The utility model relates to a large-current small-size overhead
inductor structure which comprises a
magnetic core, a coil and a supporting artificial foot. The
magnetic core is made of an EE type or ER type distributed air gap
alloy material and has excellent anti-saturation performance; the coil is of a spiral structure formed by winding a flat wire and is embedded in a center groove of the
magnetic core. The supporting artificial feet are located below the magnetic core, the magnetic core and the coil are lifted to be overhead, the overhead height is larger than 1.5 mm, a cavity is formed between the magnetic core and the PCB substrate, and components such as resistors and capacitors can be arranged at the bottom conveniently. According to the utility model, through the overhead design, the space
utilization rate of the PCB is obviously improved, the board distribution area is reduced, the large-current flow capacity and the high saturation resistance are realized, the overall height is less than 10mm, and the antenna is suitable for a power supply module, a high-frequency filter and a DC-
DC converter in a high-density
circuit design. According to the utility model, an automatic
chip mounting technology is supported, a heat
radiation pad can be installed on the top to optimize
heat management performance, and the LED
chip is suitable for small-size and high-power-density electronic products.