STEVAL-DPSLLCK1中文资料3 kW Full Bridge LLC resonant digital power supply evaluation kit数据手册ST规格书

描述 Description

The STEVAL-DPSLLCK1 is a digitally controlled 3 kW full bridge LLC resonant DC-DC 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.

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

简介

STEVAL-DPSLLCK1属于开发板套件编程器的评估板-DC/DC与AC/DC（离线）SMPS。由制造生产的STEVAL-DPSLLCK1评估板 - DC/DC 与 AC/DC（离线）SMPS该系列产品提供了一种方便的方法，可对开关模式电源转换所用的器件（包括 DC-DC 和 AC-DC 型）进行性能或特性评估。“稳压器”（包含内部电源开关装置）和“控制器”（设计为控制外部电源开关）之类的器件均包括在内。