What kind of charger IC

Thread Starter

robotDR

Joined Mar 17, 2020
60
Im going to have an ~18v LiPo or LiFePo battery pack.
Charging from USB so I’ll need a boost step up charger like MP2639AGR-Z (pack voltage too high for this chip). Any recommendations on part number? Currently my research says I’ll need to design a separate boost converter and get a step down charger IC.

what if I just used a boost regulator and put 20 volts on the battery pack? Wouldn’t that charge and the packs onboard circuitry would protect it?
 

LowQCab

Joined Nov 6, 2012
2,506
Do You know for a fact that the "BMS" will regulate Charging Voltage and Current ?
A properly designed Charger is always a good idea,
but how You generate enough Voltage to enable proper operation of the Charger is up for discussion.

Lithium-Based-Batteries REQUIRE specific limitations on both Charging, and Discharging.
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