DRV8847: Possible to operate 4 independent channel with 4 independent PWM signal

Tarun Kumar2

Part Number: DRV8847

Hi,

We are using DRV8847 to operate 4 relays. In the independent bridge interface, the DRV8847 device can operate 4 independent channel with 4 independent input PWM signal ?

Best Regards

Tarun Kumar

over 4 years ago

0 Wang5577 over 4 years ago

TI__Guru 56650 points

Tarun,

Yes. It can.

0 Tarun Kumar2 over 4 years ago in reply to Wang5577

Prodigy 210 points

Hi Wang,

Thank you for sharing the information, but my query is that, thus can we operate 4 independent channel with 4 PWM signal.

or the PWM mode is only for two inputs as shown in the attached image.

Thanks & Regards

Tarun Kumar

0 Wang5577 over 4 years ago in reply to Tarun Kumar2

TI__Guru 56650 points

Tarun,

PWM means pulse width modulation.

DRV8847 only has two current sense pins: ISEN12 and ISEN34. If customers want to use DRV8847 to adjust the PWM duty cycle according to the output current setting, DRV8847 only can support two outputs.

But, if customers can adjust the PWM duty cycle by themselves, DRV8847 can allow 4 independent channel with 4 PWM signal.

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DRV8847: Possible to operate 4 independent channel with 4 independent PWM signal