公开(公告)号：US07239119B2

公开(公告)日：2007-07-03

申请号：US10981959

申请日：2004-11-05

申请人： Stefan Bäurle ,  William M. Polivka ,  David Michael Hugh Matthews

发明人： Stefan Bäurle ,  William M. Polivka ,  David Michael Hugh Matthews

IPC分类号： G05F1/40 ,  H02H7/122

CPC分类号： H02M3/33507

摘要： Various techniques directed to providing temporary peak power from a switching regulator are disclosed. In one aspect, a switching regulator includes a switch that is to be coupled between a power supply input and an energy transfer element of the power supply. A controller is coupled to be responsive to a feedback signal to be received from an output of the power supply. The controller is coupled to switch the switch in response to the feedback signal to regulate the output of the power supply. An oscillator is coupled to provide an oscillating signal to the controller to determine a maximum switching frequency of the switch. The oscillating signal is coupled to oscillate at a first frequency under a first moderate load condition at the power supply output. The oscillating signal is coupled to oscillate at a second frequency under a second peak load condition at the power supply output.