公开(公告)号：US07589983B1

公开(公告)日：2009-09-15

申请号：US11557953

申请日：2006-11-08

申请人： Allan Ming-Lun Lin ,  Mark Dean Eason ,  Mark Robert Muegge

发明人： Allan Ming-Lun Lin ,  Mark Dean Eason ,  Mark Robert Muegge

IPC分类号： H02M3/335 ,  H03H1/00

CPC分类号： H02M3/33515

摘要： A power converter includes a switch controller having a dual output digital-to-analog converter for generating a variable reference voltage and a knee voltage offset from the reference voltage by a predetermined voltage. The variable reference voltage is generated based on a reconstructed representation of output voltage of the power converter in a previous switching cycle. Comparators compare the variable reference voltage and the variable knee voltage to a sensed output of the power converter in a first switching cycle. A digital logic of the switch controller receives signals from the comparators and determines a pulse signal for controlling an on-time and an off time of a switch in a second switching cycle.

摘要翻译： 电力转换器包括具有双输出数/模转换器的开关控制器，用于从参考电压产生可变参考电压和拐点电压偏移预定电压。 可变参考电压是基于在先前的切换周期中的功率转换器的输出电压的重构表示而产生的。 比较器在第一开关周期中将可变参考电压和可变拐点电压与功率转换器的检测输出进行比较。 开关控制器的数字逻辑从比较器接收信号，并确定用于在第二开关周期中控制开关的导通时间和关断时间的脉冲信号。