A power circuit without standing power supply

Abstract

The invention discloses a power supply circuit without standing power supply, which includes a main processing channel of equipment power supply and a power supply soft switch control circuit; the main processing channel of equipment power supply includes input power filtering, a power switch and a power conversion processing module; the power switch is used as a device The power switch component; the power conversion processing module is the internal power supply processing part of the device; the power soft switch control circuit includes a coupling unit, a micro switch unit, an instant power supply unit, a power switching unit, a key action generation unit and a switch state generation unit. The invention is beneficial to reduce the power consumption of the equipment, the corresponding circuit only has a little power consumption when the equipment is powered on, and no power consumption is generated when the equipment is powered off, so it is beneficial to reduce the power consumption of the equipment, and is especially suitable for power consumption Sensitive equipment, such as battery-operated equipment. In the power-off state, the control circuit is in a no-power state, which is beneficial to improve the life of the control circuit, thereby improving the reliability of the equipment.

Description

technical field [0001] The invention relates to a power supply circuit without standing power supply. Background technique [0002] The conventional power switch is located in the power supply path, and all the working current of the equipment flows through the power switch. When the operating current of the equipment is large, a power switch with a large current is often required, and the power switch with a large current will also have a larger volume. Applications for bulky power switches are often limited when the device form factor is small, such as in portable equipment. [0003] In portable devices such as handhelds and backpacks, due to their small size, soft power switches are often used to replace conventional power switches. In the existing implementation schemes, the soft switch of the power supply requires a set of standing power supplies to provide the required power for the relevant circuits to work. The block diagram of its circuit working principle is as ...

AI Technical Summary

Problems solved by technology

As long as the power input or battery exists, the standing power supply and control processing circuit are in full-time working state, which will cause long-term processing energy loss of the power supply or battery

In battery-powered devices, this design scheme will reduce the battery life of the equipment, and is not the optimal design scheme for low power consumption

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