Part Number:DRV8873S-Q1EVM
Hello,
i have a big problem with a new DRV8873S-Q1EVM kit.
It worked correctly for half an hour then i testet it with undervolt and motor block and now it is defekt.
The modul is powered from a "LABORATORY DC POWER SUPPLIES" with 15VDC and max. 3A current control. The Motor takes 1.5A at block at 15VDC.
At first test all function was normaly, motor moves forward and backward at any speed.
Than i testet it with undervoltage 4V and with blockt motor at 15VDC and 1.5A.
After this test the modul don't work anymore. I messured the 15VDC on Pin13/20 at DRV8873S, 15VDC are ok.
Messured 3,3V at MSP430 and 5V at FT232RL are also correct. I can connect via serial over USB and get the Motor control window working.
On the motor control window all faults show red and under "Fault Status" on the upper right side it shows "No Power"
The "CLEAR FAULT" Button don't work and all Faults stay on red.
I messured the voltage at pin 1 "DVDD" on the DRV8873S-Chip and there are only 0.683V
Is it possible to kill the DRV8873S with 15V and 1.5A without any heat or is there an other issue for my problem?
PS: STATUS LED is blinking normaly, VM-Led lights and nFAULT flickers some times.
