3. TECHNICAL BRIEF
PM8058 Charging Flow (CC Charging) : 2/2
3.9.3.3 Constant Voltage Charging
PMIC support of main battery constant voltage charging is very similar to its constant current mode: the battery
MOSFET is closed and the charging pass transistor is closed-loop controlled.
But in this case, the closed-loop control regulates the voltage at VBAT to match the programmed value
(VMAXSEL). This ensures the most accurate final battery voltage – Li-ion battery
manufacturers recommend a voltage accuracy of 1% or better at the end of charge. The battery voltage is
constant (or nearly so) while the charging current decreases exponentially for the remaining charge process
To Next Page
Loading...
