发明名称 Hybrid multi-output power supply and regulation method thereof
摘要 The present invention relates to a hybrid multi-output power supply and regulation method thereof. In one embodiment, a power supply includes: a driving circuit that generates an error signal based on an expected driving voltage, the expected driving voltage being determined by an LED load driving current, and where the driving circuit regulates the driving current to be substantially constant and consistent with an expected driving current; a first stage voltage regulator receiving an input voltage and the error signal, and generating a first regulation voltage consistent with the expected driving voltage, where the first regulation voltage supplies power to the driving circuit, and provides driving voltage for the LED load, and where the first regulation voltage provides sufficient expected driving current; and a second stage voltage regulator that receives the first regulation voltage, and generates a substantially constant second regulation voltage to supply power to a first load.
申请公布号 US8760080(B2) 申请公布日期 2014.06.24
申请号 US201213527805 申请日期 2012.06.20
申请人 Silergy Semiconductor Technology (Hangzhou) Ltd. 发明人 Yu Tzu Ming
分类号 H05B37/02 主分类号 H05B37/02
代理机构 代理人 Stephens, Jr. Michael C.
主权项 1. A hybrid multi-output power supply, comprising: a) a driving circuit configured to generate an error signal in accordance with an expected driving voltage, wherein said expected driving voltage is determined by a driving current of a light-emitting diode (LED) load, and wherein said driving circuit is configured to regulate said driving current to be substantially constant and consistent with an expected driving current; b) a first stage voltage regulator configured to receive an input voltage and said error signal, and to generate a first regulation voltage consistent with said expected driving voltage, wherein said first regulation voltage is configured to supply power to said driving circuit, and to provide driving voltage for said LED load, and wherein said first regulation voltage is sufficient to provide said expected driving current; c) a second stage voltage regulator coupled to said first stage voltage regulator, and configured to receive said first regulation voltage, and to generate a substantially constant second regulation voltage to supply power to a first load; and d) an enabling circuit configured to provide an enabling signal for said driving circuit, wherein said first regulation voltage is generated by said first stage voltage regulator in accordance with said error signal when said enabling signal is active, and wherein said first regulation voltage is maintained at a substantially fixed value when said enabling signal is inactive.
地址 Hangzhou CN