Controller for a synchronous rectifier and power converter employing the same
First Claim
1. 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.
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Accused Products
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.
112 Citations
26 Claims
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1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. 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:
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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. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A power converter, comprising:
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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. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification