source:power adapter Popular:adapter release time:2021-09-29 10:38:49 Article author:sznbone
Power Adapter
1. The super thermal efficiency of pulse width one by one or the limit of alternating current
In the development process of the new product of the knob power adapter, the pulse width superheat efficiency and over-ac power limitation are indispensable, and this kind of pulse width-by-pulse superheat efficiency or over-ac power limitation is very reasonable in specific applications. The output overvoltage protection method is often used in additional secondary side current limiting maintenance. In specific applications, it is a very reasonable output overvoltage protection method. This process is often used in additional secondary side current limiting maintenance. In the previous switchgear, the input of AC power was to be monitored in real time. If this alternating current exceeds the required limit current value, the conduction pulse width will be suspended. Except in the continuous flyback converter, its larger AC power determines the thermal efficiency of the integrated operational amplifier. This type of maintenance integrated operational amplifier becomes a true thermal efficiency limited maintenance integrated operational amplifier.
2. Super thermal efficiency shut-off maintenance
Super thermal efficiency, shutdown and maintenance at the time, as this very reasonable output overvoltage protection technology, has already been widely promoted in the power adapter products produced in China at this stage. In the imperial power-jumping system, the provision of temporary transient alternating current is allowed, and the alternating current can only be switched off when the shearing force of the alternating current exceeds a safe value for a long time. The production of short-transient alternating current will not easily damage the credibility of the electric generator, nor will it easily cause great harm to the profit of the electric generator. Only the long-term continuous AC regulations can harm the profit and volume of integrated op amps.
3. Flyback super thermal efficiency limited protection law
In addition to the two methods introduced above, the flyback super thermal efficiency limit protection method is also a key countermeasure that can reasonably ensure the safe production of knob power adapters. At this stage, it is commonly used in the development of adapters and manufacturers in China. This type of maintenance process is an extension of the up-speed method. In the adapter integrated op amp that uses this protection method, there is a professional integrated op amp to monitor the primary side AC and secondary side current, and reduce the thermal efficiency when the output current decreases. . According to this type of method, when the load resistance drops, the output alternating current is reduced, so as to avoid the secondary side electronic devices from suffering from too strong shearing force. The defect is that it is used to disperse the system load when it is locked.
Fourth, Constant Thermal Efficiency Limited Protection Law
The constant-speed movement type thermal efficiency limit protection method is the fourth knob power adapter maintenance technology that people will introduce to everyone today. It is the most practical output maintenance technology in countries all over the world at this stage. It is in the development of laptop adapters and their computer adapters. It's inevitable in the process. The maintenance mechanism of this type of method depends on maintaining the primary side integrated operational amplifier according to the limited transfer heat efficiency. However, in flyback converters, this type of process basically cannot maintain the secondary output components. For example, not in the continuous flyback converter, the original wing value alternating current has long been restricted, and the limited heat transfer efficiency is also obtained. Four major protection measures!
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