VIPER27集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)規(guī)格書PDF中文資料

VIPER27屬于集成電路（IC）的ACDC轉(zhuǎn)換器離線開關(guān)。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的VIPER27AC DC 轉(zhuǎn)換器，離線開關(guān)該系列是元器件級控制產(chǎn)品，用于構(gòu)建將交流市電轉(zhuǎn)換為直流電（通常電壓大幅降低）的設(shè)備。集成和未集成系統(tǒng)主要開關(guān)元件的器件均包括在內(nèi)。由于高輸入輸出電壓比，以及此類系統(tǒng)中通常需要隔離，這些器件通常與外部變壓器配合使用。盡管通常使用定制變壓器來實(shí)現(xiàn)此用途，但也有許多專門用于此用途的庫存產(chǎn)品，請參見“開關(guān)轉(zhuǎn)換器，SMPS 變壓器”標(biāo)題。

特性 Features

? Power ratings:

– input DC voltage: 375 V to 425 V

– output voltage: 48 V

– maximum output current: 62.5 A

– output power: 3 kW

– peak efficiency: 95.3%

– HF transformer isolation voltage: 4 kV

? Resonant and switching frequencies:

– max DC-DC switching frequency: 380 kHz (at startup)

– closed loop switching frequency: 120 kHz to 250 kHz

– resonant frequency: 175 kHz

? Protection mechanisms:

– undervoltage and overvoltage protection on input and output

– overtemperature protection

– short-circuit protection

– forced cooling with air flow speed modulation according to the output power and temperature

? Efficiency:

– adaptive synchronous rectification

– light load burst mode

? Digital control with STM32F334 microcontroller

描述 Description

The STEVAL-DPSLLCK1 is a digitally controlled 3 kW full bridge LLC resonant DCDC converter with output synchronous rectification. The kit consists of a power board, digital control board, adapter board, and firmware modules.

The full bridge primary section of the LLC converter is based on MDmesh? DM2 Power MOSFETs for high efficiency performance. The PWM switching frequency is digitally controlled to regulate the output voltage. The converter operates at near resonant frequencies to maximize efficiency and achieve Zero Voltage Switching (ZVS) over the entire operating range.

The HF transformer provides galvanic isolation and magnetic integration of the inductive elements for a compact design.

Synchronous rectification (SR) with STripFET? F7 Power MOSFETs is employed on the secondary side to reduce conduction losses.

The STM32F334 microcontroller on the digital control board embeds a high resolution timer for finer regulation and can communicate status information via USART, CAN, SMBus, and opto-coupled serial communication.

Both the primary and secondary sections are supplied by an off-line flyback circuit based on VIPer27HD which provides regulated voltages to the control board, the gate driver ICs and the signal conditioning circuits.

You can connect a PFC to the power board and extend communication and interfacing with the supplied adapter board.