TPS65150-Q1: DLY1 and DLY2 pin setting if no delay time required

Rocson He

Intellectual 1830 points

Part Number: TPS65150-Q1

Hi Team,

My customer has one new panel that requires the AVDD/VGH/VGL power up the same time, thus no delay time requested.

Could you help suggest what should we do with DLY1 and DLY2 pin of TPS65150-Q1 ?

Does it must require one cap like 1pF, or could we short it to GND, or with some suitable value resister ?

Thanks.

over 6 years ago

0 Aaron Goodson over 6 years ago

TI__Expert 6330 points

Hi Rocson,

I have notified our expert regarding this topic. Please expect a response by 12/19/18.

Thanks,
Aaron

0 Liaqat Khan over 6 years ago in reply to Aaron Goodson

TI__Mastermind 18550 points

Hi Rocson,

To minimize the delay between AVDD/VGL/VGH coming up, DLY1 and DLY2 pins should be left un-connected.

Kind Regards,
Liaqat

0 Rocson He over 6 years ago in reply to Liaqat Khan

TI__Intellectual 1830 points

Hi Liaqat,

Do you mean just leave DLY1 and DLY2 floating ?

Thanks.

0 Liaqat Khan over 6 years ago in reply to Rocson He

TI__Mastermind 18550 points

Hi Rocson,

Lets connect them to footprints for capacitors and just leave them not installed. So basically floating with an option to put small value capacitor like 1pf. But I am sure we will not need to install capacitor as the floating pins will have a small parasitic capacitance that will charge very quickly to provide minimum delay.

Kind Regards,
Liaqat

Power management

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TPS65150-Q1: DLY1 and DLY2 pin setting if no delay time required