Voltage conversion module

A voltage converter module formed of multi-layers with resin composite, the module comprising:

• (a) a first connecting layer of which terminal-surface includes a connecting terminal;
• (b) a first inner wiring layer being overlaid on an opposite face to the terminal-surface of the first connecting layer and having a wiring pattern to be electrically coupled to the connecting terminal through a first via-hole conductor included in said first connecting layer;
• (c) a component built-in layer incorporating a voltage converter IC and a peripheral component, and being overlaid on said first inner wiring layer, and including a second via-hole conductor;
• (d) a second inner wiring layer being overlaid on said component built-in layer, and being electrically coupled to the wiring pattern of said first inner wiring layer through the second via-hole conductor, and having a wiring pattern to be electrically coupled to the voltage converter IC;
• (e) a second connecting layer being overlaid on said second wiring layer and including a third via-hole conductor;
• (f) a capacitor-mounted layer being overlaid on said second connecting layer, and being electrically coupled to the wiring pattern of said second inner wiring layer through the third via-hole conductor, and having a wiring pattern where a first capacitor and a second capacitor are electrically coupled to each other;
• and
• (g) a capacitor built-in layer being overlaid on said capacitor-mounted layer, and incorporating the first capacitor and the second capacitor,
• wherein the module includes a circuit, in which the first capacitor and the second capacitor are coupled to each other, between a terminal of the voltage converter IC and a grounding,
• wherein the terminal of the voltage converter IC is electrically coupled to a terminal of the peripheral component through the wiring pattern of said second inner wiring layer,
• wherein the voltage converter IC, the first capacitor and the second capacitor are coupled to each other through the wiring pattern of said second inner wiring layer, the third via-hole conductor and the wiring pattern of said capacitor-mounted layer, and
• wherein the connecting terminal is electrically coupled to a connecting terminal, which is coupled to an external circuit, of the circuit through the first via-hole conductor and the wiring pattern of said first inner wiring layer.