Dear All,
I am debugging using customer board(TMS320F28035 + DRV8302: DC bus voltage: Max 32V, Phase Current: Max 20A, RPM: Max 3000RPM, PWM= 15kHz, Servo Motor).
Unfortunately we found "FAULT" signal as soon as we operated.
(The signal pattern of "FAULT" pin is " High-Low-High-Low-High-Low-...". As it were, high-low pattern repeated continuously.)
So we checked all spec sheet of DRV8302.
-. 10ms delay is right after setting EN_GATE.
-. We could not found out any "Fault and Warnging Reporting and Handling" at page 15 of DRV8302 spec sheet.
(PVDD Undervoltage, DVDD undervoltage, GVDD undervoltage, OTW, OTSD_GATE, OTSD_BUCK, Buck Output undervoltage, Buck Overload,
External FET overload-current limit mode, External FET overload-Latch mode, External FET overload-reporting only mode)
How can we solving this error?
Please help me.
Sincerely,
Joseph