INVERTER DRIVING APPARATUS AND CONTROL METHOD THEREOF, REFRIGERATOR

摘要

An inverter driving apparatus, a control method thereof, and a refrigerator are provided to minimize an inrush current generated in a bootstrap capacitor by turning on a lower switching device with a pulse width modulation method. A power supply unit(10) supplies the external power to a switching unit(20). The switching unit includes an upper switching device(21) and a lower switching device(23). An upper switching driving unit is charged with the power from the power supply unit. The upper switching driving unit drives the upper switching device. The upper switching driving unit includes a bootstrap circuit with a capacitor. The lower switching driving unit operates the lower switching device. A controller(50) applies the driving signal to the upper switching driving unit. When the upper switching driving unit is charged with the power from the power supply unit, the controller controls the lower switching driving unit to turn on or off the lower switching device with the PWM(Pulse Width Modulation) method.