Improvement of Switching Loss in DC-DC Quadratic Boost Converter

摘要

In the converter for performing a switching operation for generating and outputting a first DC power supplied from the outside as a second DC power according to the present invention, a MOSFET (SW), an output stage capacitor (C O ), a first capacitor (C 1 ) , output terminal resistance (R O ), output terminal diode ( DO ), a first diode (D 1 ), a second diode (D 2 ), a secondary consisting of a first inductor (L 1 ) and a second inductor (L 2 ) step-up converter 100; The charge pump circuit 200 including the second capacitor C 2 , the third capacitor C 3 , the third diode D 3 , and the fourth diode D 4 , and the charge pumping of the charge pump circuit 200 . It is characterized in that it includes a third inductor (L 3 ) connected in series to the path. In addition, the control method of the DC-DC converter with improved switching power loss includes a second capacitor (C 2 ), a third capacitor (C 3 ) and a third diode (D 3 ), a fourth diode in the secondary step-up converter. (D 4 ) As a method of improving the switching loss of the converter configured to further include, the MOSFET (SW), the fourth diode (D 4 ) is turned on, the first diode (D 1 ), the third diode (D 3 ) and output stage diode (D O ) are turned off to turn off Mode 1 (S100) and MOSFET (SW), second diode (D 2 ), and fourth diode (D 4 ) are turned off The first diode (D 1 ) and the third diode (D 3 ) are turned on and the voltage (V C1) applied to the first capacitor (C 1 ) and the voltage applied to the output terminal resistor (R O ) (V O ) It is characterized in that it includes a Mode 2 step (S200) of transferring energy to the