SUB-POWER CONTROL APPARATUS OF A DC POWER CONVERTER, CAPABLE OF SUPPLYING A CONTROL IC POWER STABLY

摘要

PURPOSE: A sub-power control apparatus of a dc power converter is provided to prevent heat due to a switching device and a resistor a voltage regulator by blocking power from the voltage regulator to a controller.;CONSTITUTION: A sub-power control apparatus of a dc power converter is composed of a voltage regulator(120), a controller(110), a main power supply unit(150), an auxiliary power supply unit(130), and a voltage regulator switching unit(140). The voltage regulator converts input power into a driving value of a controller and supplies it to the controller. The controller is driven by driving power of the voltage regulator, and the main power supply unit includes a main power-trans(151) applying a current by the controller. The auxiliary power part outputs a main part output power(+VO, -VO), and it outputs auxiliary power to the controller and the voltage regulator switching.;COPYRIGHT KIPO 2010