Patent ID: 8760080
Filing Date: 2014-06-24
Classification: G09G,H02M,H05B

Abstract:
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.