Datasheet > ISL6548ACRZ

ISL6548ACRZ

更新时间： 2024-11-28 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		稳压器双倍数据速率控制器
页数	文件大小	规格书
16页	491K
描述
ACPI Regulator/Controller for Dual Channel DDR Memory Systems

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ISL6548ACRZ 数据手册

ISL6548A

Data Sheet

July 22, 2005

FN9189.1

PRELIMINARY

ACPI Regulator/Controller for

Features

Dual Channel DDR Memory Systems

• Generates 5 Regulated Voltages

- Synchronous Buck PWM Controller for DDR V

The ISL6548A provides a complete ACPI compliant power

solution for up to 4 DIMM dual channel DDR/DDR2 Memory

systems. Included are both a synchronous buck controller to

DDQ

- 3A Integrated Sink/Source Linear Regulator with

Accurate V /2 Divider Reference for DDR V

DDQ

supply V

during S0/S1 and S3 states. During S0/S1

- PWM Regulator for GMCH Core

- Sink/Source LDO Regulator for CPU/GMCH V

Termination

DDQ

state, a fully integrated sink-source regulator generates an

accurate (V /2) high current V voltage without the

DDQ TT

need for a negative supply. A second PWM controller, which

requires external MOSFET drivers, is available for regulation

of the GMCH Core voltage. A sink/source LDO controller is

also integrated for the CPU/GMCH V termination voltage

regulation. Another LDO is available for the ICH7 voltage.

- LDO Regulator for ICH7

• ACPI compliant sleep state control

• Glitch-free Transitions During State Changes

• V

PWM Controller Drives Low Cost N-Channel

DDQ

MOSFETs

The switching PWM controller drives two N-Channel

MOSFETs in a synchronous-rectified buck converter

topology. The synchronous buck converter uses voltage-

mode control with fast transient response. The switching

regulator provides a maximum static regulation tolerance of

±2% over line, load, and temperature ranges. The output is

user-adjustable by means of external resistors down to 0.8V.

• 250kHz Constant Frequency Operation

- Both PWM controllers are Phase Shifted 180°

• Tight Output Voltage Regulation

- All Outputs: ±2% Over Temperature

• Fully-Adjustable Outputs with Wide Voltage Range: Down

to 0.8V supports DDR and DDR2 Specifications

An integrated soft-start feature brings all outputs into

regulation in a controlled manner when returning to S0/S1

state from any sleep state. During S0 the VIDPGD signal

• Simple Single-Loop Voltage-Mode PWM Control Design

• Fast PWM Converter Transient Response

• Under and Overvoltage Monitoring

indicates that the GMCH and CPU V termination voltage

is within spec and operational.

• OCP on the V

DDQ

Switching Regulator

All outputs, except V

switching regulator also has overvoltage and overcurrent

protection. Thermal shutdown is integrated.

, have undervoltage protection. The

ICH7

• Integrated Thermal Shutdown Protection

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

•

Single and Dual Channel DDR Memory Power Systems in

ACPI compliant PCs

•

Graphics cards - GPU and memory supplies

• ASIC power supplies

• Embedded processor and I/O supplies

• DSP supplies

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.

All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...16

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与ISL6548ACRZ相关器件

型号	品牌	获取价格	描述	数据表
ISL6548ACRZA	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548ACRZA-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548ACRZ-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548CRZ	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548CRZ	RENESAS	获取价格	DUAL SWITCHING CONTROLLER, 280kHz SWITCHING FREQ-MAX, PQCC28, 6 X 6 MM, MO-220-VJJC, LEAD
ISL6548CRZA	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548CRZA-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6548CRZ-T	RENESAS	获取价格	DUAL SWITCHING CONTROLLER, 280kHz SWITCHING FREQ-MAX, PQCC28, 6 X 6 MM, MO-220-VJJC, LEAD
ISL6548CRZ-T	INTERSIL	获取价格	ACPI Regulator/Controller for Dual Channel DDR Memory Systems
ISL6549	INTERSIL	获取价格	Single 12V Input Supply Dual Regulator Synchronous Rectified Buck PWM and Linear Power Con

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