Circuit structure for ensuring normal switching among working states of submodules in multi-module system

Abstract

The invention provides a circuit structure for ensuring the normal switching among the working states of submodules in a multi-module system. By adopting the circuit structure, the normal switching among the working states of submodules can be ensured. According to the technical scheme of the invention, the circuit structure comprises a power supply module, a power supply management module and a group of the submodules. The power supply module is used for supplying a working power supply to each loop. The power supply management module matches with the power supply module, and each submodule is composed of a field-effect tube switching circuit and a load. A residual voltage consumption circuit is additionally arranged inside a circuit structure of an arbitrary submodule. A control end of the power supply management module is connected with a controlled end of the residual voltage consumption circuit, and an output end of the field-effect tube switching circuit is connected with the residual voltage consumption circuit to be grounded. By adopting the circuit structure, the normal electrification of the submodules is ensured through accessing the matched residual voltage consumption circuit to the output end of the field-effect tube switching circuit and reducing the voltage at the input ends of the submodules to be within a permitted range.

Description

technical field [0001] The application relates to a circuit structure for ensuring normal switching of sub-module working states in a multi-module system, which belongs to the field of electronic technology, in particular to a circuit structure for realizing normal power-on of sub-modules by means of a residual voltage consumption circuit. Background technique [0002] With the rapid development of electronic technology, electronic equipment is developing in the direction of high integration and functional modularization, and with the introduction of green environmental protection, energy saving and consumption reduction requirements, and the demand for fault diagnosis functions, the system often needs to Occasionally turn off the working power of one module or several modules to achieve the purpose of energy saving and fault diagnosis, and restart the power of necessary sub-modules at an appropriate time to realize the functions required by users. Such as figure 1 As shown...

AI Technical Summary

Problems solved by technology

When the power supply of the sub-module is turned off, we expect the voltage of point P to be 0V. However, since each module in a multi-CPU system has many signal circuits connected to it in addition to the working power supply, it is necessary to add a large number of devices to realize the isolation of all these signals. , not only increases the complexity of the system, but also increases the cost

Therefore, in the actual design, these signal circuits cannot be isolated one by one. The sub-modules that are not powered off inject weak currents through these signal lines, causing the voltage at point P to be greater than 0.7V. Therefore, when the closed sub-modules are powered on again, their work The power supply does not start from the ideal 0V, causing the sub-module to fail to work normally after power-on

For this problem, the prior art does not solve it well, which brings inconvenience to the work in this field

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