Patent attributes
Disclosed is a capacitor charging module, comprises: a power switch; a power delivery device controlled by the power switch, for providing a charging current to the output capacitor according to a voltage source; a voltage divider for providing a feedback voltage according to the voltage on the output capacitor; a control circuit, for controlling on/off operation of the power switch according to the feedback voltage value, wherein the control circuit turns off the power switch when the voltage level on the output capacitor is at or above the pre-determined value; a first rectifier component, for preventing the feedback voltage being a negative voltage during on periods of the power switch; and a second rectifier component, for preventing an leakage current flowing from the output capacitor to the power delivery device.
