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MAXREFDES1247: Miniature 12W DC-DC Flyback Converter Using the MAX17596

MAXREFDES1247

参考设计免责声明 参照  重要声明和免责声明  涵盖参考设计和其他Maxim资源

Reference Guide

描述

The MAXREFDES1247 is a miniature, 12V output, isolated power supply that can deliver up to 1A of load current. The design uses the MAX17596 peak-currentmode controller in discontinuous-conduction mode (DCM) flyback topology running at 125kHz. The input voltage range of the MAX17596 is 4.5V to 36V. However, an extra bias winding from the transformer is used to power the controller. This allows the input operating voltage to go up to 60V for this design.

The transformer provides a galvanic isolation of 1500VRMS between the primary and the secondary. In addition, an optocoupler is used to provide secondary-side feedback to the controller for voltage regulation while maintaining isolation. This document also discusses a step-by-step procedure to implement this reference design and presents design equations for the calculation of all the design parameters. These equations show how to calculate the component values to allow users to modify this design for their applications.

特征

  • Miniature Design Optimized for Small Size
  • 17V to 60V Input Range
  • Isolated Output of 12V DC at 12W
  • Cycle-by-Cycle Current Limit
  • Resistor-Programmable UVLO/OVI Threshold
  • Low-Cost DCM Flyback Design
  • Galvanic Isolation Up to 1500VRMS
  • Proven PCB Layout
  • Fully Assembled and Tested

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设计, 制作, 测试

图中的电路板已经完成封装和测试。不可售。

 

示意图

Bill of Materials

试验结果

参数化

输入类型 Vin(Min) Vin(Max) Iout(Max) 单路/多路输出 Vout(V) Pout(W) 隔离/非隔离 拓扑
DC 17 60 1 - 12 12 Isolated Flyback

参数化

输入类型 DC
Vin(Min) 17
Vin(Max) 60
Iout(Max) 1
单路/多路输出 -
Vout(V) 12
Pout(W) 12
隔离/非隔离 Isolated
拓扑 Flyback

Maxim设备 (1)

器件号 名称 产品线 购买 设计套件和评估模块
MAX17596 峰值电流模式控制器,用于构建反激和boost稳压器 隔离电源 立即购买 Design Kits

Maxim设备 (1)

器件号 产品线
隔离电源
峰值电流模式控制器,用于构建反激和boost稳压器

设计资料 (4)

标题 类型 尺寸 日期
maxrefdes1247-bom PDF 71KB 2021-11-17
maxrefdes1247-schematic PDF 24KB 2021-04-28
TTS MAXREFDES Test Results Template_Rev 0_0318 PDF 393KB 2021-11-17
maxrefdes1247-pcb PDF 691KB 2021-04-28
日期 类型
2021-11-17

maxrefdes1247-bom

(PDF, 71KB)

2021-04-28

maxrefdes1247-schematic

(PDF, 24KB)

2021-11-17

TTS MAXREFDES Test Results Template_Rev 0_0318

(PDF, 393KB)

2021-04-28

maxrefdes1247-pcb

(PDF, 691KB)

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