DRV8312evm REVD can not open pwm control when use F28027

yanzhen fu

Other Parts Discussed in Thread: DRV8312, INSTASPIN-BLDC

HI:

I used F2802xx control card insert DRV8312EVM board . and edited cord to run motor. but DRV8312 can not output PWM while there are PWM input from F28027.

I tested PWMA, PWMB,PWMC. ,definite there are pulse existed . but OUTA, OUTB,OUTC has not!

when i used F28035 control card , every think is ok , OUTA,OUTB,OUTC has pwm out to motor. I do not know why. please help!

best regards

hunk!

over 7 years ago

0 Betty Guo over 7 years ago

TI__Expert 7300 points

Hi Yanzhen,

The reason maybe is F28027 control card code. DRV8312 EVM work depend on input signal.

One suggestion is that you can match the F28027 control signal and F28035 control signal. also take a look at RESET_A, RESET_B and RESET_C.

thanks.

0 yanzhen fu over 7 years ago in reply to Betty Guo

Genius 4005 points

HI
Betty:
RESET_A, RESET_B and RESET_c has same as F28035. there are pluse also.

0 Betty Guo over 7 years ago in reply to yanzhen fu

TI__Expert 7300 points

Hi Yanzhen,

Refer to the control cards TMDSCNCD28035MISO pre-flashed with InstaSPIN-BLDC to spin motors using included GUI.

Do you have a correct programming in F28027 or F28027F? As I know, F28027 is different with F28027F in InstaSPIN-FOC.

Thanks.

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DRV8312evm REVD can not open pwm control when use F28027