MAX1718 - 笔记本电脑CPU降压型控制器，用于Intel移动电压定位(IMVP-II)

MAX1718是Maxim美信半导体公司的一款DC-DC开关调节器产品，MAX1718是笔记本电脑CPU降压型控制器，用于Intel移动电压定位(IMVP-II)，本站介绍了MAX1718的封装应用图解、特点和优点、功能等，并给出了与MAX1718相关的Maxim元器件型号供参考。

MAX1718 - 笔记本电脑CPU降压型控制器，用于Intel移动电压定位(IMVP-II) - DC-DC开关调节器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX1718 step-down controller is intended for core CPU DC-DC converters in notebook computers. It features a dynamically adjustable output, ultra-fast transient response, high DC accuracy, and high efficiency needed for leading-edge CPU core power supplies. 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 output voltage can be dynamically adjusted through the 5-bit digital-to-analog converter (DAC) over a 0.6V to 1.75V range. The MAX1718 has an internal multiplexer that accepts three unique 5-bit VID DAC codes correspondingto Performance, Battery, and Suspend modes. Precision slew-rate control provides "just-in-time" arrival at the new DAC setting, minimizing surge currents to and from the battery.

The internal DAC of the MAX1718B is synchronized to the slew-rate clock for improved operation under aggressive power management of newer chipsets and operating systems that can make incomplete mode transitions.

A pair of complementary offset control inputs allows easy compensation for IR drops in PC board traces or creation of a voltage-positioned power supply. Voltage-positioning modifies the load-transient response to reduce output capacitor requirements and total system power dissipation.

Single-stage buck conversion allows these devices 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 MAX1718 is available in a 28-pin QSOP package.

关键特性

以下关键特性由Maxim美信半导体提供：

Quick-PWM Architecture

±1% VOUT Accuracy Over Line and Load

5-Bit On-Board DAC with Input Muxes

Precision-Adjustable VOUT Slew Control

0.6V to 1.75V Output Adjust Range

Precision Offset Control

Supports Voltage-Positioned Applications

2V to 28V Battery Input Range

Requires a Separate 5V Bias Supply

200/300/550/1000kHz Switching Frequency

Over/Undervoltage Protection

Drives Large Synchronous-Rectifier FETs

700µA (typ) ICC Supply Current

2µA (typ) Shutdown Supply Current

2V ±1% Reference Output

VGATE Blanking During Transition

Small 28-Pin QSOP Package

热门应用

从2节至4节Li+电池产生CPU核电源的转换器

5V至CPU核电源转换器

IMVP-II笔记本电脑

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