发明申请
- 专利标题: SWITCHED MODE POWER SUPPLY WITH A SIMPLIFIED START-UP SUPPLY
- 专利标题(中): 具有简化启动电源的开关模式电源
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申请号: US14112032申请日: 2011-04-15
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公开(公告)号: US20140293662A1公开(公告)日: 2014-10-02
- 发明人: Oscar Persson , Mikael Appelberg , Marko Leskovec
- 申请人: Telefonaktiebolaget L M Ericsson (publ)
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 国际申请: PCT/EP11/56012 WO 20110415
- 主分类号: H02M3/335
- IPC分类号: H02M3/335 ; H02M1/36
摘要:
A switched mode power supply (SMPS) is disclosed in which a simple primary side controller is used to send a single pulse of energy to the secondary side to switch on an output voltage controller. The pulse is sent across the main power train and a filtering arrangement is provided on the secondary side to minimise the energy at the output of the SMPS while maximising the energy supplied to the output voltage controller. Advantageously, the SMPS is configured such that the maximum amount of energy transferred from the primary side to the secondary side during a start-up operation is inherently limited. Protection against short circuit conditions and malfunctions is therefore provided without requiring complicated circuitry.