Views: 0 Author: Site Editor Publish Time: 2024-05-28 Origin: Site
DC-DC Adapter is a power supply conversion device for small portable devices and electronic appliances.
What are the appearance features and usage of DC-DC Adapter?
What are the functions of the DC-DC Adapter?
What are the technical indicators of DC-DC Adapter?
DC-DC Adapter is a power supply conversion device for small portable devices and electronic appliances. It is generally composed of a casing, a power transformer and a rectifier circuit. It can be divided into output type and DC output type according to its output type; according to the connection method, it can be divided into plug-in type Wall and desktop. Since mobile PCs do not have batteries, DC-DC Adapters are particularly important.
Leakage Protection
When the phase line of the protected line is connected to the ground directly or through an unexpected load, an approximate sinusoidal waveform is generated and its effective value is a slowly changing residual current. When the current is greater than a certain value, the protector cuts off the line.
Short circuit protection
When the protected line tends to be short-circuited and generates more than 5 times the rated current, the protector cuts off the line.
Overcurrent Protection
When the load of the protected line increases, and more than 1.4 times the rated current is generated, the protector will cut off the line after a delay.
Overvoltage protection
When the power supply voltage of the protected line is higher than a certain value, the protector cuts off the line; when the power supply voltage returns to the normal range, the protector automatically turns on.
(1) Maximum output current. It mainly depends on the maximum allowable power dissipation and the maximum allowable working current of the main pass tube.
(2) Output voltage and voltage regulation range. Determined according to load requirements. If you need equipment with a fixed power supply, the adjustment range of the regulated power supply is preferably smaller, and the voltage value cannot be changed once it is set. For commercial power supplies, the output range is adjusted from 0V, the voltage regulation range is wider, and H is continuously adjustable.
(3) Efficiency. The regulated power supply itself is a transducer, and there is energy loss during energy conversion, which leads to the problem of conversion efficiency. To improve the efficiency is mainly to reduce the power consumption of the adjustment tube, which not only saves energy, but also improves the working reliability of the power supply.
(4) Protection characteristics. In the DC regulated power supply, when the load is overloaded or short-circuited, the regulating tube will be damaged. Therefore, there must be a fast-response overcurrent and short-circuit protection circuit in the power supply. In addition, when the regulated power supply fails, the output voltage is too high, which may damage the load. Therefore, an overvoltage protection circuit is also required.
After reading, do you have a deeper understanding of DC-DC Adapter? For further information, please contact HIENT Power Technology Co., Ltd.
HIENT Power Technology Co., Ltd. is the technology enterprises engaged in the development, design, manufacture and sale of power supply and power system.Power supply product includes adapter, charger, industry power... Read More
