Processing circuit for intelligently switching positive pin and ground pin of power supply and electronic equipment

Abstract

The invention provides a processing circuit for intelligently switching a positive pin and a ground pin of a power supply and electronic equipment. The processing circuit comprises two contacts, at least two sampling circuits and at least two switching execution modules, wherein the two contacts are used for being externally connected with a positive pin and a ground pin of a connector, and the two contacts comprise a first contact and a second contact; at least two sampling circuits are used for sampling the voltage of the first contact and the voltage of the second contact; the switching execution modules are configured to form at least one of the following connection states: a first connection state in which the first contact is connected to a positive pin of a power supply; the secondcontact is connected to a second connection state of the ground pin of the power supply; the first contact is connected to a third connection state of the ground pin of the power supply; the second contact is connected to a fourth connection state of the positive pin of the power supply, wherein the connection state formed by at least two switching execution modules is associated with the voltagesampled by at least two sampling lines.

Description

technical field [0001] The present invention relates to electronic equipment, in particular to a processing circuit and electronic equipment for intelligently switching the positive pin of the power supply and the ground pin of the power supply. Background technique [0002] When an electronic device is connected to the connector, reverse connection is likely to occur. For example, it is unavoidable that the chargers of different devices may be reversed due to inconsistent definitions of the positive pole of the power supply and the position of the ground pin, or some errors may cause a certain type of device. The internal power supply positive pole and the ground pin of the originally adapted charger are reversely connected. Regardless of the circumstances, the reverse connection may cause certain damage to the device. [0003] In the prior related art, taking Fig. 1 as an example, the first contact (i.e. the contact Node A in Fig. 1) and the second contact (i.e. the contac...

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Problems solved by technology

[0004] However, the above-mentioned use of diodes will bring various defects. For example, if it is required to pass a continuous 5A current, the general-purpose Schottky diodes generally have a size of about 50 square millimeters and a thickness of 2 millimeters. There will also be a voltage drop of about 0.3-0.4V, that is, the power consumption on each diode is 1.5-2W. When working, two diodes work at the same time, the voltage drop is 0.6-0.8V, and the power consumption is 3-4W. Four The total area of ​​the diode is about 200 square millimeters, and the volume is about 400 cubic millimeters

It can be seen that the defects in the prior art include: large space occupation, large voltage drop, high power consumption, high heat generation, high total cost, etc.

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