Inductor driving device and inductor driving method
AssigneeElite Semiconductor Microelectronics Technology Inc.
InventorsMing-Fu Tsai, Sheng-Hung Hsu
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Abstract
An inductor driving device includes multiple switching elements and a control circuit, wherein an inductor is driven according to switching of the multiple switching elements. The control circuit is arranged to generate a control signal for controlling the multiple switching elements. In a first mode, the control signal has a constant frequency. In a second mode, the control circuit adjusts a frequency of the control signal and continuously changes a current direction of the inductor, to generate one of multiple audio signals through the inductor.
Claims23
An inductor driving device, comprising:
- multiple switching elements, wherein an inductor is driven according to switching of the multiple switching elements;
- a control circuit, arranged to generate a control signal for controlling the multiple switching elements;
- wherein in a first mode, the control signal has a constant frequency;
- and in a second mode, the control circuit adjusts a frequency of the control signal and continuously changes a current direction of the inductor, to generate one of multiple audio signals through the inductor.
An inductor driving method, comprising:
- generating a control signal to control multiple switching elements;
- and
- driving an inductor according to switching of the multiple switching elements;
- wherein in a first mode, the control signal has a constant frequency;
- and in a second mode, a frequency of the control signal is adjusted and a current direction of the inductor is continuously changed, to generate one of multiple audio signals through the inductor.
An inductor driving device, comprising:
- multiple switching elements, wherein an inductor is driven according to switching of the multiple switching elements;
- and
- a control circuit, arranged to generate a control signal for controlling the multiple switching elements;
- wherein in a first mode, the control signal has a constant frequency;
- and in a second mode, the control circuit adjusts a frequency of the control signal, to generate one of multiple audio signals through the inductor;
- wherein each of the multiple audio signals is composed by a Morse code.
Dependencies are inferred from the claim text.