DRV8821: DRV8821

eli

Guru 13485 points

Part Number: DRV8821

using DRV8821 , It works fine with a step motor with 2.5 ohm resistance.

However with other set motor with a resistance of 100 ohm , The motor is making

noises and is not moving.

Any Idea ?.

over 8 years ago

0 Rick Duncan over 8 years ago

TI__Guru** 114905 points

Hi Eli,

Please provide the VM and VREF voltages, the sense resistor values, and how the stepper is being driven (full step, half step, etc).

Also can you provide the complete motor specifications (rated voltage, rated current, inductance)?

0 eli over 8 years ago in reply to Rick Duncan

Guru 13485 points

Hi Rick
The problem solved.
Thanks

Motor drivers

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DRV8821: DRV8821