Switching power supply module is a modular package of discrete components on a switching power supply, resulting in a smaller, higher power density module power supply. Its internal circuit is also a switching power supply. Switching power supply module features: simple design: only a power module with a small number of discrete components, you can get power. Short development cycle: Modular power supply is generally available with a variety of input and output options. Users can also repeat the iteration or cross iteration, constituting a building block combination of power supply, to achieve multiple inputs and outputs, greatly reducing the prototype development time.
Changing flexibility: If there is a need to change the product design, it is only necessary to convert or parallel another suitable power supply module. Low technical requirements: Modular power supplies are generally equipped with a standardized front-end, highly integrated power supply modules and other components, thus making power supply design simpler. Modular power supply shell has a heat sink, heat sink and shell of the trinity of structural forms, the realization of the modular power supply conduction cooling method, so that the power supply temperature value tends to minimize. At the same time, but also endowed with a modular power supply gold and jade packaging. High quality and reliable: Modular power supply generally adopts fully automated production, and with high-tech production technology, so the quality is stable and reliable. Wide range of uses: modular power supply can be widely used in aerospace, locomotives and ships, military industry and weapons, power generation and distribution, post and telecommunications, metallurgy and mining, automatic control, household appliances, instruments and scientific research and experimentation, and other areas of social production and life, especially in the field of high-reliability and high-tech play an irreplaceable and important role. Switching power supply module applications in several major areas: electric power, mainly integrators and meters and smart meters industrial control, industrial control field. Medical, medical equipment, mainly tire protector, monitor and so on. Advantages of current-controlled switching power supply: it belongs to the double closed-loop control system, the outer loop consists of a voltage feedback circuit, the inner loop consists of a current feedback circuit, and the current feedback circuit is controlled by the voltage feedback circuit. Compared with the voltage feedback circuit, the gain bandwidth of the current feedback circuit is larger. The response to transient changes in the input voltage is fast, and the output voltage can be quickly adjusted to a stable value when the input voltage changes. This is because a change in the input voltage causes a change in the primary-side inductor current, which in turn changes the Us without going through an error amplifier, and the duty cycle of the output pulse can be changed directly through the current detection comparator. Under the ****same control of the voltage control loop and the current control loop, the voltage regulation ratio index can be improved. Can simplify the design of the error amplifier compensation network. As long as the current pulse reaches the set threshold value, the PWM comparator operates to turn off the power switching tube and maintain the output voltage stable. With the current limit protection circuitry, the current limit threshold can be accurately set by simply changing the Rs value.