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MAXREFDES1133: 7.5W DC-DC Flyback Converter Using MAX17596

MAXREFDES1133

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 MAX17596 is a peak-current-mode controller for designing wide input-voltage flyback regulators. The device offers input thresholds suitable for low-voltage DC-DC applications (4.5V to 36V) and contains a built-in gate driver for an external n-channel MOSFET. The MAX17596 houses an internal error amplifier with 1% accurate reference, eliminating the need for an external reference. The switching frequency is programmable from 100kHz to 1MHz with an accuracy of 8%, allowing optimization of magnetic and filter components, resulting in compact and cost-effective power conversion. For EMI-sensitive applications, the MAX17596 incorporates a programmable frequency dithering scheme, enabling low-EMI spread-spectrum operation. Users can start the power supply precisely at the desired input voltage, implement input overvoltage protection, and program soft-start time. A programmable slope compensation scheme is provided to ensure stability of the peak current-mode control scheme. Hiccup-mode overcurrent protection and thermal shutdown are provided to minimize dissipation in overcurrent and overtemperature fault conditions.

Key Features

  • Programmable Switching Frequency Allows Optimization of the Magnetic and Filter Components, Resulting in Compact, Cost-Effective, Efficient Isolated/Nonisolated Power Supplies
  • 100kHz to 1MHz Programmable Switching Frequency with Optional Synchronization
  • Peak Current Mode Control Provides Excellent Transient Response
  • Programmable Frequency Dithering Enables Low EMI Spread-Spectrum Operation
  • Integrated Protection Features Enhance System Reliability
  • Adjustable Current Limit with External Current-Sense Resistor
  • Fast Cycle-By-Cycle Peak Current Limiting Hiccup-Mode Short-Circuit Protection
  • Overtemperature Protection
  • Programmable Soft-Start and Slope Compensation
  • Input Overvoltage Protection

Icon

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

物料清单(BOM)

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 36 1.5 - 5 7.5 Isolated Flyback

参数化

输入类型 DC
Vin(Min) 17
Vin(Max) 36
Iout(Max) 1.5
单路/多路输出 -
Vout(V) 5
Pout(W) 7.5
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 (5)

标题 类型 尺寸 日期
TTS MAXREFDES Test Results Template_Rev 0_0318 PDF 206KB 2019-07-09
maxrefdes1133_schematic PDF 56KB 2019-07-09
MAXREFDES1133 - 7.5W DC-DC Flyback Converter Using MAX17596 PDF 597KB 2019-07-09
maxrefdes1133_pcb PDF 1MB 2019-07-09
maxrefdes1133_bom PDF 107KB 2019-07-09
日期 类型
2019-07-09

TTS MAXREFDES Test Results Template_Rev 0_0318

(PDF, 206KB)

2019-07-09

maxrefdes1133_schematic

(PDF, 56KB)

2019-07-09

MAXREFDES1133 - 7.5W DC-DC Flyback Converter Using MAX17596

(PDF, 597KB)

2019-07-09

maxrefdes1133_pcb

(PDF, 1MB)

2019-07-09

maxrefdes1133_bom

(PDF, 107KB)

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