Driver for a controllable switch in a power converter
First Claim
1. A driver configured to receive a control signal and operate a controllable switch, comprising:
- a switching network couplable to said controllable switch and including first and second complementary drive switches;
a capacitor coupled between control terminals of said first and second complementary drive switches; and
a diode couplable between a bias energy source and said capacitor, said first and second complementary switches configured to cooperate to produce a drive signal as a function of said control signal and a level of said bias energy source.
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Accused Products
Abstract
A driver for a controllable switch, a method of driving the controllable switch and a power converter employing the driver or the method. The driver receives a control signal and operates the controllable switch. In one embodiment, the driver includes a switching network coupled to the controllable switch and including first and second complementary drive switches. The driver also includes a capacitor coupled between control terminals of the first and second complementary drive switches, and a diode coupled between a bias energy source and the capacitor. The first and second complementary switches cooperate to produce a drive signal as a function of the control signal and a level of the bias energy source.
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Citations
21 Claims
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1. A driver configured to receive a control signal and operate a controllable switch, comprising:
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a switching network couplable to said controllable switch and including first and second complementary drive switches;
a capacitor coupled between control terminals of said first and second complementary drive switches; and
a diode couplable between a bias energy source and said capacitor, said first and second complementary switches configured to cooperate to produce a drive signal as a function of said control signal and a level of said bias energy source. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a controllable switch, comprising:
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providing a switching network coupled to said controllable switch and including first and second complementary drive switches;
maintaining a voltage differential between said first and second complementary drive switches;
selectively blocking a current from a bias energy source to maintain said voltage differential; and
controlling said first and second complementary switches to produce a drive signal as a function of a control signal and a level of said bias energy source. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A power converter, comprising:
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a power switch, a synchronous rectifier coupled to said power switch and having a rectifier switch; and
a driver that receives a control signal and operates at least one of said power switch and said rectifier switch, including;
a switching network coupled to said at least one of said power switch and said rectifier switch and including first and second complementary drive switches;
a capacitor coupled between control terminals of said first and second complementary drive switches; and
a diode coupled between a bias energy source and said capacitor, said first and second complementary switches cooperating to produce a drive signal as a function of said control signal and a level of said bias energy source. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification