Multi-output power supply

Abstract

A multi-output power supply includes at least one sequencing control circuit, multiple timing outputs can be achieved. the settling time of each output voltage is set according to the need and is usedto control the auxiliary circuit delay turn-on output of the switching power supply product, so as to solve the sequential power-down application demand of a plurality of equipment of the customer, at the same time, the cost is reduced, and the occupying space is small. When the circuit can be used in the switching power supply with more than two outputs, the effect is most obvious.

Description

technical field [0001] The invention relates to the field of switching power supplies, in particular, to a switching power supply with multiple outputs. Background technique [0002] In today's switching power supply production, many switching power supply products have achieved multi-channel output to meet the needs of customers with multiple devices, and at the same time greatly reduce costs. Switching power supply products have become the first choice for customers; at present, many devices require a sequential power-down or shutdown situation, for example, one device is turned off first, and other devices are turned off after a period of time to ensure the normal operation of the device or Store data, etc.; the current industry solution is to use a sequential power supply socket or multiple switching power supply products and software compatible implementations, such as figure 1 , but this leads to high cost and large space occupation, which is not what manufacturers an...

AI Technical Summary

Problems solved by technology

[0002] In today's switching power supply production, many switching power supply products have achieved multi-channel output to meet the needs of customers with multiple devices, and at the same time greatly reduce costs. Switching power supply products have become the first choice for customers; at present, many devices require a sequential power-down or shutdown situation, for example, one device is turned off first, and other devices are turned off after a period of time to ensure the normal operation of the device or Store data, etc.; the current industry solution is to use a sequential power supply socket or multiple switching power supply products and software compatible implementations, such as figure 1 , but this leads to high cost and large space occupation, which is not what manufacturers and customers want, nor is it the optimal solution; and the cost of using a single switching power supply with multiple outputs is optimal, and the main and auxiliary circuits are both Satisfy the isolation of safety regulations, but the power-down time of the main and auxiliary circuits of switching power supply products is almost the same, which does not meet the customer's timing application

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