TPS563210A: the maximum Css value

Ben Kuo

Expert 7570 points

Part Number: TPS563210A

Dear team,

May I learn from you the maximum Css value of TPS563210A?

Thanks.

Regards,

over 4 years ago

0 Vincent Zhang(BSR) over 4 years ago

TI__Expert 4795 points

Hi Ben,

Let us check on bench and feedback to you later. Does your customer have any concern about this Css value?

0 Young Zhao over 4 years ago

TI__Genius 9540 points

Hi ,

Normally TPS563210A can support 10mS max soft start time (82nF) . Please let us know if this data okay for customers .

We can also check on bench if customers want to use a larger Css.

BRs,

Young

0 Ben Kuo over 4 years ago in reply to Young Zhao

TI__Expert 7570 points

Hi Young,

They would like to maintain power with supercap and want to control inrush current via SS funcion.

They want to use 1uF or higher Css for this application.

Regards,

0 Young Zhao over 4 years ago in reply to Ben Kuo

TI__Genius 9540 points

Hi,

I will check it on EVM with supercap . And will share the results later .

BRs,

Young

0 Ben Kuo over 4 years ago in reply to Young Zhao

TI__Expert 7570 points

Hi Young,

Thanks, customer use 7.5F supercap at TPS563210A output side. (6~12Vin to 4.2Vout)

Regards,

0 Young Zhao over 4 years ago in reply to Ben Kuo

TI__Genius 9540 points

Hi Ben,

I'm working on the test. Please help confirm that the max steady state current and start up loading .

As i find that tps563210A can startup under most conditions (<~2.9A startup loading) with 12Vin-1.05Vout .

Could you help share the SCH so i can configure the EVM as customers board to check the possibility .

BRs,

Young

0 Young Zhao over 4 years ago in reply to Ben Kuo

TI__Genius 9540 points

Hi Ben,

update some test results. Condition 12Vin-4.5Vo with CSS 1uF on EVM (L changed to 3.3uH, Vo changed to 4.5V, Css changed to 1uF).

TPS563210A can start up well with 1UF Css cap . But at 3A loading start up , the SS time seems reduced to ~45ms .

Other SS time seems normal ~ 140ms.

1. 12Vin-4.5Vo _2A start up loading

2. 12Vin-4.5Vo _3A start up loading

BRs,

Young

0 Ben Kuo over 4 years ago in reply to Young Zhao

TI__Expert 7570 points

Hi Young,

Thanks for your great support.

I will do some test with customer.

0 Vincent Zhang(BSR) over 4 years ago in reply to Ben Kuo

TI__Expert 4795 points

Hi Ben,

Will close this thread. Let us know if you need further support.

Power management

Power management forum

TPS563210A: the maximum Css value