| As electronic technology continues to progress, the miniaturization is the goal ofthe entire industry. The power module which all electronic system has is no exceptions.In switching power supply, the magnetic components accounted for30%to40%of theweight of the entire switch power supply. Traditional switching power supplies usuallyuse PCB as substrates. Due to the large size of magnetic devices, PCB substrates cannot meet the demands for further miniaturization.There are two ways to achieve the miniaturization in magnetic components: one isto increase the frequency of the SPS; another is to ues Low Temperature Co-fired Ce-ramic technology to embedded magnetic components to reduce the height and weightThis article is to realize a DC-DC converter using LTCC substrate within embed-ded inductor. First, theory of SPS is studied to design a DC-DC converter on PCB toverify the fuction. LTCC inductor magnetic saturation is analyzed. HFSS software isused to establish the initial inductance and the structure. And then use Maxwell soft-ware for nonlinear simulation analysis. Six kinds of different structures of inductor aredesigned to reduce the volume and to avoid saturation. Relying on the LTCC productionline of SIP experimental center in Sichuan Province, the DC-DC converter using LTCCsubstrate within embedded inductor is realized. The DC-DC converter using LTCC sub-strate within embedded inductor in this paper is10mm×10mm×4mm, a height of onlyone thirds of the PCB module, which approves the miniaturization of the SPS moduleusing LTCC technology. |
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