Title:
AUXILIARY CIRCUIT FOR POWER SUPPLY HAVING POWER MANAGEMENT CHIP
Document Type and Number:
WIPO Patent Application WO/2017/156839
Kind Code:
A1
Abstract:
An auxiliary circuit (160) for a power supply having a power management chip(160), wherein, the auxiliary circuit comprises a sensing circuit (110), a signal generation circuit (120), an RC circuit (130) and a switch (140); the sensing circuit (110) is used for generating an input signal; the signal generation circuit (120) is used for generating, according to the input signal generated by the sensing circuit (110), a control signal for controlling the switch (140) to be switched on or off; the switch (140) responds with on or off according to the control signal; and when the switch (140) is switched on, the switch (140) enables the power management chip (160), the RC circuit (130) and the ground (150) to connect in serious. According to the auxiliary circuit, the problem that the work efficiency of the power management chip (160) is reduced due to large switching loss of the field effect tube in the power management chip (160) when the power management chip (160) is connected with one RC circuit (130) in series to the ground (150) can be effectively solved.
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Inventors:
CAO DAN (CN)
Application Number:
PCT/CN2016/081201
Publication Date:
September 21, 2017
Filing Date:
May 06, 2016
Export Citation:
Assignee:
SHENZHEN CHINA STAR OPTOELECT (CN)
International Classes:
H02M1/44
Foreign References:
| CN105262057A | 2016-01-20 | |||
| CN103516187A | 2014-01-15 | |||
| CN103872887A | 2014-06-18 | |||
| CN105119233A | 2015-12-02 | |||
| US20150130436A1 | 2015-05-14 |
Attorney, Agent or Firm:
MING & YUE INTELLECTUAL PROPERTY LAW FIRM (CN)
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