TPS2663: schematic check surge stopper

GARETH OU

Guru 11445 points

Part Number: TPS2663

Could you help check the TPS2663 schematic as below and any need to adjust ?

Thanks you

Surge stopper 1.pdf

over 4 years ago

0 Rakesh over 4 years ago

TI__Guru** 105661 points

Hi Gareth,

Thanks for reaching out!

What level of surge immunity you are aiming for ? Is it 500V with 2 Ohm coupling impedance ? Please refer Table-4 in https://www.ti.com/lit/an/slva711/slva711.pdf and confirm your requirements to suggest the transient protection diodes.

Best Regards, Rakesh

0 GARETH OU over 4 years ago in reply to Rakesh

Guru 11445 points

Hi Rakesh

1. Is it feasible to design SHDN# pin on/off control?
2. Is Input reverse voltage protect function feasible?

3. Below is checked Surge test data it’s correct Calculation form?

(Vin-Vtvs)*Vtvs/Req*t

0 Rakesh over 4 years ago in reply to GARETH OU

TI__Guru** 105661 points

Hi Gareth,

1A) yes SHDN# pin can be used to control the device ON/OFF

2A) With external FET Q1 on the B-GATE, the device provides Input reverse voltage protection.

3A) correct.

Best Regards, Rakesh

0 GARETH OU over 4 years ago in reply to Rakesh

Guru 11445 points

Hi Rakesh

Thanks you

Power management

Power management forum

TPS2663: schematic check surge stopper