Abstract
In many industries and medical power system applications, dual power source design is often used to ensure that the equipment runs continuously, even when the main power supply is shut down. However, the voltage feedback between two independent power supplies and low loss output are critical issues for the system energy dissipation. Without using a dedicated chip, a new mutual blocking control technology is proposed in this paper to effectively solve the problem of voltage feedback existing in the conventional dual power system. In addition, without adding much hardware cost, the proposed dual power switch design can completely avoid voltage feedback and achieve a low voltage loss of about 30 mV when the load current is less than 0.5 A.
Highlights
Since it is common for equipment to work for 24 hours a day in industry applications, the equipment must record the current conditions when it is shut down, and initiate the necessary processing procedures
In order to solve the above-mentioned problem of the battery voltage being fed back to the main power supply caused by the sudden power failure, using the operating amplifiers (OPA) with a fast power supply caused by the sudden power failure, using the operating amplifiers (OPA) with a fast response as the decision control when switching, is an often-used method [8,10]
No matter which MOSFET-based dual power switching design is used, when power supply is switched, it will not cause the equipment to reset at the moment of switching
Summary
Since it is common for equipment to work for 24 hours a day in industry applications, the equipment must record the current conditions when it is shut down, and initiate the necessary processing procedures. DC source switching technology, whichOne wasreference an effective method out for switching the power that was supplied from the fuel cell [4] pointed that Paviobetween et al proposed dual. AC source switching technology switching two power supplies usually havefor asynchronous characteristics, that the was one ofprocess, the key the technologies to ensure power supply important loads. From the previous it is understood that the circuit design forburns automatic switching affects thedescription, load and interferes with its normal operation and even down.switching. Between main power supply and that the backup power supply must meet the following functional previous the description, it is understood the circuit design for automatic switching between the main.
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