TPS62816-Q1: EN fall after VIN decreaseing

Lijia Zhu

Expert 6100 points

Part Number: TPS62816-Q1

Hi team,

Is there any risk if EN is keep high for about 10ms when VIN is 0V?

B&R

Lijia

over 1 year ago

0 Tanvee over 1 year ago

TI__Genius 17741 points

Hi Lijia,

I don't see it will damage device if there is no supply. How much voltage are you expecting on enable pin? make voltage not goes higher than supply voltage.

Best regards,

Tanvee

0 Lijia Zhu over 1 year ago in reply to Tanvee

TI__Expert 6100 points

Hi Tanvee,

The EN voltage may higher than VIN. I think it should be a risk that leakage current flows from EN to VIN. Any other risk?

B&R

LIjia

+1 Tanvee over 1 year ago in reply to Lijia Zhu

TI__Genius 17741 points

Hi Lijia,

Apart from this I dont see other risk. Can you give more information on application ? why EN is high.

Thanks,

Tanvee

0 Lijia Zhu over 1 year ago in reply to Tanvee

TI__Expert 6100 points

Hi Tanvee,

EN is controlled by another timing controller, in some power down cases, EN will keep high while VIN is powered off.

I will close this thread. Thank you very much!

B&R

Lijia

Power management

Power management forum

TPS62816-Q1: EN fall after VIN decreaseing