Invention Grant
US09030119B2 LED string driver arrangement with non-dissipative current balancer 有权
LED串驱动器配置与非耗散电流平衡器

  • Patent Title: LED string driver arrangement with non-dissipative current balancer
  • Patent Title (中): LED串驱动器配置与非耗散电流平衡器
  • Application No.: US13175899
    Application Date: 2011-07-04
  • Publication No.: US09030119B2
    Publication Date: 2015-05-12
  • Inventor: Xiaoping Jin
  • Applicant: Xiaoping Jin
  • Applicant Address: US CA Aliso Viejo
  • Assignee: Microsemi Corporation
  • Current Assignee: Microsemi Corporation
  • Current Assignee Address: US CA Aliso Viejo
  • Agent Simon Kahn
  • Main IPC: H05B41/24
  • IPC: H05B41/24 H05B33/08
LED string driver arrangement with non-dissipative current balancer
Abstract:
A solid state lighting driver arrangement exhibiting a plurality of LED strings receiving power from a single power source, the single power source providing a discontinuous current, wherein a plurality of first windings are provided, each associated with a particular LED string and coupled to provide current balancing between the various LED strings. The discontinuous current resets the windings during the off time or during a reversal period. In one particular embodiment, a second winding is magnetically coupled to each of the first windings, and the second windings are connected in a closed in-phase loop. In another particular embodiment, at least two of the first windings are magnetically coupled to each other, thus ensuring a balance between current in each LED string.
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