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超高效率、双路降压型控制器,用于笔记本电脑

低成本、具有快速响应特性、精度为1%的电源控制器,用于下一代笔记本CPU核以及I/O供电

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主要特征

简化框图

Technical Docs

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在Maxim的知识库中搜索技术问题的答案

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采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com

主要特征

  • Ultra-High Efficiency
  • No Current-Sense Resistor (lossless ILIMIT)
  • Quick-PWM with 100ns Load-Step Response
  • 1% VOUT Accuracy over Line and Load
  • Dual-Mode Fixed 1.8V/3.3V/Adj or 2.5V/Adj Outputs
  • Adjustable 1V to 5.5V Output Range
  • 2V to 28V Battery Input Range
  • 200/300/420/540kHz Nominal Switching Frequency
  • Over/Undervoltage Protection
  • 1.7ms Digital Soft-Start
  • Drives Large Synchronous-Rectifier FETs
  • Power-Good Indicator

应用/用途

  • 1.8V与2.5V I/O电源
  • 芯片组/RAM供电,电压可低至1V
  • CPU核电源
  • 笔记本电脑

描述

The MAX1715 PWM controller provides the high efficiency, excellent transient response, and high DC output accuracy needed for stepping down high-voltage batteries to generate low-voltage CPU core, I/O, and chipset RAM supplies in notebook computers.

Maxim's proprietary Quick-PWM™ quick-response, constant-on-time PWM control scheme handles wide input/output voltage ratios with ease and provides 100ns "instant-on" response to load transients while maintaining a relatively constant switching frequency.

The MAX1715 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Efficiency is further enhanced by its ability to drive very large synchronous-rectifier MOSFETs.

Single-stage buck conversion allows this device to directly step down high-voltage batteries for the highest possible efficiency. Alternatively, two-stage conversion (stepping down the +5V system supply instead of the battery) at a higher switching frequency allows the minimum possible physical size.

The MAX1715 is intended for CPU core, chipset, DRAM, or other low-voltage supplies as low as 1V. The MAX1715 is available in a 28-pin QSOP package. For applications requiring VID compliance or DAC control of output voltage, refer to the MAX1710/MAX1711 data sheet. For a single-output version, refer to the MAX1714 data sheet.

简化框图

MAX1715:最简工作电路 MAX1715:最简工作电路 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心

采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com