BS2 HW Board Current Limiting

xanadu

I'm designing a rechargeable power supply for the serial version of the BS2 HW Board. It will use 500mah 2S LiPo packs (8.4 volts max). I would like to include a current limiting component, but I'm not sure what to allow for max current. The datasheet says up to 500ma for the 5v side of the HW board, and I'm adding in another 500ma for stuff connected to Vin.

If someone were to connect Vin directly to Vss the trace on the PCB looks pretty beefy. Do you think that could handle up to 2 amps for 200ms?

Thanks.

erco

My guess is yes. Only one way to find out, though. If not, call me. I got the last 2 boxes of bulk serial HW boards.

xanadu

Thanks, yeah I was tempted to test it out : ) I ordered some polyfuses their max ratings wouldn't be ideal for LiPo but they're great for NiMH and small switching supplies.

I found these - http://www.newark.com/littelfuse/0287001-pxcn/automative-blade-fuse-1a-32v/dp/91T2530. I'll probably go that route for the LiPo powered stuff. I have 10x 2S 500mah packs from a small flying wing, much cheaper than buying 9v batteries.