A two-stage cascaded DC to DC converter with isolate device

• Main Author: TAI, YU-KUN
• Format: Patent
• Language: Chinese; English
• Published: 01.10.2010
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

This invention is a two-stage cascaded DC to DC converter with isolated device, which is suitable in receives an input d.c. voltage and then converts the d.c. voltage, under a specified condition, to a load in output. The two-stage cascaded DC to DC converter with isolated device consists of three units: one is a unit for stabilization, as the first stage of regulated and boosted voltages, and is connected in parallel with the source of input voltage; another one is a unit for isolation, as the second stage of energy and signal transfer with isolation; and the other one is a control unit, in which both of pulse width modulation (PWM) and phase-shifting modulation are included for receiving the output voltage. To use the value of output voltage, which is taken by the control unit of pulse width modulation (PWM) and phase-shifting modulation, as a base in controlling the first stage of regulated and boosted voltages in order to control the input voltage at the second stage of energy transfer with isolation, so