Gate control circuit
AssigneeSilego Technology, Inc.
InventorsThomas D. Brumett, Jr., Marcelo Martinez, John Othniel McDonald
Life of this patent
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Abstract
An integrated circuit for switching a transistor is disclosed. In some embodiments, an operational amplifier is configured to drive a transistor, and slew rate control circuitry is configured to control the slew rate of the transistor source voltage during turn on. The transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
Claims40
An integrated circuit for switching a transistor, comprising:
- an operational amplifier configured to drive the transistor, wherein an output of the operational amplifier is input into a latch and wherein an output of the latch is connected to the transistor gate;
- and
- slew rate control circuitry configured to control slew rate of the transistor source voltage during turn on;
- wherein the transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
A method for switching a transistor, comprising:
- configuring an operational amplifier to drive the transistor, wherein an output of the operational amplifier is input into a latch and wherein an output of the latch is connected to the transistor gate;
- and
- configuring slew rate control circuitry to control slew rate of the transistor source voltage during turn on;
- wherein the transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
An integrated circuit for switching a transistor, comprising:
- an operational amplifier configured to drive the transistor;
- slew rate control circuitry configured to control slew rate of the transistor source voltage during turn on;
- and
- discharge control circuitry configured to provide a discharge path for the transistor source voltage when the transistor is switched off;
- wherein the transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
A method for switching a transistor, comprising:
- configuring an operational amplifier to drive the transistor;
- configuring slew rate control circuitry to control slew rate of the transistor source voltage during turn on;
- and
- configuring discharge control circuitry to provide a discharge path for the transistor source voltage when the transistor is switched off;
- wherein the transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
An integrated circuit for switching a transistor, comprising:
- a charge pump configured to generate a requisite gate drive voltage for the transistor;
- an operational amplifier configured to drive the transistor;
- and
- slew rate control circuitry configured to control slew rate of the transistor source voltage during turn on;
- wherein the transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
A method for switching a transistor, comprising:
- configuring a charge pump to generate a requisite gate drive voltage for the transistor;
- configuring an operational amplifier to drive the transistor;
- and
- configuring slew rate control circuitry to control slew rate of the transistor source voltage during turn on;
- wherein the transistor source voltage is employed as feedback to the operational amplifier to facilitate closed loop control of the transistor source voltage during switching of the transistor.
Dependencies are inferred from the claim text.