It is a power module switching power supply, which can be divided into two categories: AC/DC and DC/DC.
DC/DC converter is now modular, and design technology and production processes at home and abroad have been mature and standardized, and has been recognized by the user, but the modularity of AC/DC, because of its own characteristics make the process of modularity, encountered more complex technology and process manufacturing problems.
AC-DC power supply module can make the circuit to form a constant current device, such as dry cells, batteries, DC generators, etc., known as DC power supply. DC power supply has positive and negative two electrodes, positive electrode potential is high, negative electrode potential is low; when the two electrodes are connected to the circuit, the DC power supply can maintain a constant potential difference between the two electrodes, so as to form a constant current from the positive electrode to the negative electrode in the external circuit.
Expanded Information:
Modular Power Supply p>The role of the module power supply
I, isolation:
1, safety isolation: strong and weak power isolation \ IGBT isolation drive \ surge isolation protection \ lightning isolation protection (such as human contact with the isolation of medical electronic equipment protection);
2, noise isolation: (analog circuitry and digital circuitry isolation, isolation of strong and weak signals);
3, grounding Loop elimination: remote signal transmission\ distributed power supply system.
2, protection: short circuit protection, over-voltage protection, under-voltage protection, over-current protection, other protection.
Three, voltage conversion: boost conversion\buck conversion\AC/DC, DC/AC conversion\polarity conversion (positive and negative polarity conversion, single power supply and positive and negative power conversion, single power supply and multi-power conversion).
Baidu Encyclopedia - Power Module
Baidu Encyclopedia - AC-DC Power Module