FPN1903A MOTOROLA Power module

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Essential details：FPN1903A MOTOROLA Power module

Product Description

FPN1903A The power module is a power supply that can be mounted directly on the printed circuit board. It has the characteristics of small size, high integration, good stability and suitable for mounting. According to the conversion mode, it is generally divided into AC to DC or DC to DC, which is widely used in various fields.

FPN1903A DC/DC conversion is the conversion of a variable DC voltage into a fixed DC voltage, also known as DC chopper. There are two ways of working the chopper, one is the pulse width modulation mode Ts unchanged, changing ton(universal), the other is frequency modulation (universal).
(1) Buck circuit – buck chopper, the output average voltage U0 is less than the input voltage Ui, the polarity is the same.
(2) Boost circuit – boost chopper, the output average voltage U0 is greater than the input voltage Ui, the polarity is the same.
(3) Buck-Boost circuit – Buck or Boost chopper, the output average voltage U0 is greater than or less than the input voltage Ui, the polarity is opposite, inductive transmission.
(4) Cuk circuit – buck or boost chopper, the output average voltage U0 is greater than or less than the input voltage Ui, the polarity is opposite, capacitive transmission. There are also Sepic and Zeta circuits.
The above is a non-isolated DC-DC converter circuit, and the isolated DC-DC converter has forward circuit, flyback circuit, half-bridge circuit, full-bridge circuit and push-pull circuit.
FPN1903A Today’s soft switching technology makes DC/DC a qualitative leap, the United States VICOR company designed and manufactured a variety of ECI soft switching DC/DC converter, its maximum output power is 300W, 600W, 800W, etc., the corresponding power density is (6.2, 10, 17)W/cm3, efficiency is (80 ~ 90) %. Japan TDK-Lambda company recently launched a soft switching technology of high-frequency switching power module RM series, its switching frequency is (200 ~ 300)kHz, the power density has reached 27W/cm3, the use of synchronous rectifier (MOSFET instead of Schottky diode), so that the entire circuit efficiency increased to 90%.

FPN1903A

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FPN1903A MOTOROLA Power module

FPN1903A In general, such modules are called load (POL) power supply systems or point-of-use power supply systems (PUPS). Because of the advantages of the modular structure, the module power supply is widely used in switching equipment, access equipment, mobile communication, microwave communication, optical transmission, routers and other communication fields and automotive electronics, aerospace and so on.
Especially in recent years, due to the rapid development of data services and the continuous promotion of distributed power supply systems, the increase of module power supplies has exceeded the primary power FPN1903A supply. The module power supply has the function of isolation, strong anti-interference ability, built-in protection function, easy to integrate. With the extensive use of semiconductor technology, packaging technology and high-frequency soft switches, the power density of module power supplies is increasing, the conversion efficiency is becoming higher and higher, and the application is becoming simpler and simpler.
People in the field of switching power supply technology is the development of related power electronic devices, the development of switching frequency conversion technology, the two promote each other to promote the switching power supply every year with a growth rate of more than two digits to light, small, thin, low noise, high reliability, anti-interference direction. Switching power supply can be divided into AC/DC and DC/DC two categories, DC/DC converter has been modular, and the design technology and production process at home and abroad have been mature and standardized, and has been recognized by users, but the modularization of AC/DC, because of its own characteristics in the process of modularization, encounter more complex technology and process manufacturing problems. The structure and characteristics of the two types of switching power supplies are described below