A flyback converter has an input 12 for connection to a power supply 122 and an output 16 for connection to a load 18. The flyback converter includes an inductor, or flyback transformer, 11 with primary and secondary windings. A primary switch device 15 is connected in series with the primary winding and in parallel with the input. An output device 161 is connected in series with the secondary winding to block current of a first polarity and to pass current of a second polarity from the secondary winding. A blocking circuit 19 is connected between the secondary winding and the output diode, and includes a blocking circuit diode 191 to pass electrical current of the first polarity from the secondary winding to one or more circulating components of the blocking circuit such that the associated voltage is blocked from the output diode, and to block current of the second polarity from the secondary winding. The converter may include a snubber circuit 13. The output diode and blocking diode may be Schottky diodes. The load may be a battery, particularly for an electric vehicle, and the converter used in a battery charging circuit.
A flyback converter
2023-06-07
Patent
Electronic Resource
English
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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