DRV8835: DRV8835 Output appear a peak

Lei wang

Expert 1620 points

Part Number: DRV8835

Sir when i use DRv8835 for Stepper motor. the DRV8835 Output appear a peak. But the MCU output is OK. The T =60ms .

over 7 years ago

0 Rick Duncan over 7 years ago

TI__Guru** 114905 points

Hi Lei,

It is difficult to interpret the scope image.

What are the two channels shown on the scope?
Can you add the two inputs plus the two outputs?
What is the time scale?

0 Lei wang over 7 years ago in reply to Rick Duncan

Expert 1620 points

HI Rick:

the yellow is MCU output. DRV8835 Input ; the purple is DRV8835 output Motor input。 And the Stepper motor control by four lines . All channel is the same. T=60ms PWM= 40% Vcc=VM=3.3V VCC and VE from two LDO.

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DRV8835: DRV8835 Output appear a peak