Controller for a synchronous rectifier and power converter employing the same
AssigneeLucent Technologies Inc.
InventorMilivoje Slobodan Brkovic
Life of this patent
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Abstract
For use in a power converter having a power switch and a synchronous rectifier device coupled between an input and an output thereof, a transient response network, method of disabling a synchronous rectifier device and power converter employing the network and method. In one embodiment, the transient response network includes a synchronous rectifier controller, coupled to the power switch and the synchronous rectifier device, that senses a state of the power switch and disables the synchronous rectifier device when the power switch has remained in a nonconducting state for at least a specified period of time.
Claims26
For use in a power converter having a power switch and a synchronous rectifier device coupled between an input and an output thereof, a transient response network, comprising:
- a synchronous rectifier controller, coupled to said power switch and said synchronous rectifier device, that senses a drive signal to said power switch and disables said synchronous rectifier device when said drive signal is missing for at least a specified period of time.
For use in a power converter having a power switch and a synchronous rectifier device coupled between an input and an output thereof, a method of disabling said synchronous rectifier device, comprising:
- sensing a drive signal to said power switch;
- and
- disabling said synchronous rectifier device when said drive signal is missing for at least a specified period of time.
A power converter, comprising:
- a power switch coupled to an input of said power converter;
- an inductor coupled to said power switch;
- an output capacitor coupled to an output of said power converter;
- a synchronous rectifier device located in a discharge path between said inductor and said output capacitor;
- and
- a transient response network, comprising:
- a synchronous rectifier controller, coupled to said power switch and said synchronous rectifier device, that senses a drive signal to said power switch and disables said synchronous rectifier device when said drive signal is missing for at least a specified period of time.
Dependencies are inferred from the claim text.