Multiplex output power supply

Abstract

The invention provides a multi-output power supply comprising at least one sequential control circuit. Multiple sequential outputs can be achieved and the settling time of each output voltage can be set as needed. It is used to control the auxiliary circuit delay turn-on output of the switching power supply product, so as to solve the sequential start-up application requirements of multiple devices of the customer, reduce the cost and occupy small space. When this circuit can be used in the switching power supply with more than two outputs, the effect is the 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 sequence of startup or shutdown, for example, one device starts first, and other devices start after a period of delay to ensure the normal operation or storage of the device 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 ...

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 sequence of startup or shutdown, for example, one device starts first, and other devices start after a period of delay to ensure the normal operation or storage of the device 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 output voltage of the main circuit and auxiliary circuit of the switching power supply product is established almost at the same time, which does not meet the customer's timing application

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