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MAXREFDES1227: Miniature 24W, 12V DC-DC Flyback Converter Using MAX17596

MAXREFDES1227

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

描述

The MAXREFDES1227 is a miniature 12V output isolated power supply that can deliver up to 2A load current. The design employs the MAX17596 peak-current-mode controller in discontinuous-conduction mode (DCM) flyback topology running at 125kHz. The input voltage range of MAX17596 is 4.5V to 36V; however, an extra bias winding from the transformer is used to power the controller. This allows an input operating voltage of 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 that is used to implement this reference design. Design equations for the calculation of all the design parameters are presented. These equations show how the component values were calculated enabling users to modify this design for their applications.

Key Features

  • Miniature Design Optimized for Small Size
  • 17V to 60V Input Range
  • Isolated Output of 12V DC at 24W
  • 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

The MAXREFDES1227 is a miniature 12V output isolated power supply that can deliver up to 2A load current. The design employs MAX17596 peak current mode controller in discontinuous conduction mode (DCM) flyback topology running at 125kHz.

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设计,建造,测试

图中的电路板已完全组装并经过测试。不可出售。

 

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 2 - 12 24 Isolated Flyback

参数化

输入类型 DC
Vin(Min) 17
Vin(Max) 60
Iout(Max) 2
单路/多路输出 -
Vout(V) 12
Pout(W) 24
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 设计套件

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
maxrefdes1227-pcb PDF 715KB 2019-04-03
TTS MAXREFDES Test Results Template_Rev 0_0318 PDF 601KB 2019-04-03
maxrefdes1227-bom PDF 1MB 2019-04-03
maxrefdes1227-schematic PDF 23KB 2019-04-03
日期 类型
2019-04-03

maxrefdes1227-pcb

(PDF, 715KB)

2019-04-03

TTS MAXREFDES Test Results Template_Rev 0_0318

(PDF, 601KB)

2019-04-03

maxrefdes1227-bom

(PDF, 1MB)

2019-04-03

maxrefdes1227-schematic

(PDF, 23KB)

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