Overcurrent protection for TPS61032

Hi Detlef,

I believe this depends on your application. You mentioned USB, so is this being used as a charging port for mobile devices?

If charging port, you probably want a USB charging controller which can detect what type of device is connected and charge it at the maximum current allowed.

If not, then you probably want a simple USB load switch with a fixed current limit (perhaps a 500mA limit).

Both of these devices can be found on this search page:

http://www.ti.com/lsds/ti/power-management/usb-power-and-load-switches-products.page

We have power and charging port controllers (first option) or load switches (second option).

Let me know if you have further questions with selecting a device.

Thanks!

Alex

Edit: Aside from the above suggestions, do note that the TPS61032 has its own internal current limiting of the switch current to 4A (typ). Additionally, it has a soft start current limit of 0.4 x Isw. See pages 3 and 11 of the datasheet for further details.

Hi Alex,

thanks for the answer. Yes, we want to supply a USB port for charging mobile devices.

We chose TPS61032 because

- we run from single cell Li, thus we have to boost

- we need the low quiescent current when ideling for long on the Li cell

- we need the good efficiency from the synchronous rectifier

- we want to supply 1A

Did I miss a device of the ti portfolio which is better suited?

I'm aware of the overcurrent and overheating protection of the  TPS61032. But some devices of the pilot lot blew off with some USB loads.

Thanks

Detlef