DRV8823: Speed control via commands

Max-ksb

Part Number: DRV8823
Other Parts Discussed in Thread: DRV8904-Q1

Hi,

in my application my pwm frequencies can't driver at higher frequencies than 500HZ and so the usual H-bridges make a high-pitched sound. Therefore I'm looking for a solution not to control the motor driver with pwm by the µC but via commands.

Can I use the DRV8823 to control a DC motor in speed 0-100% via commands instead of pwm?

over 6 years ago

0 Hector Hernandez Luque over 6 years ago

TI__Expert 8985 points

Hi Max,

This DRV requires you to manipulate xENABLE pins to turn the FETs ON/OFF, so you need to PWM through the serial interface to drive the load.

I am investigating other possible drivers that can do what you request. Please, expect a response by EOD Tuesday CDT.

0 Hector Hernandez Luque over 6 years ago in reply to Hector Hernandez Luque

TI__Expert 8985 points

Hi Max,

The DRV8904-Q1 can achieve what you are looking for. Please, look at this datasheet for more information

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DRV8823: Speed control via commands