Circuit and method for control of multi-module power supply synchronization
A power supply synchronization, multi-module technology, applied in circuit devices, sequence/logic controller program control, electrical program control and other directions, can solve problems such as difficulty in realizing multi-module power supply synchronization
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Embodiment 1
[0047] Embodiment 1: Power supply control units are installed on multiple modules that require power synchronization to detect the input power supply voltage of the modules. After detecting that the voltage reaches the first preset value, the power supply control units of the multiple modules are synchronously controlled. The working power supply outputs the working voltage; or when any module detects that the voltage no longer satisfies the second preset value during the working process, the working power supply of the plurality of modules is synchronously controlled to stop outputting the working voltage. The first and second preset values may be minimum required voltage values of the working power supply.
[0048] The input power supply that provides input voltage for multiple modules can be the same or different. If the same input power supplies power to all modules, since the input power introduced into each module is the same, the power control unit on each module can...
Embodiment 2
[0050] In the second embodiment, a power control unit is installed on multiple modules that require power synchronization, and a signal unit is installed on any of the modules, and the signal unit is connected to all power control units to generate synchronous power-on / The power unloading signal is used to trigger the power supply control unit to synchronously control the working power output / stop outputting working voltage of all modules.
[0051] In the process of controlling the synchronous power-on process of multiple modules, the signal unit can detect the input power supply voltage of each module, and generate the above-mentioned synchronous power-on signal after detecting that the input power supply voltage of all modules exceeds the preset value, or During the working process of the module, it is detected that any input power supply voltage no longer satisfies the preset value and generates the above-mentioned synchronous unloading signal. In addition, the setting of ...
Embodiment 3
[0052] Embodiment 3. In order to realize the abnormality detection requirements usually encountered in circuit design, this embodiment sets a power control unit and an abnormality detection unit on multiple modules that have power synchronization requirements. The working conditions of the power supply are monitored and connected with all power supply control units. When an abnormality detection unit detects an abnormal situation such as abnormal power failure or short circuit in the module, it will trigger the power control unit of all modules to synchronously control the working power supply to stop outputting the working voltage.
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