SYNCHRONOUS RECTIFIER DC/DC CONVERTERS USING A CONTROLLED-COUPLING SENSE WINDING
First Claim
1. A synchronous rectifier DC/DC converter, comprising:
- a power transformer, comprising;
a core;
a primary winding wrapped around the core and receiving an input voltage of the synchronous rectifier DC/DC converter;
a secondary winding wrapped around the core and providing energy of an output current of the synchronous rectifier DC/DC converter; and
a sense winding wrapped around the core and providing a sense signal;
a first diode coupled to the secondary winding for rectifying the output current;
a first MOSFET coupled in parallel with the first diode; and
a first controller coupled to the sense winding and the first MOSFET for turning on and turning off the first MOSFET according to the sense signal.
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Accused Products
Abstract
A synchronous rectifier DC/DC converter is provided. The synchronous rectifier DC/DC converter includes a power transformer, a first diode, a first MOSFET, and a first controller. The power transformer includes a core, a primary winding, a secondary winding, and a sense winding. The primary winding is wrapped around the core and receives an input voltage of the synchronous rectifier DC/DC converter. The secondary winding is wrapped around the core and provides the energy of an output current of the synchronous rectifier DC/DC converter. The sense winding is wrapped around the core and provides a sense signal. The first diode is coupled to the secondary winding for rectifying the output current. The first MOSFET is coupled in parallel with the first diode. The first controller is coupled to the sense winding and the first MOSFET for turning on and turning off the first MOSFET according to the sense signal.
83 Citations
16 Claims
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1. A synchronous rectifier DC/DC converter, comprising:
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a power transformer, comprising; a core; a primary winding wrapped around the core and receiving an input voltage of the synchronous rectifier DC/DC converter; a secondary winding wrapped around the core and providing energy of an output current of the synchronous rectifier DC/DC converter; and a sense winding wrapped around the core and providing a sense signal; a first diode coupled to the secondary winding for rectifying the output current; a first MOSFET coupled in parallel with the first diode; and a first controller coupled to the sense winding and the first MOSFET for turning on and turning off the first MOSFET according to the sense signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification