Rosenberg, Klein & Lee
Apparatus and method for constant delta current control in a capacitor charger
In a capacitor charger, a transformer has a primary winding connected between an input voltage and a switch for generating a primary current flowing through the primary winding by switching the switch to thereby induce a secondary current flowing through a secondary winding of the transformer and a secondary voltage tapered from the secondary winding, a control apparatus and method adjusts the on-time period for the switch in response to the input voltage. The charging time and charging current are independent of the input voltage, and there is no power loss resulted from current sense to the primary current.
Richtek Technology Corp.
H H H
H05B H02M H02M
inventional inventional additional
Chun-Yen Chung-Lung Jing-Meng Kwan-Jen
Huang Pai Liu Chu