Abstract: 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.

Abstract: 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.

Abstract: A lamp driving system includes a transformer, a first impedance network coupled in series to a second impedance network, and a first load coupled in series to a second load. The second impedance network has a larger impedance value with respect to the first impedance network and the first and second impedance networks coupled in parallel to a secondary side of the transformer. The first load is coupled in parallel to the first impedance network and a series of the second load and a blocking impedance network is coupled in parallel to the second impedance network, wherein the larger impedance value of the second impedance network compared to the first impedance network causes the second load to operate before the first load, and the blocking impedance network is adjusted to achieve the current balance of the first load and the second load by changing an impedance value of the blocking impedance network.