Lackenbach Siegel, LLP
Switching power converting apparatus, switching controller for the same, and method of controlling a bipolar junction transistor of the same
A switching power converting apparatus includes a coil unit, a bipolar junction transistor (BJT) controlling power transfer through the coil unit, and a current sensing resistor sensing a current flowing through the BJT so as to produce a sensed voltage thereacross. A switching controller includes a current source supplying a first current, a current generating module generating, based on an input voltage associated with the sensed voltage, a second current, which is proportional to the current flowing through the BJT, a multiplexing module selecting one of the first and second currents as an output current, and a driving module outputting, based on the output current, a driving current, which is proportional to the output current, to the BJT to thereby conduct the BJT.
RICHTEK TECHNOLOGY CORP.
H H H H Y
H02M H02M H02M H02M Y02B
additional additional additional inventional additional
Chien-Fu Yung-Chih Jyun-Che Jiun-Hung Isaac Y. Yu-Chang Jung-Pei
Tang Lai Ho Pan Chen Chen Cheng