This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LAUNCHXL-F28379D: motor1.drv8305.DRV_fault in "Dual Motor Control Using FCL and Performance Analysis Using SFRA on TMS320F28379D LaunchPad" Level1

Part Number: LAUNCHXL-F28379D
Other Parts Discussed in Thread: 2MTR-DYNO, , BOOSTXL-DRV8305EVM, DRV8305, SFRA, CONTROLSUITE, C2000WARE

Hello, i have a similar problem to this thread.

I have the same set: LAUNCHXL-F28379D, two BOOSTXL-DRV8305EVM's, and a 2MTR-DYNO.

I started working on the project in the title (and in the other thread) with the following voltage supply connected to the DRV8305's:


   Model: UHP 1000 - 36

   Output: 36V    19.6A

Jumpers JP1-JP5 are not populated, JP6 is populated, as the project suggested.

I followed the first steps (set MOTOR1_DRV and MOTOR2_DRV to DRV8305; Rebuild; Debug; CPU reset; Restart; Enable Real Time Mode; Resume; Set EnableFlag to 1).

While running the projekt (on Build Level 1), it stays in the loop below (FCL_SFRA_XL_DualServo.c)

#elif (MOTOR1_DRV == DRV8305)
	InitDRV8305Regs(&motor1, DRV1_GAIN);
//	motor1.drv8305.cntrl7_gd.bit.PWM_MODE  = drv8305_PWM_mode_6;
	while (motor1.drv8305.DRV_fault) ;      // hang on if drv init is faulty

because i have these error flaggs set (PVDD_OVFL, VCHP_UVFL):

The voltage supply is not adjustable, so the solution from the other thread is not an option (for now).

Also the DRV8035's supply voltage ranges from 4.4V to 45V, so 36V supply should be fine. Am i mssing something?

I would be thankful for any clue.