Switching device with resistive divider
First Claim
Patent Images
1. A circuit comprising:
- a metal-oxide-semiconductor field-effect transistor (MOSFET) including a source terminal, a gate terminal, a drain terminal, and a body terminal; and
a resistive divider having a first resistor and a second resistor, the resistive divider coupled with and between the gate terminal and the body terminal, and further coupled with a ground source and a DC voltage source;
wherein the DC voltage source is further coupled with the gate terminal and configured to provide a constant DC voltage to the gate terminal and the resistive divider; and
wherein the DC voltage of the gate terminal and a voltage of the body terminal are dependent on the constant DC voltage and a ground voltage of the ground source, and independent of a voltage of the source terminal and a voltage of the drain terminal.
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Abstract
Embodiments provide a switching device including one or more field-effect transistors (FETs). In embodiments, a resistive divider comprising a first resistor and a second resistor may be coupled with the FET at a position electrically between a gate terminal of the FET and a body terminal of the FET.
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Citations
27 Claims
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1. A circuit comprising:
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a metal-oxide-semiconductor field-effect transistor (MOSFET) including a source terminal, a gate terminal, a drain terminal, and a body terminal; and a resistive divider having a first resistor and a second resistor, the resistive divider coupled with and between the gate terminal and the body terminal, and further coupled with a ground source and a DC voltage source; wherein the DC voltage source is further coupled with the gate terminal and configured to provide a constant DC voltage to the gate terminal and the resistive divider; and wherein the DC voltage of the gate terminal and a voltage of the body terminal are dependent on the constant DC voltage and a ground voltage of the ground source, and independent of a voltage of the source terminal and a voltage of the drain terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A circuit comprising:
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a DC power source configured to provide a constant DC voltage; a ground source configured to provide a ground voltage; and one or more unit cells coupled with the DC power source and the ground source, a unit cell of the one or more unit cells including; a metal-oxide-semiconductor field-effect transistor (MOSFET) having a body terminal, a gate terminal coupled with the DC power source such that the DC power source is configured to provide the DC voltage to the gate terminal, a source terminal, and a drain terminal; and a resistive divider that does not include a capacitor, the resistive divider coupled with the DC power source such that the DC power source is configured to provide the DC voltage to the resistive divider, the resistive divider comprising a first resistor and a second resistor and configured to bias a voltage of the body terminal between the DC voltage and the ground voltage when the DC voltage is not equal to the ground voltage such that the voltage of the body terminal and the DC voltage of the gate terminal are dependent on the DC voltage and the ground voltage and independent of a voltage of the source terminal and the drain terminal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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coupling a metal-oxide-semiconductor field-effect transistor (MOSFET) with a DC power source and a ground source, the MOSFET comprising a drain terminal, a body terminal, a source terminal, and a gate terminal; coupling a first resistor directly to a second resistor to form a resistive divider; and coupling the body terminal and the gate terminal of the MOSFET with the resistive divider such that the resistive divider is positioned between the body terminal and the gate terminal such that a voltage at the body terminal and the gate terminal are dependent on a constant DC gate voltage provided by the DC power source and a ground voltage of the ground source, and independent of a voltage of the source terminal and the drain terminal; wherein a resistance of the first resistor and a resistance of the second resistor, within the resistive divider, are based at least in part on a desired voltage of the body terminal when the gate terminal is at the constant DC gate voltage provided by the DC power source, wherein the DC gate voltage is not equal to the ground voltage of the ground source. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification