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Title:
DRIVER WITH CHARGE PUMP CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2018/166501
Kind Code:
A1
Abstract:
Disclosed in the present application is a driver for lighting means, preferably light emitting diodes, comprising a charge pump circuit, which is improved based on a common first-stage charge pump circuit. A fifth capacitor is added to connect a power source input end of the charge pump circuit to an LLC or LC circuit, a compensation current is provided for the power source input end using a resonant current generated by a resonant inductance in the LLC or LC circuit, an input angle of a power input current is widened and the input current is smoothed, so as to improve the problems, that a total harmonic distortion is larger and the harmonic does not satisfy the IEC standard, of a single-stage charge pump circuit where the output range is larger. Moreover, compared with a second-stage charge pump circuit that can achieve the equivalent PFC effect, the charge pump circuit disclosed in the present application omits three diode devices and the corresponding connecting wires thereof, and thus has the advantages of a lower cost and smaller circuit volume.

Inventors:
MAO QIUXIANG (CN)
ZHONG GUOJI (CN)
CHEN QINGHUI (CN)
GAO RUIPENG (CN)
Application Number:
PCT/CN2018/079172
Publication Date:
September 20, 2018
Filing Date:
March 15, 2018
Export Citation:
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Assignee:
TRIDONIC GMBH & CO KG (AT)
MAO QIUXIANG (CN)
International Classes:
H02M1/12
Domestic Patent References:
WO2018137240A12018-08-02
WO2018137240A12018-08-02
WO2015143612A12015-10-01
WO2018137240A12018-08-02
Foreign References:
CN102088810A2011-06-08
CN1682576A2005-10-12
EP2490511A12012-08-22
US20120033451A12012-02-09
DE102009047632A12011-06-09
EP3574716A12019-12-04
Other References:
"PPFC Improvements", REDISEM POWERPOINT PRESENTATION, February 2017 (2017-02-01), XP055704838
Attorney, Agent or Firm:
WAN HUI DA INTELLECTUAL PROPERTY AGENCY (CN)
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