Power supply timing sequence control circuit
A sequence control circuit and control circuit technology, applied in program control, computer control, general control system, etc., can solve the problems of high cost, difficult control of power-on sequence and power-off sequence, etc.
Inactive Publication Date: 2014-01-15
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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- Application Information
AI Technical Summary
Problems solved by technology
[0002] When designing a power supply that can output multiple voltages, it is difficult for power design engineers to control the power-up sequence and power-down sequence between multiple voltages
The current practice is generally to test the power-on sequence and power-off sequence of the power supply through complex large-scale equipment, and the cost is relatively high.
Method used
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Embodiment Construction
[0014] Below in conjunction with accompanying drawing and preferred embodiment the present invention is described in further detail:
[0015] Please refer to figure 1 A preferred embodiment of the power sequence control circuit of the present invention includes a control circuit 10 , a number of voltage output circuits (this embodiment uses three voltage output circuits 11 - 13 as an example for illustration) and a display circuit 16 . In this embodiment, the power sequence control circuit is used to provide voltage for a main board.
[0016] The control circuit 10 is used to output five power-on control signals to the voltage output circuits 11-13 at a certain time interval according to its own setting, wherein the voltage output circuit 11 receives the first and second power-on control signals, and the voltage The output circuit 11 outputs the voltage Vout1 when receiving the first power-on control signal, and outputs the voltage Vout2 when receiving the second power-on con...
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A power supply timing sequence control circuit comprises a control circuit body, a plurality of voltage output circuits and a display circuit. The control circuit body is used for outputting a plurality of power-on control signals according to preset power-on timing sequence at intervals and outputting a plurality of power-down control signals according to preset power-down timing sequence at intervals. The voltage output circuits are used for receiving the power-on control signals and the power-down control signals from the control circuit body, voltages are output when the power-on control signals are received, and voltage outputting is stopped when the power-down control signals are received. The display circuit is connected with the control circuit body. The control circuit body is also used for detecting voltage values and current values output by the voltage output circuits, and the timing sequence of the power-on control signals, the timing sequence of the power-down control signals, the detected voltage values and the detected current values are displayed through the display circuit. The power supply timing sequence control circuit can adjust the timing sequence of the output voltages.
Description
technical field [0001] The invention relates to a power sequence control circuit. Background technique [0002] When designing a power supply that can output multiple voltages, it is difficult for power design engineers to control the power-up sequence and power-down sequence between multiple voltages. The current practice is generally to test the power-on sequence and power-off sequence of the power supply through complex large-scale equipment, and the cost is relatively high. Contents of the invention [0003] In view of the above, it is necessary to provide a low-cost power sequence control circuit. [0004] A power sequence control circuit, comprising: [0005] A control circuit for outputting several power-on control signals according to preset power-on sequence intervals and outputting several power-down control signals according to preset power-off sequence intervals; [0006] Several voltage output circuits are used to receive the power-on control signal from th...
Claims
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IPC IPC(8): G05B19/042
CPCG05F1/66
Inventor 白云童松林
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD