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MAXREFDES1182: 3.5W 3.3V Offline Flyback Converter Using the MAX17595

MAXREFDES1182

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 MAX17595 is a peak-current-mode controller for designing wide input-voltage flyback regulators. The MAX17595 offers optimized input thresholds for universal input AC-DC converters and telecom DC-DC (36V to 72V input range) power supplies. It contains a built-in gate driver for an external n-channel MOSFET. The MAX17595 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 MAX17595 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—Offline (Universal Input AC) and Telecom (36V to 72V) Flyback Controller
  • 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,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
AC 176 284 1.06 - 3.3 3.5 Isolated Flyback

参数化

输入类型 AC
Vin(Min) 176
Vin(Max) 284
Iout(Max) 1.06
单路/多路输出 -
Vout(V) 3.3
Pout(W) 3.5
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
MAX17595 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
maxrefdes1182_bom PDF 112KB 2018-07-10
maxrefdes1182_pcb PDF 1MB 2018-07-10
MAXREFDES1182 - 3.5W 3.3V Offline Flyback Converter Using the MAX17595 PDF 544KB 2018-07-10
maxrefdes1182_schematic PDF 36KB 2018-07-10
日期 类型
2018-07-10

maxrefdes1182_bom

(PDF, 112KB)

2018-07-10

maxrefdes1182_pcb

(PDF, 1MB)

2018-07-10

MAXREFDES1182 - 3.5W 3.3V Offline Flyback Converter Using the MAX17595

(PDF, 544KB)

2018-07-10

maxrefdes1182_schematic

(PDF, 36KB)

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