DRV8306: PWM Minimum Duty Cycle

Danilo A.

Mastermind 29870 points

Part Number: DRV8306

Hi Team,

A customer wants to know the minimum PWM duty cycle of DRV8306.

Regards,

Danilo

over 5 years ago

0 Adam Sidelsky over 5 years ago

TI__Guru 65650 points

Danilo,

Thanks for posting on the MD forum!

Let us check on this and get back to you this week.

Regards,

-Adam

0 Aaron Barrera over 5 years ago in reply to Adam Sidelsky

TI__Mastermind 26046 points

Hi Danilo,

I tested the minimum PWM duty cycle of DRV8306 using the DRV8306EVM and a PWM frequency of 20kHz and VM = 12V.

I lowered the PWM duty cycle by increments of 0.01% from 1% until I did not see any response on the GHA pin.

With a minimum duty cycle of 0.75% (~380ns ON time), I was able to get a response on output SHA. I attached the oscilloscope screenshot below showing a response of SHA (CH1) with PWM (CH2).

0 Danilo A. over 5 years ago in reply to Aaron Barrera

TI__Mastermind 29870 points

Hi Aaron,

Thank you for your effort to test the device and for the result.

Regards,

Danilo

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DRV8306: PWM Minimum Duty Cycle