Overvoltage and undervoltage protection circuit of drive power supply
A driving power supply and overvoltage protection technology, which is applied in the direction of protection against overvoltage, protection against undervoltage or no voltage, etc., can solve the problem of increased current of the driving power supply and higher requirements on the output voltage and current of the circuit , burnt lamps and other issues
Active Publication Date: 2017-04-19
OCEANKING DONGGUAN LIGHTING TECH +2
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Problems solved by technology
Generally speaking, electronic products that use drive power have higher requirements on the output voltage and current of the circuit, that is, when the output voltage of the power supply is too high or too low, the electronic products will be damaged.
For example, when the power supply voltage of the lamp's driving power supply is too high, it will cause the lamp to burn out and also damage the driving power supply.
And when the driving power is too low, it may cause the current in the driving power to increase and damage the driving power
Method used
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[0036] like figure 1 Shown is the overvoltage and undervoltage protection circuit of the drive power supply.
[0037] An overvoltage and undervoltage protection circuit for a driving power supply, including a voltage conversion module 101 , an overvoltage protection module 103 , an undervoltage protection module 105 and a switch module 107 .
[0038] The voltage conversion module 101 is used to convert the driving power supply voltage into a first reference voltage and a second reference voltage, the first reference voltage is input to the overvoltage protection module 103 , and the second reference voltage is input to the undervoltage protection module 105 .
[0039] The overvoltage protection module 103 includes a first input terminal for inputting a driving power supply voltage, a second input terminal for inputting a first reference voltage, and an output terminal connected to the input terminal of the switch module 107 .
[0040] The undervoltage protection module 105 in...
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An overvoltage and undervoltage protection circuit of a drive power source comprises a voltage conversion module, an overvoltage protection module, an undervoltage protection module and a switch module. The voltage conversion module is used for converting drive power source voltage into first reference voltage and second reference voltage. When the drive power source voltage input by the first input end of the overvoltage protection module is higher than the first reference voltage, the overvoltage protection module controls the switch module to be stopped, and the drive source connected with the switch module is switched off. When the drive power source voltage input by the second input end of the undervoltage protection module is lower than the second reference voltage, the undervoltage protection module controls the switch module to be stopped, and the drive power source connected with the switch module is switched off. When abnormal phenomena such as overvoltage and undervoltage occur, the drive power source can be protected and is prevented from being damaged.
Description
technical field [0001] The invention relates to an abnormal protection circuit, in particular to an overvoltage and undervoltage protection circuit for a driving power supply. Background technique [0002] The driving power supply is a voltage converter that converts the power supply into a specific voltage and current to drive electronic products to work normally. Generally speaking, electronic products using drive power have higher requirements on the output voltage and current of the circuit, that is, when the output voltage of the power supply is too high or too low, the electronic products will be damaged. For example, when the power supply voltage of the driving power of the lamp is too high, it will cause the lamp to burn out, and also damage the driving power. However, when the driving power is too low, it may cause the current in the driving power to increase so as to damage the driving power. Contents of the invention [0003] Based on this, an overvoltage and ...
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IPC IPC(8): H02H3/20H02H3/24
Inventor 周明杰杨俊昌
Owner OCEANKING DONGGUAN LIGHTING TECH