Circuit and method for converting wide input voltage into high-power low output voltage

Abstract

The invention belongs to the technical field of electronic equipment, and discloses a circuit for converting wide input voltage into high-power low output voltage. The circuit includes a 9-60V power input end, a DCDC power module, a circuit control unit, an MOS pipe and a board-grade DCDC chip, wherein the input end of the DCDC power module is connected to the 9-60V power input end, and the output end of the DCDC power module is connected to the board-grad DCDC chip; the input end of the circuit control unit is connected to the 9-60V power input end, the enabled output end of the circuit control unit is connected to the enabled pin of the DCDC power module, and the control output end of the circuit control unit is connected to the grid electrode of the MOS pipe; the source electrode of the MOS pipe is connected to the 9-60V power input end, and the drain electrode of the MOS pipe is connected to the board-grade DCDC chip. Meanwhile, the invention also discloses a method for converting the wide input voltage into the high-power low output voltage. The circuit and method can achieve the conversion from the wide input voltage to the high-power low output voltage, meet the demands for high-power equipment, and improve power supply efficiency.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment power supply, and in particular relates to a wide voltage input-to-low-voltage high-power output circuit and method. Background technique [0002] In the current industrial site, the input voltage range of network communication equipment (such as switches, etc.) is getting wider and wider, such as requiring DC9V, DC12V, DC36V, DC60V and other input voltages. The chip operating voltage of network communication equipment is often only DC3.3V, or even lower. Converting from DC60V to 3.3V, the conversion efficiency will be very low, converting from high voltage to low voltage, the conversion efficiency will be very low, and the output power is very small, which cannot meet the requirements of high-power equipment at all. Contents of the invention [0003] The purpose of the embodiment of the present invention is to provide a wide-voltage input-to-low-voltage high-power output circuit a...

AI Technical Summary

Problems solved by technology

The chip operating voltage of network communication equipment is often only DC3.3V, or even lower

Converting from DC60V to 3.3V, the conversion efficiency will be very low, converting from high voltage to low voltage, the conversion efficiency will be very low, and the output power is very small, which cannot meet the requirements of high-power equipment at all.

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