DRV8307: BLDC Motor driver abnormal operation

TS Yang

Genius 4800 points

Part Number: DRV8307

Hi,

I'm beginner for motor driver, and have a problem with using TI's DRV8307

The symptom is as below.

-> when repeat start and stop in turn, discover the symptom that do not start.

: The motor emits a high requencty sound.(in a view of the step motor, it seems out of phase.)

Opeatation sequence :

ON sequence : ENABLE On -> PWM operate 1% ~ 100% 1ms period 1% step.

OFF sequence : 1% ~ 100% 1ms period 1% step ENABLE Off

What do you think the root cause is?

Hall Position recognition failure?

Incorrect operating procedure when driving motor?

Regards,

over 7 years ago

0 Luis Riveros over 7 years ago

TI__Expert 4435 points

Hello TS,
Our experts have been notified and will reply as soon as possible.

0 TS Yang over 7 years ago in reply to Luis Riveros

Genius 4800 points

Hello Luis,
I'm still waiting your response.

thanks,
TS

0 Phil Beard over 7 years ago in reply to TS Yang

TI__Expert 4650 points

Hi TS,

This is often a problem due to the incorrect hall sensor connections. Section 8.1.1 on page 20 of the datasheet outlines correct Hall Sensor connections for this device. I would recommend ensuring correct hall sensor connections (Phases lined up with Hall Sensors), as well as ensuring the correct bias voltage on the HX- pins if using Hall ICs.

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DRV8307: BLDC Motor driver abnormal operation