HALF BRIDGE COUPLED RESONANT GATE DRIVERS
First Claim
1. A method of controlling a switch driver, the method comprising:
- energizing a first inductor in a first direction with a first energy;
transferring the first energy from the first inductor to a second inductor, wherein the second inductor is coupled between a second switch-driving terminal of the switch driver and a second internal node, and the second inductor is magnetically coupled to the first inductor;
asserting a first turn-on signal at the second switch-driving terminal using the transferred first energy;
energizing the first inductor in a second direction opposite the first direction with a second energy after asserting the first turn-on signal at the second switch-driving terminal;
transferring the second energy from the first inductor to the second inductor; and
asserting a first turn-off signal at the second switch-driving terminal using the transferred second energy.
1 Assignment
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Accused Products
Abstract
In accordance with an embodiment, a method of controlling a switch driver includes energizing a first inductor in a first direction with a first energy; transferring the first energy from the first inductor to a second inductor, wherein the second inductor is coupled between a second switch-driving terminal of the switch driver and a second internal node, and the second inductor is magnetically coupled to the first inductor; asserting a first turn-on signal at the second switch-driving terminal using the transferred first energy; energizing the first inductor in a second direction opposite the first direction with a second energy after asserting the first turn-on signal at the second switch-driving terminal; transferring the second energy from the first inductor to the second inductor; and asserting a first turn-off signal at the second switch-driving terminal using the transferred second energy.
20 Citations
26 Claims
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1. A method of controlling a switch driver, the method comprising:
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energizing a first inductor in a first direction with a first energy; transferring the first energy from the first inductor to a second inductor, wherein the second inductor is coupled between a second switch-driving terminal of the switch driver and a second internal node, and the second inductor is magnetically coupled to the first inductor; asserting a first turn-on signal at the second switch-driving terminal using the transferred first energy; energizing the first inductor in a second direction opposite the first direction with a second energy after asserting the first turn-on signal at the second switch-driving terminal; transferring the second energy from the first inductor to the second inductor; and asserting a first turn-off signal at the second switch-driving terminal using the transferred second energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A circuit comprising:
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a first switching circuit having a first switch-driving terminal configured to be coupled to a gate node of a first switching transistor; a first inductor; a second switching circuit having a second switch-driving terminal configured to be coupled to a gate node of a second switching transistor; a second inductor having a first terminal coupled to a second internal node of the second switching circuit and a second terminal coupled to a second switch-driving terminal of the second switching circuit, wherein the second inductor is magnetically coupled to the first inductor; and a second switching transistor having a gate terminal configured to be coupled to the second switch-driving terminal of the second switch circuit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A switch driver system comprising:
a first integrated circuit comprising a first switch-driving terminal configured to be coupled to a control terminal of a first switch and a first terminal of a first inductor that is magnetically coupled to a second inductor; a first inductor connection terminal configured to be coupled to a second terminal of the first inductor, a capacitor coupled between a reference connection terminal and a floating power supply node, a first switching circuit coupled to the reference connection terminal, the floating power supply node, the first switch driving terminal, and the first inductor connection terminal, and a first switch controller coupled to the first switching circuit, the first switch controller to activate the first switching circuit based on sensing a signal coupled from the first inductor. - View Dependent Claims (22, 23, 24, 25, 26)
Specification