DRV8320: IDRIVE configuration by HW

Michiaki Tanii

Part Number: DRV8320

Please let me make sure IDRIVE configuration by external resister.

We understand that the resister variation is specified on the datasheet but if the resister value was out of the value specified datasheet, how does DRV8320 work ?

Please let me make sure IDRIVE configuration by external resister.We understand that the resister variation is specified on the datasheet but if the resister value was out from the value specified by datasheet, how does IDRIVE work ?

over 5 years ago

0 Michael.Walker over 5 years ago

TI__Mastermind 19720 points

Hi Michiaki,

Here is a FAQ that is helpful for IDRIVE: https://e2e.ti.com/support/motor-drivers/f/38/t/796378

If your resistor values are outside the specified values, the device will use one of the IDRIVE settings that are close to what voltage that resistor produces on the IDRVIE pin, but this voltage could be close to the transition point between two IDRIVE settings making the device not select the intended IDRIVE. This wrong IDRIVE could cause damage on your FETs.

Regards,

Michael

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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DRV8320: IDRIVE configuration by HW