Datasheet > AIC1571CS

AIC1571CS

更新时间： 2024-09-24 22:34:39

品牌	Logo	应用领域
沛亨 - AIC		调节器控制器
页数	文件大小	规格书
18页	458K
描述
5-bit DAC, Synchronous PWM Power Regulator with Dual Linear Controllers

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AIC1571CS 数据手册

AIC1571

5-bit DAC, Synchronous PWM Power

Regulator with Dual Linear Controllers

FEATURES

DESCRIPTION

ꢀ

Provides 3 Regulated Voltages for Microproces-

sor Core, Clock and GTL Power.

ꢀ

The AIC1571 combines a synchronous voltage

mode controller with two linear controllers as well

as the monitoring and protection functions in this

chip. The PWM controller regulates the microproc-

essor core voltage with a synchronous rectified

buck converter. One linear controller regulates

power for the GTL bus and the other linear con-

troller provides power for the clock driver circuit or

memory (1.8V)

Simple Voltage-Mode PWM Control.

Dual N-Channel MOSFET Synchronous Driver.

Operates from +3.3V, +5V and +12V Inputs.

Fast Transient Response.

ꢀ

Full 0% to 100% Duty Ratios.

±1.0% Output Voltage for VCORE and 2.0%

Output Voltage Reference for VCLK and VGTL.

TTL Compatible 5-bit Digital-to-Analog Core Out-

put Voltage Selection. Range from 1.3V to 3.5V.

ꢀ

0.1V Steps from 2.1V to 3.5V.

0.05V Steps from 1.3V to 2.05V.

An integrated 5 bit D/A converter that adjusts the

core PWM output voltage from 2.1V to 3.5V in 0.1V

increments and from 1.3V to 2.05V in 0.05V incre-

ments. The linear regulator uses an internal driver

device to provide 2.5V±2.5%. The linear controller

drives with an external N-channel MOSEFET to

provide 1.5V±2.5%.

Adjustable Current Limit without External Sense

ꢀ

Resistor.

Microprocessor Core Voltage Protection against

Shorted MOSFET.

Power Good Output Voltage Monitor.

ꢀ

Over-Voltage and Over-Current Fault Monitors.

200KHz Free-Running Oscillator Programmable

up to 350KHz.

This chip monitors all the output voltages. Power

Good signal is issued when the core voltage is

within ±10% of the DAC setting and the other levels

are above their under-voltage levels. Over-voltage

protection for the core output uses the lower N-

channel MOSFET to prevent output voltage above

115% of the DAC setting.

APPLICATIONS

ꢀ

Full Motherboard Power Regulation for Comput-

ers.

ꢀ

Power Integrations for 3 Output Power System.

ꢀ

The PWM over-current function monitors the out-

put current by using the voltage drop across the

upper MOSFET’s R_DS(on), eliminating the need for a

current sensing resistor.

Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC

DS-1571-00 Oct 9, 00 TEL: 886-3-5772500 FAX: 886-3-5772510

www.analog.com.tw

12 3 4 5 6 7...18

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与AIC1571CS相关器件

型号	品牌	获取价格	描述	数据表
AIC1573	AIC	获取价格	5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear
AIC1573CS	AIC	获取价格	5-bit DAC, Synchronous PWM Power Regulator with Simple PWM Power Regulator, LDO And Linear
AIC1574	AIC	获取价格	5-bit DAC, Synchronous PWM Power Regulator with Triple Linear Controllers
AIC1574CS	AIC	获取价格	5-bit DAC, Synchronous PWM Power Regulator with Triple Linear Controllers
AIC1577	AIC	获取价格	External NMOS Step-Down PWM Controller
AIC1577-COTB	AIC	获取价格	External NMOS Step-Down PWM Controller
AIC1577-COTR	AIC	获取价格	External NMOS Step-Down PWM Controller
AIC1577-CSTB	AIC	获取价格	External NMOS Step-Down PWM Controller
AIC1577-CSTR	AIC	获取价格	External NMOS Step-Down PWM Controller
AIC1577-POTB	AIC	获取价格	External NMOS Step-Down PWM Controller

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