Invention Grant
- Patent Title: Dimming drive circuit and illumination apparatus including the dimming drive circuit
- Patent Title (中): 调光驱动电路和包括调光驱动电路的照明装置
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Application No.: US14684464Application Date: 2015-04-13
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Publication No.: US09565729B2Publication Date: 2017-02-07
- Inventor: Haibin Xiao , YuLei Dong
- Applicant: OSRAM GmbH
- Applicant Address: DE Munich
- Assignee: OSRAM GMBH
- Current Assignee: OSRAM GMBH
- Current Assignee Address: DE Munich
- Agency: Viering, Jentschura & Partner mbB
- Priority: CN201410148825 20140414
- Main IPC: H05B39/02
- IPC: H05B39/02 ; H05B33/08 ; H05B37/02

Abstract:
Various embodiments may relate to a dimming drive circuit for an illumination apparatus and an illumination apparatus including the dimming drive circuit, wherein the dimming drive circuit includes a filter circuit unit and a bleeder circuit unit, a main control module connected to the filter circuit unit and the bleeder circuit unit, respectively, and an auxiliary control module configured to reduce the current of the bleeder circuit unit and/or to switch off the bleeder circuit unit according to a characteristic input current of the dimming drive circuit prior to switch-off of the bleeder circuit unit by the main control module in a first operation state of the dimming drive circuit, and to prevent the filter circuit unit from releasing electrical energy via the bleeder circuit unit in a second operation state of the dimming drive circuit.
Public/Granted literature
- US20150296583A1 DIMMING DRIVE CIRCUIT AND ILLUMINATION APPARATUS INCLUDING THE DIMMING DRIVE CIRCUIT Public/Granted day:2015-10-15
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