Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.

TPS92390: Operation at VIN = 16.5V +/- 10%, LED in series: 5 WLED

Part Number: TPS92390
Other Parts Discussed in Thread: TPS92380, , TPS61194, TPS92381

Tool/software:

Hi team.

Can customer use TPS61194, TPS92380, TPS92381, TPS92390 for below condition?

VIN = 16.5V +/- 10%, LED in series: 5 WLED?

I think there is variation of LED and it can't be boost operation if the VIN is 18.15(16.5+10%). I don't know whether it cause the constant current sinking or not. Also my another concern is maximum duty. 

Could you advise the solution? There can be 5V rail stepped down from 16.5V +/- 10%.

Regards,

Hayashi