Buck Converter (Buck)

Buck Converter (Buck)

The switching Buck Converter (Buck) provides high-efficiency, high-elasticity, high-voltage drop-down, and heavy-duty buck conversion.

Most Buck Converters (Buck) contain a bridge MOSFET and a synchronous rectifier MOSFET, which generates a stable average output voltage based on the duty cycle switching circuit switch. Its switching waveform is then filtered through an external LC filter.

Because the MOSFET is switched, its power consumption is very low. and the duty ratio control mode can meet the demand of high voltage drop ratio. The RDS (on) of the internal MOSFET roughly determines the load capacity of the buck converter, and the rated voltage of the MOSFET determines its maximum output voltage. The switching frequency and the external LC filter determine the ripple voltage at the output end.

A buck converter with a high switching frequency can be paired with a smaller filter, but the switching results in a high loss of wear. Some buck converters have pulse skipping mode, PSM, which reduces the switching frequency at light load, thus improving the efficiency at light load. This is important for applications that have power-saving requirements when standby. The special buck converters of the ACOT™ have excellent transient response capability and are ideally suited for use in fast load transient applications such as DDR, SoC, FPGA or ASIC power supply.

Buck Converter (Buck)