DRV8302 operating voltage

bill fung

Prodigy 20 points

Other Parts Discussed in Thread: DRV8302

hi,

For DRV8302, Minimum operating voltage is 8v (PVDD1) ... i want 6V actually

i also see the VPVDD_UV (under voltage protection limit) is 6V (Max)

does it means it can still work normally when PVDD1 > 6V ??

thanks !!

over 12 years ago

0 Milan Rajne over 12 years ago

TI__Expert 8885 points

Hello Bill,

Even though Pvdd UV protection is at 6V but GVDD UV protection is at 8V max (GVDD is required for proper operation of gate drivers. and charge-pump), therefore DRV8302 will not function below 8V.

0 bill fung over 12 years ago in reply to Milan Rajne

Prodigy 20 points

Thanks for prompt reply!

0 Ryan Kehr over 12 years ago in reply to bill fung

TI__Guru 55625 points

Bill,

We have actually been internally discussing bringing the voltage down to a guarenteed 6V minimum on the DRV8302. It will operate down to 6V, but your Vgs on the FETs will be compromised slightly.

This is what the new spec will look like once we update the datasheet which is a few weeks away.

GX_NORM

Gate driver Vgs voltage PVDD = 8–60V 9.5 (min) 11.5 V (max)

GX_MIN

Gate driver Vgs voltage PVDD = 6–60V 8 (min) 9.5 V (max)

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DRV8302 operating voltage