
Sherry
