| 摘要 |
PURPOSE: A gate drive power supply circuit for an inverter is provided to reduce manufacturing costs of a motor driving system by removing an additional DC-DC converter for sensing a main DC voltage from the motor driving system. CONSTITUTION: A DC-DC converter(211) includes an input terminal and a plurality of output terminals and converts the input voltage into a plurality of output voltages with different levels. A clamping unit(221) is connected to one among a plurality of output terminals. If the input voltage exceeds a specific level, the clamping unit outputs the voltage of the specific level. A regulator(241) converts the voltage from the clamping unit to the voltage of the constant level. |
