Forward converter with synchronous rectifier and reverse current control
Patent 7224590 Issued on May 29, 2007. Estimated Expiration Date: 
September 30, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 30, 2024. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesSynchronous rectifier that is impervious to reverse feed General self-driven synchronous rectification scheme for synchronous rectifiers having a floating gate DC-DC converter Synchronous rectifier controller to eliminate reverse current flow in a DC/DC converter output Patent #: 6618274 AbstractA control circuit for use in a power converter has a synchronous rectifier for producing substantially direct current, including a sensor for sensing a characteristic of the power converter; detection circuitry capable of using the characteristic to develop a control signal for controlling the power converter; and synchronous rectifier control circuitry connected to the detection circuitry wherein the control circuitry is adapted to modify a duty cycle of the power converter as a function of the control signal thereby to turn off a freewheel switch of the synchronous rectifier before turning off a forward switch of the synchronous rectifier during a reverse current period.Field of SearchSingle-ended, separately-driven typeWith automatic control of the magnitude of output voltage or current For forward-type converter Having synchronous rectifier Having feedback isolation (e.g., optoisolator, transformer coupled, etc.) Utilizing pulse-width modulation Having synchronous rectifier For inverters Transistor inverter Single-ended type Having current protection | |
