Back to results
US 7,009,855 B2Granted
Synchronous rectifier circuit
AssigneeMinebea Co., Ltd.
InventorHelmut Mueller
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMinebea Co., Ltd.
InventorHelmut Mueller
Estimating the term…
A synchronous rectifier circuit, comprising a power transformer which has a primary side, including first and second primary winding sections, and a secondary side, including first and second secondary winding sections, a rectifier circuit at the secondary side of the power transformer, which rectifier circuit comprises first and second MOSFETs associated with the first and second secondary winding sections, respectively, first and second current transforming means associated with the first and second secondary winding sections, respectively, and first and second drive circuits for the first and second MOSFETs, respectively, each current transforming means generating first and second currents which are dependent on the current of the associated secondary winding section of the power transformer, and each drive circuit comprising first and second branches to receive the first and second currents, respectively, generated by the current transforming means, and the first branch comprising a diode and a transconductance choke, and the second branch comprising a diode.
A synchronous rectifier circuit, comprising:
The synchronous rectifier circuit as claimed in claim 10, wherein the switch winding (52a) is disposed in the first branch and the reset winding (52b) is disposed in a reset branch.
A power transformer (12) comprising a primary side (18a) and a secondary side (18b) for providing a current output(i0);
Dependencies are inferred from the claim text.