TPS25910: Asking for the recommendation on TPS25910 design

Hi SHH,

May I know what is the maximum load current in customer's system.

At a first glance, I can see that the TVS at the input and Schottky at the output are missing.

Hi Praveen,

the max current is 5.5A. from spec recommended, it shows max current Iout is 5A.

Can TPS25910 support this? If not, would you please recommend the proper one with the CB&UL certified?.

BR,

SHH

Hi SHH,

You can use TPS25910 for 5.5A max load current. As you can see below the maximum load current needs to be less than 5.6 A for R(RLIM) = 29.4 kΩ current limit setting.

The schematic looks okay except for the TVS at the input and Schottky at the output. You can consider using SMAJ13A for TVS and MBR230 for Schottky.

Please be aware that the external mosfet driven by TPS25910 can block reverse current only when the eFuse is disabled. When the eFuse is enabled, there is no intelligence in TPS25910 to detect reverse current and block it. In case you want true reverse current blocking under all conditions, you can consider using TPS25942 or TPS25944 family of devices (but these devices can handle only a max load current less than 4.78A).

You can also consider using our latest high current efuse TPS24750 (in case you need reverse current blocking) or TPS25982 for this application.

Hi Praveen,

thanks. 

from the spec, it shows max current is 5A. I would like to double confirm with you that it is ok for 5.5A case on TPS25910.

BR,

SHH