Backup power supply for electronic equipment and its control method
A technology for backup power supply and electronic equipment, which is applied in emergency power supply arrangement, electrical components, circuit devices, etc., can solve the problems of power supply control being powerless, affecting the life of backup power supply, threatening the safety of electronic equipment and equipment, etc., and achieving the effect of ingenious design.
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Embodiment 1
[0020] see figure 1 , a backup power supply for electronic equipment, the backup power supply includes a backup power output terminal, an electronic equipment auxiliary power input terminal 4, a semiconductor switching device is arranged between the backup power output terminal and the electronic equipment auxiliary power input terminal 4 1. The semiconductor switching device is also connected with a micro-power consumption controller, and the micro-power consumption microcontroller is powered by a backup power supply, and uses its communication interface to receive control commands from the main system of electronic equipment, and the micro-power consumption microcontroller Store the received control command in its on-chip non-volatile memory, and control the on or off of the semiconductor switching device according to the control command, so as to control the access or disconnection of the backup power supply.
Embodiment 2
[0022] see figure 1 , as an improvement of the present invention, the micro-power microcontroller is set to PIC12LF1822. In normal operation, the current of the chip is 8μA, and in sleep mode, the operating current is only 0.8μA, which further reduces power consumption. The rest of the structures and advantages are exactly the same as in Embodiment 1.
Embodiment 3
[0024] see figure 1 , as an improvement of the present invention, the semiconductor switching device is set as IRLML6402, its source is connected to the output terminal of the backup power supply, its drain is connected to the input terminal 4 of the auxiliary power supply of electronic equipment, and the gate is connected to the micro power consumption micro Controller 2 is connected to the control output pin. The rest of the structures and advantages are exactly the same as in Embodiment 1.
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