Reference signal control circuit, control method and electronic device
A technology of reference signal and control circuit, applied in the field of electronics, can solve problems such as reference signal fluctuation, signal instability, component drive or control failure, etc.
Active Publication Date: 2019-01-11
BYD CO LTD
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Problems solved by technology
[0003] The reference signal generally does not change, but when the electronic device is changed due to the operating state or operating environment, it will cause fluctuations in the reference signal, resulting in signal instability, and further interference with the drive signal, control signal and other signals, which is likely to cause Component drive or control failure
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[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.
[0026] In the description of the present invention, it should be understood that the terms "first" and "second" are used for description purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.
[0027] In the descr...
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In a reference signal control circuit disclosed by the invention, a processing unit controls a switch unit to take the voltage of a first ground end as reference signals to output to a first reference signal end and determines whether the voltage of the first ground end exceeds a setting value or not. If the voltage of the first ground end exceeds the setting value, the processing unit controls the switch unit to employ the voltage of a preset power supply end to regulate the reference signals, and the processing unit regulates first signals outputted from the reference signal control circuit to the first signal input end according to the voltage of the presetting power supply end. The reference signals regulated by the processing unit are outputted to the first reference signals end, and the regulated first signals are outputted to the first signal input end of the load. In the control circuit, when the voltage of the ground end is larger than the setting value, the processing unit can employ the voltage of the presetting power supply end to regulate the reference signals of the load and can regulate the size of the first signals outputted to the signal input end of the load so as to ensure the signal stability. The present invention further discloses a reference signal control method and an electronic device.
Description
technical field [0001] The present invention relates to the field of electronics, and more specifically, to a reference signal control circuit, a reference signal control method, and an electronic device with the reference signal control circuit. Background technique [0002] In electronic devices, such as mobile phones, signals of many components (such as driving signals, control signals, etc.) need reference signals to realize. Some driving signals are referenced to the ground terminal, some are referenced to the power supply, and some signals such as differential signals are referenced to each other. [0003] The reference signal generally does not change, but when the operating state or operating environment of the electronic device changes, it will cause fluctuations in the reference signal, resulting in signal instability, and further interference with the drive signal, control signal and other signals, which is likely to cause The drive or control of the component ha...
Claims
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IPC IPC(8): G05B19/042
CPCG05B19/042
Inventor 李坡
Owner BYD CO LTD