Patent ID: 9136761
Filing Date: 2015-09-15
Classification: H01L,H02M

Abstract:
1. A power supply device comprising: a printed circuit board; an output power supply node configured to couple with a load; a plurality of semiconductor devices configured to drive the load; a plurality of inductors each of which are coupled to the output power supply node and one of the plurality of semiconductor devices, respectively; an error bus coupled to the plurality of semiconductor devices; a microcontroller configured to provide a plurality of first control signals to the plurality of semiconductor devices; and an error amplifier configured to output a common error amplifier signal to each of the plurality of semiconductor devices via the error bus, the common error amplifier signal being generated based on a voltage of the output power supply node, wherein the microcontroller and the error amplifier are formed in a first semiconductor chip disposed over the printed circuit board, wherein each of the semiconductor devices is formed in a second semiconductor chip disposed over the printed circuit board, and wherein each of the plurality of the semiconductor devices respectively comprises: