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MAXREFDES1040: 59.4W, No-Opto Flyback DC-DC Converter Using MAX17690

MAXREFDES1040

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 MAX17690 is a peak current mode, fixed-frequency switching controller specifically designed for the isolated flyback topology operating in Discontinuous Conduction Mode (DCM). The device senses the isolated output voltage directly from the primary-side flyback waveform during the off-time of the primary switch. No auxiliary winding or optocoupler is required for output voltage regulation.

The MAX17690 is designed to operate over a wide supply range from 4.5V to 60V. The switching frequency is programmable from 50kHz to 250kHz. The MAX17690 provides an input overvoltage protection through the OVI pin. The 7V internal LDO output of the MAX17690 makes it suitable for switching both logic-level and standard MOSFETs used in flyback converters. With 2A/4A source/ sink currents, the MAX17690 is ideal for driving low RDS(ON) power MOSFETs with fast gate transition times. The MAX17690 provides an adjustable soft-start feature to limit the inrush current during startup.

The MAX17690 provides temperature compensation for the output diode forward-voltage drop. The MAX17690 has robust hiccup-protection and thermal protection schemes, and is available in a space-saving 3mm x 3mm 16-pin TQFN package with a temperature range from -40°C to +125°C.

特征

  • No Optocoupler or Third Winding Required
  • 2A/4A Peak Source/Sink Gate Drive Currents
  • 50kHz to 250kHz Programmable Switching Frequency
  • Input EN/UVLO Feature
  • Input Overvoltage Protection
  • Programmable Soft-Start
  • Hiccup-Mode Short-Circuit Protection
  • Thermal Shutdown Protection
  • -40°C to +125°C Operating Temperature Range
  • Space-Saving, 3mm x 3mm, 16-Pin TQFN Package

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 18 60 1.1 - 54 59.4 Isolated Flyback

参数化

输入类型 DC
Vin(Min) 18
Vin(Max) 60
Iout(Max) 1.1
单路/多路输出 -
Vout(V) 54
Pout(W) 59.4
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
MAX17690 60V、无光耦、隔离反激控制器 隔离电源 立即购买 Design Kits

Maxim设备 (1)

器件号 产品线
隔离电源
60V、无光耦、隔离反激控制器

设计资料 (4)

标题 类型 尺寸 日期
maxrefdes1040-pcb PDF 2MB 2019-07-09
maxrefdes1040-schematic PDF 21KB 2019-07-09
TTS MAXREFDES Test Results Template_Rev 0_0318 PDF 196KB 2019-07-09
maxrefdes1040-bom PDF 216KB 2019-07-09
日期 类型
2019-07-09

maxrefdes1040-pcb

(PDF, 2MB)

2019-07-09

maxrefdes1040-schematic

(PDF, 21KB)

2019-07-09

TTS MAXREFDES Test Results Template_Rev 0_0318

(PDF, 196KB)

2019-07-09

maxrefdes1040-bom

(PDF, 216KB)

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