Four protective measures to extend the service life of the power adapter!

I. The superthermal efficiency or over AC current limit of pulse width by pulse width

In the new product research and development process of the knob Power Adapter, the superthermal efficiency and over AC current limit one pulse width by one pulse width are indispensable, and this kind of superthermal efficiency or over AC current limit one pulse width by one is a very reasonable way to output overvoltage protection in the specific application. This process is often used in the extra sub-side current limiting maintenance. In practical application, it is a very reasonable way of output overvoltage protection, which is often used in the maintenance of additional subside current limiting. In the previous switchgear, the AC input was monitored in real time. If this alternating current exceeds the required limit current value, the on-pulse width will stop. In the continuous flyback converter, its larger alternating current determines the thermal efficiency of integrated operational amplifier, and this kind of maintenance integrated operational amplifier becomes a true thermal efficience-limited maintenance integrated operational amplifier.

Two, the super thermal efficiency of the time off maintenance

As a very reasonable output overvoltage protection technology, super thermal efficiency time-off maintenance has been widely promoted in China's power adapter products. In a time-hopping system, the provision of temporary transient alternating current is permitted, and the alternating current can only be turned off when the shear force exceeds the safe value for a long period of time. The presentation of short transient alternating current will not easily harm the credibility of the generator, nor will it easily harm the profit of the generator. Only the requirement of continuous AC power for a long time will jeopardize the profit and volume of integrated operational amps.

3. Flyback superthermal efficiency limit Protection Law

In addition to the two methods described above, flyback ultra-thermal efficiency limit protection law is also a key strategy to reasonably ensure the safety of knob power adapter production work, currently in China's adapter development and manufacturers in the process of processing is more common. This type of maintenance process is an extension of the up-speed approach. In adaptor integrated operational amps with this protection, a specialized integrated operational amp monitors the primary AC and secondary side currents, reducing thermal efficiency as the output current decreases. According to this way, when the load resistance drops, the output alternating current is reduced to avoid the side electronic devices suffer from too strong shear force harm, its defect is used to discrete the system load when the locking condition.

Iv. Constant thermal efficiency limit protection Law

Uniform motion typing thermal efficiency limit protection law is the fourth kind of knob power adapter maintenance technology that people will introduce today. It is the output maintenance technology that is more practical in the world at this stage. It is unavoidable in the development process of the laptop adapter and its computer adapter. The maintenance mechanism of this type of mode depends on maintaining the primary integrated operational amp according to the limited large transfer heat efficiency. However, in flyback converter, this kind of process basically can not maintain the side output components. For example, in a continuous flyback converter, the original edge value AC is already limited, and the transfer heat efficiency is also limited.