Hello Experts,
We have existing product which works on +12V car battery voltage,we have used the TPS54329 3-A SYNCHRONOUS STEP DOWN CONVERTER switching regulator for +5V output & TLV1117-3.3 LDO for +3.3V output.We are using the GSM/GPRS module,so it will require the 2A current in burst mode.
New Requirement of Customer :
- By default device should works on +12V car battery voltage.
- If the device disconnects from car battery voltage,it should switch to back up battery(Lithium Polymer 4.2V).
Development :
I am on the way to design the device as per the customer requirement.I want to interface the battery management IC as below,(See attached pdf)
+12V Source => TPS54329 Regulator => Battery management IC => LDO TLV1117 => System Peripherals (Load)
When the +12V source disconnects from car battery,then TPS54329 outputs 0V.At that time device operates on back up battery which will be Lithium Polymer(4.2V).TPS54329 output current is 3A. Battery should have 3A input current range,Output current 3A, dynamic power path management,over voltage protection,under voltage protection.
Can some one please suggest me the right battery management IC.
Can you please suggest me the battery management IC.