Power supply device and power supply method

• Main Authors: Yang, Shun-Hsu, Wang, Lyu-Jhih
• Format: Patent
• Language: English
• Published: 20.11.2018
• 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; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS,e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USERAPPLICATIONS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A power supply device includes a first voltage conversion unit and a second voltage conversion unit. The first voltage conversion unit performs a step-down operation according to a first voltage to output a first output voltage via a first connection interface. The second voltage conversion unit includes a first rectifying circuit and a power delivery circuit. The first rectifying circuit performs a first rectifying operation based on load information of a load and the first voltage to generate a second voltage. The power delivery circuit determines, according to the load information and the second voltage, whether to output the second voltage as a second output voltage to the load via a second connection interface. The first connection interface is different from the second connection interface, and the second output voltage is higher than or equal to the first output voltage.