Apparatuses and related methods for charging control of a switching voltage regulator

摘要

Charging systems and related methods are disclosed for switching voltage regulators. A charging controller may be configured to generate a control signal indicating a first level of an output current generated by a switching voltage regulator for charging an energy storage device, determine that an output voltage exceeded a predetermined threshold, and generate the control signal indicating a new level of the output current that is reduced from the first level. A method of controlling charging of an energy storage device may comprise monitoring an output voltage charging an energy storage device, comparing a reference signal and a current sense signal to generate a PWM control signal that determines an output current for a switching voltage regulator generating the output voltage, and decrementing the reference signal in response to the output voltage exceeding a predetermined level for a maximum charging voltage for the energy storage device.

主权项

1. A charging system, comprising:
a charging controller configured to:
generate a control signal indicating a first level of an output current generated by a switching voltage regulator for charging an energy storage device;determine that an output voltage exceeded a predetermined threshold; andgenerate the control signal indicating a new level of the output current that is reduced from the first level; a driver coupled with the charging controller, the driver configured to receive the control signals and generate a plurality of switching control signals; and valley shut off circuitry operably coupled with an output latch configured to transmit the control signals to the driver, wherein the valley shut off circuitry is configured to shut off the control signal when the output current is discontinuous.