Power device driving circuit and associated methods
First Claim
1. A circuit for driving a power device comprising:
- a low side gate driver; and
a high side gate driver adjacent the low side gate driver and comprising a high side gate driver logic input, a high side gate driver output, a latch connected between the high side gate driver logic input and the high side gate driver output, and a control circuit receiving an output of the latch and controlling signals from the high side gate driver logic input to the latch based upon the output of the latch.
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Abstract
The circuit and method translate a logic level input signal to signals at high voltage levels to drive a power device, such as a power MOSFET, while minimizing the power consumption. The circuit for driving the power device includes a low side gate driver, and a high side gate driver adjacent thereto. The high side gate drive includes a high side gate driver logic input, a high side gate driver output, a latch connected between the high side gate driver logic input and the high side gate driver output, and a control circuit receiving an output of the latch and controlling signals from the high side gate driver logic input to the latch based upon the output of the latch.
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Citations
26 Claims
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1. A circuit for driving a power device comprising:
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a low side gate driver; and
a high side gate driver adjacent the low side gate driver and comprising a high side gate driver logic input, a high side gate driver output, a latch connected between the high side gate driver logic input and the high side gate driver output, and a control circuit receiving an output of the latch and controlling signals from the high side gate driver logic input to the latch based upon the output of the latch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A high side gate driver for a power device driving circuit, the high side gate driver comprising:
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a latch for receiving a high side gate driver logic input signal and outputting a high side gate driver output signal; and
a control circuit for receiving the high side gate driver output signal of the latch and for controlling signals to the latch based upon the high side gate driver output signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26)
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19. A method for driving a power device comprising:
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latching a high side gate driver logic input signal with a latch;
outputting a high side gate driver output signal based upon the latched high side gate driver logic input signal; and
controlling the high side gate driver logic input signal based upon the high side gate driver output signal to minimize power consumption.
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Specification