Voltage regulator and current sense for LiPo batteries

[lpcware]

Content originally posted in LPCWare by jhd on Tue Dec 01 17:50:25 MST 2015
Hello,

Sorry if this post is not here, I did not know where to put it.

I need to build a voltage regulator and monitor current and voltage sense for LiPo batteries. 2S to 8S or 10S if is possible.

With this features:

V Input: from 7,4V up-to 50-60V
Current max.: 175A

V Out: 5V
Current Out: about 3A

And a 5V to 3,3V converter to supply providing of LPC54102, Bosch sensors, and other components in the pcb (all works to 3,3V), but other external periphericals works to 5V.


Best regards.

[lpcware]

Content originally posted in LPCWare by IanB on Tue Feb 09 15:38:24 MST 2016
Have a look at these

http://www.allegromicro.com/en/Products/Current-Sensor-ICs/Fifty-To-Two-Hundred-Amp-Integrated-Condu...

for your current sensors.

For your 3A/5V supply, a SEPIC is probably the best bet - especially as it fails safe if the pass-transistor goes short. (Don't want a battery that can give 175A @ 50V connected to your microprocessor!). You can make it out of something like a NCP1216.

For the 3.3V supply a LDO regulator such as LD1117 off your 5V supply. Not quite so efficient as a switched-mode but a much quieter output.