POWER CONVERTER USING ENERGY STORED IN LEAKAGE INDUCTANCE OF TRANSFORMER TO POWER SWITCH CONTROLLER

摘要

A power converter using energy stored in the leakage inductance of a transformer (T1) to power a switch controller (100). The power converter includes the transformer (T1) that is coupled to or decoupled from a power source by a switch (Q1) controlled by the switch controller (100). The transformer (T1) includes a first primary winding (P1) coupled to a secondary winding (S1). The energy stored in the leakage inductance of the first primary winding (P1) is received by a second primary winding (P2). The energy received by the second primary winding (P2) is provided to the switch controller (100) to power the switch controller (100). The second primary winding (P2) is wound adjacent to the first primary winding (P1) to receive more energy from the first primary winding (P1).