TPS92390: TPS92390 problem

Aosker Liu

Part Number: TPS92390

Hi team

Good day

My customer want to know that:

Can you please tell me that how can we achieved spread spectrum enabled in Boost mode
I have to use this IC with my 21.5" display
what should be my Vin and VDD for full feature support in tps92390

Regards

Aosker

over 2 years ago

0 Frank Qiu over 2 years ago

TI__Genius 15776 points

Hi Hardy, could you help Liu in this case.

0 Hardy Wu over 2 years ago

TI__Genius 12915 points

Hi Aosker,

You could tie BST_SYNC with VDD to enable the boost spread spectrum function.

I think the VIN and VDD requirements is from whole display system but not LED driver right? This device can support all range within datasheet.

0 Aosker Liu over 2 years ago in reply to Hardy Wu

TI__Prodigy 520 points

So I can apply 3v3 on both?5V on Vin is full feature requirement

0 Hardy Wu over 2 years ago in reply to Aosker Liu

TI__Genius 12915 points

Hi Aosker,

Yes it is OK to apply 3.3V to both VDD and VIN. Charge pump function need to be turned on when VDD below 5V. But the efficiency is not good while VIN is low. What application and LED configuration customer want to designed for?

0 Frank Qiu over 2 years ago in reply to Hardy Wu

TI__Genius 15776 points

if there is no further feedback i will close this thread.

Power management

Power management forum

TPS92390: TPS92390 problem