Dual-channel power supply device and electronic product production and testing device

Abstract

A dual-channel power supply device and an electronic product production and testing device are provided. The dual-channel power supply device comprises a direct current input unit, an input current detection unit, a voltage transformation unit, an output control unit, and a processing unit. The direct current input unit is for inputting a direct current supply and providing a first power source supply input according to the direct current supply. The voltage transformation unit is used for voltage transformation processing of the first power source supply input to provide a second power source supply input. The output control unit is used to provide two power source supply outputs corresponding to the two power source supply inputs respectively. The power-on time of the second power source supply output is a preset time length later than the power-on time of the first power source supply output. The processing unit can monitor a current detection value, the voltage values of the two power source supply inputs and the two power source supply outputs, and whether a load should be connected. The dual-channel power supply device can supply necessary power for electronic products during production conveniently and reliably.

Description

technical field [0001] The invention relates to production and testing equipment for electronic products, in particular to a power supply device that provides dual-channel power supply for electronic products. Background technique [0002] At present, in the production process of electronic products such as mobile phones, two power sources with different voltages are often required to supply power to the mobile phone to complete relevant functional tests. As a result, two separate power paths are required to power the phone under test. Because in the testing process, it is generally: generally after the first power supply is powered on for a period of time, the second power supply can be powered on, so the two power supplies also have certain requirements on the power-on time. Moreover, since the voltages of the two power supplies are different, if the two power supplies are connected reversely or the voltage setting of a certain power supply is wrong, it is very likely to ...

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Problems solved by technology

Moreover, because the voltages of the two power supplies are different, if the two power supplies are reversed or the voltage setting of one power supply is wrong, it is very likely to cause damage to the tested mobile phone.

In addition, because mobile phone production testing often requires the use of fixtures to test mobile phones, when the mobile phone is connected to the power supply system on the fixture, instantaneous overshoot voltage or static electricity often occurs.

see figure 1 In the power-on supply curve of the power supply device of the electronic product production test equipment shown, during the power-on process of the 4V power supply of the tested mobile phone, the overshoot voltage is as high as about 6.3V, and the overshoot process lasts for about 50 microseconds. This may also cause serious damage to the tested mobile phone

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