POWER SUPPLY APPARATUS

A power supply apparatus (1) includes a power factor correction circuit (2), an LLC converter (3), an auxiliary conversion circuit (4), a secondary side controller (5) and a voltage tracking circuit (6). The power factor correction circuit (2) is used for converting a DC link voltage into a first vo...

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Bibliographische Detailangaben
Hauptverfasser:	Chen, I, Lai, Chien-An
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A power supply apparatus (1) includes a power factor correction circuit (2), an LLC converter (3), an auxiliary conversion circuit (4), a secondary side controller (5) and a voltage tracking circuit (6). The power factor correction circuit (2) is used for converting a DC link voltage into a first voltage. The LLC converter (3) includes a primary side circuit (30) and a secondary side circuit (31), which are coupled with each other. The primary side circuit (30) receives the first voltage. The first voltage is converted into an auxiliary voltage by the auxiliary conversion circuit (4). The voltage tracking circuit (6) detects the auxiliary voltage and issues a detection signal to the secondary side controller (5). The secondary side controller (5) tracks a ripple change of the DC link voltage and instantly generates a reverse waveform opposite to a waveform of the DC link voltage. The secondary side controller (5) controls the operations of the LLC converter (3) according to the reverse waveform.