TPS65197: release VGH locking status

April Jiang

Part Number: TPS65197

My customer has questions on release VGH locking status. In DS, power down chapter, shows that " When the discharge-sense (DIS_SENSE) voltage falls below its typical threshold voltage of 1.26 V, all clock output channels follow VGH until VGH falls below its typical falling UVLO threshold voltage of 3.5 V " .

Is there any other ways to relese VGH locking status ( all clock output channels follow VGH ) ? Except VGH falls below its typical falling UVLO threshold voltage of 3.5 V.

Thanks very much.

over 6 years ago

0 Grant Falkenburg over 6 years ago

TI__Intellectual 1965 points

Hi April,

Let me contact the expert for this part. You should expect to see a response by November 1.

Best,
Grant

0 Liaqat Khan over 6 years ago

TI__Mastermind 18550 points

Hi April,
I reviewed TPS65197 discharge and it follows the behavior as described in the datasheet i.e. once discharge-sense voltage falls below its threshold voltage, clock output follow VGH until VGH falls below its UVLO level at which time outputs follow VGL1. Unfortunately, I don't see a way to change this power down behavior.

Kind Regards,
Liaqat

0 April Jiang over 6 years ago in reply to Liaqat Khan

TI__Intellectual 830 points

Thanks very much for your comment, Thanks,

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TPS65197: release VGH locking status