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MAXREFDES1039: 64W and 48W Dual Output DC-DC Buck Converter Using the MAX17559

MAXREFDES1039

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 MAX17559 is a dual-output, synchronous step-down controller that drives nMOSFETs. The device uses a constant- frequency, peak-current-mode architecture. The two outputs can be configured as independent voltage rails. Input capacitor size is minimized by running the two outputs 180° out of phase. The IC supports current sensing using either an external current-sense resistor for accuracy or an inductor DCR for improved system efficiency. Current foldback or latch-off limits MOSFET power dissipation under short-circuit conditions. The IC provides independent adjustable soft-starts/stops for each output and can start up monotonically into a pre-biased output. The IC can be configured in either PWM or DCM modes of operation, depending on whether constant-frequency operation or light-load efficiency is desired. The IC operates over the -40°C to +125°C temperature range and is available in a lead(Pb)-free, 7mm x 7mm, 32-pin TQFP, package.

特征

  • Wide 4.5V to 60V Input Voltage Range
  • Wide 0.8V to 24V Output Voltage Range
  • RSENSE or Inductor DCR Current-Sensing
  • Fixed 180° Out-of-Phase Operation
  • Adjustable 100kHz to 2.2MHz Switching Frequency
  • Independent Enable and PGOOD
  • Available in a Lead(Pb)-Free 7mm x 7mm, 32-Pin TQFP Package
  • Enhances Power Efficiency
    • Low-Impedance Gate Drives for High Efficiency
  • DCM Operation at Light Loads
  • Auxiliary Bootstrap LDO
  • Operates Reliably in Adverse Industrial Environments
  • Independent Adjustable Soft-Start/Stop or Tracking
  • Current Selectable Foldback or Latch-off Limits
  • MOSFET Heat Dissipation During a Short-Circuit Condition
  • Operates Over the -40°C to +125°C Temperature Range
  • Output Overvoltage and Overtemperature Protections

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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。

 

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 36 51 4 - 16 - Non-Isolated Synchronous Buck

参数化

输入类型 DC
Vin(Min) 36
Vin(Max) 51
Iout(Max) 4
单路/多路输出 -
Vout(V) 16
Pout(W) -
隔离/非隔离 Non-Isolated
拓扑 Synchronous Buck

Maxim设备 (1)

器件号 名称 产品线 购买 设计套件和评估模块
MAX17559 60V、双路输出、同步降压型控制器 开关稳压器 立即购买 Design Kits

Maxim设备 (1)

器件号 产品线
开关稳压器
60V、双路输出、同步降压型控制器

设计资料 (4)

标题 类型 尺寸 日期
maxrefdes1039-pcb PDF 2MB 2019-07-09
TTS MAXREFDES Test Results Template_Rev 0_0318 PDF 304KB 2019-07-09
maxrefdes1039-schematic PDF 167KB 2019-07-09
maxrefdes1039-bom PDF 218KB 2019-07-09
日期 类型
2019-07-09

maxrefdes1039-pcb

(PDF, 2MB)

2019-07-09

TTS MAXREFDES Test Results Template_Rev 0_0318

(PDF, 304KB)

2019-07-09

maxrefdes1039-schematic

(PDF, 167KB)

2019-07-09

maxrefdes1039-bom

(PDF, 218KB)

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