公开(公告)号：US20140253056A1

公开(公告)日：2014-09-11

申请号：US13792457

申请日：2013-03-11

Applicant: CREE, INC.

Inventor： Yuequan Hu ,  Daniel Pope

IPC: H02M3/158

CPC classification number: H02M3/158 ,  H02M1/4258 ,  H02M3/157 ,  H02M2001/007 ,  H05B33/0815 ,  H05B33/0827 ,  Y02B20/347 ,  Y02B70/126

Abstract: A power supply circuit includes a pre-regulator configured to receive an input voltage and to generate an output voltage, and a switching current regulator coupled to an output of the pre-regulator and configured to regulate a level of current supplied to an output load. The switching current regulator is controlled by a switching signal having a duty cycle. The circuit further includes a controller that generates the switching signal. The controller monitors the duty cycle of the switching signal and controls a level of the output voltage generated by the pre-regulator by providing a control signal in response to the duty cycle of the switching signal.

Abstract translation: 电源电路包括被配置为接收输入电压并产生输出电压的预调节器，以及耦合到预调节器的输出并被配置为调节提供给输出负载的电流电平的开关电流调节器。 开关电流调节器由具有占空比的开关信号控制。 电路还包括产生开关信号的控制器。 控制器监视开关信号的占空比，并通过响应于开关信号的占空比提供控制信号来控制由预调节器产生的输出电压的电平。

公开(公告)号：US20140252965A1

公开(公告)日：2014-09-11

申请号：US13945255

申请日：2013-07-18

Applicant: Cree, Inc.

Inventor： Daniel Pope ,  Yuequan Hu

IPC: H05B37/02 ,  H02M3/04

CPC classification number: H02M3/04 ,  H05B33/0818 ,  H05B33/0827 ,  Y02B20/346

Abstract: A method of operating a switched mode power supply circuit can be provided by determining an error in a control signal for the switched mode power supply circuit. The error can be compared to an error threshold value to provide a filtering selection. The error can be adaptively filtered of based on the filtering selection to provide a selected filtering and the error can be filtered using the selected filtering.

Abstract translation: 可以通过确定开关模式电源电路的控制信号中的误差来提供操作开关模式电源电路的方法。 可以将错误与错误阈值进行比较以提供过滤选择。 可以根据过滤选择自适应地过滤错误，以提供所选择的过滤，并且可以使用所选过滤来过滤错误。