Methods and apparatus for controlling a bias voltage
AssigneeSemiconductor Components Industries, LLC
InventorAkinobu Onishi
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Abstract
Various embodiments of the present technology may comprise methods and apparatus for controlling a bias voltage. Methods and apparatus for controlling a bias voltage to an electrical device according to various aspects of the present invention may comprise a voltage regulator circuit to generate a first voltage, a clock driver circuit to generate a second voltage, and a charge pump system to generate the bias voltage and supply the bias voltage to the electrical device. The apparatus may be responsive to a control signal that indicates a startup operation of the electrical device.
Claims20
An integrated circuit capable of generating a bias voltage, comprising:
- a voltage regulator circuit configured to:
- receive a control signal;
- and
- generate a regulator voltage in response to the control signal;
- a clock driver circuit coupled to the voltage regulator circuit and configured to generate a clock driver output signal in response to the regulator voltage;
- and
- a charge pump system coupled to the clock driver circuit and configured to generate the bias voltage in response to the clock driver output signal.
A method for generating a bias voltage supplied to micro electro-mechanical device, comprising:
- generating a control signal;
- generating a first voltage according to the control signal;
- generating a second voltage according to:
- the first voltage;
- and
- a clock signal;
- and
- generating the bias voltage according to the second voltage.
A system, comprising:
- a micro electro-mechanical device;
- and
- an integrated circuit responsive to the micro electro-mechanical device, and configured to:
- generate a first voltage according to a control signal;
- wherein the control signal indicates a start-up operation of the micro electro-mechanical device;
- generate a second voltage according to the first voltage and a clock signal;
- generate a bias voltage according to the second voltage;
- and
- supply the bias voltage to the micro electro-mechanical device.
Dependencies are inferred from the claim text.