Chip Level Integration of a Boosted Class-D Amplifier and Integrated LED Flash Driver
First Claim
1. A single integrated circuit, comprising:
- a single boost converter that supplies power;
a first circuit that provides a circuit operation coupled to the single boost converter that supplies power to the first circuit;
a second circuit that provides another circuit operation coupled to the single boost converter that supplies power to the second circuit; and
a controller coupled to the single boost converter, the first circuit, and the second circuit wherein the controller receives an operational mode signal and in response to the operational mode signal, drives the single boost converter to respectively provide power to the first circuit and the second circuit.
1 Assignment
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Accused Products
Abstract
A single integrated circuit includes a single boost converter, a first circuit, a second circuit, and a controller. The single boost converter supplies power to the first and second circuits. The controller receives an operational mode signal and in response to the operational mode signal, drives the single boost converter to respectively provide power to the first and second circuits. When the first and second circuits are simultaneously active, the controller manages an operation of the first circuit so that proper operation of the second circuit is maintained. The first circuit may be an LED flash driver, and the second circuit may be an audio amplifier, such as a Class-D audio amplifier. The controller manages an operation of the audio amplifier so that a sufficient amount of current is supplied to the LED flash driver for proper operation of the LED flash driver.
12 Citations
30 Claims
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1. A single integrated circuit, comprising:
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a single boost converter that supplies power; a first circuit that provides a circuit operation coupled to the single boost converter that supplies power to the first circuit; a second circuit that provides another circuit operation coupled to the single boost converter that supplies power to the second circuit; and a controller coupled to the single boost converter, the first circuit, and the second circuit wherein the controller receives an operational mode signal and in response to the operational mode signal, drives the single boost converter to respectively provide power to the first circuit and the second circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of driving a first circuit and a second circuit using a single boost converter that are all within a single integrated circuit, comprising:
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supplying, by the single boost converter, power to the first circuit that provides a circuit operation; supplying, by the single boost converter, power to the second circuit that provides another circuit operation; and controlling, by a controller, the single boost converter, the first circuit, and the second circuit; receiving, by the controller, an operational mode signal and in response to the operational mode signal, driving, by the controller, the single boost converter to respectively provide power to the first circuit and the second circuit. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification