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US09282605B2 Driver circuit for at least one load and method of operating the same 有权
用于至少一个负载的驱动电路及其操作方法

  • Patent Title: Driver circuit for at least one load and method of operating the same
  • Patent Title (中): 用于至少一个负载的驱动电路及其操作方法
  • Application No.: US14376253
    Application Date: 2013-02-08
  • Publication No.: US09282605B2
    Publication Date: 2016-03-08
  • Inventor: Bing Lai
  • Applicant: KONINKLIJKE PHILIPS N.V.
  • Applicant Address: NL Eindhoven
  • Assignee: KONINKLIJKE PHILIPS N.V.
  • Current Assignee: KONINKLIJKE PHILIPS N.V.
  • Current Assignee Address: NL Eindhoven
  • Priority: CNPCT/CN2012/071003 20120210
  • International Application: PCT/IB2013/051040 WO 20130208
  • International Announcement: WO2013/118084 WO 20130815
  • Main IPC: H05B33/08
  • IPC: H05B33/08
Driver circuit for at least one load and method of operating the same
Abstract:
A driver circuit (1) for operating at least one load, such as a LED unit (7) is provided, comprising a switching controller (5) configured to at least control a switching device (13) between the discharging and charging mode of a storage inductor, in dependence on the inductor current (Is) and to control a duty cycle of the switching operation in dependence on at least one compensation signal, the compensation signal corresponding to either the input (VIN) voltage or the output voltage (VOUT), so that in case of a variation of the input (VIN) or output voltage (VOUT), the average output current, provided to the load, is maintained substantially constant.
Abstract(Chinese):

提供了用于操作诸如LED单元（7）的至少一个负载的驱动器电路（1），其包括开关控制器（5），其被配置为至少控制在放电和充电模式之间的开关装置（13） 存储电感器，根据电感器电流（Is），并根据至少一个补偿信号控制开关操作的占空比，补偿信号对应于输入（VIN）电压或输出电压（VOUT） ，因此在输入（VIN）或输出电压（VOUT）的变化的情况下，提供给负载的平均输出电流保持基本恒定。

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