Patent ID: 9161433
Filing Date: 2015-10-13
Classification: H01L,H05K

Abstract:
1. A power supply control circuit module comprising: a power supply control IC element that controls a power supply output based on a control signal; a multilayer body including a plurality of dielectric layers stacked on each other, on which the power supply control IC element and circuit elements are mounted, the circuit elements being connected to the power supply control IC element; first inner-layer electrodes located between a mounting area of the power supply control IC element and a periphery of a surface of the multilayer body; second inner-layer electrodes that transmit the control signal for the power supply control IC element; and a shielding member including an insulating resin and a metal cover, arranged to shield the surface of the multilayer body, and having a thermal conductivity higher than a thermal conductivity of air; wherein connection circuit electrodes are defined by the first inner-layer electrodes; the first inner-layer electrodes and the second inner-layer electrodes are provided in different layers of the multilayer body; the first inner-layer electrodes are provided in a layer that is closer to the surface of the multilayer body than a layer where the second inner-layer electrodes are provided; the first inner-layer electrodes extend along a periphery of the multilayer body; and the metal cover directly contacts side surfaces of the multilayer body which extend perpendicular to the surface of the multilayer body; and the power supply control IC element is a DC-DC converter switching IC element, and of the circuit elements, an output capacitor is connected to an external ground connection terminal at one end thereof through a conductive via hole, the output capacitor being connected to an output side of the DC-DC converter switching IC element, the external ground connection terminal being one of external connection terminals on a back surface of the multilayer body.