Datasheet > ISL6554CBZ

ISL6554CBZ

更新时间： 2024-11-28 22:57:23

品牌	Logo	应用领域
英特矽尔 - INTERSIL		调节器微处理器多相元件
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16页	483K
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Microprocessor CORE Voltage Regulator Using Multi-Phase Buck PWM Control Without Programmable Droop

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ISL6554CBZ 数据手册

ISL6554

Data Sheet

February 11, 2005

FN9003.3

Microprocessor CORE Voltage Regulator

Using Multi-Phase Buck PWM Control

Without Programmable Droop

The ISL6554 is the first controller in the Intersil Multi-Phase

family without the programmable droop feature. The

ISL6554 in combination with the HIP6601A, HIP6602A or

HIP6603A companion gate drivers and Intersil MOSFETs

form a complete solution for high-current, high slew-rate

applications. The ISL6554 regulates output voltage,

balances load currents and provides protective functions for

two to four synchronous-rectified buck-converter channels.

Features

• Multi-Phase Power Conversion

• Precision Channel Current Balance

- Lossless Current Sampling - Uses r

DS(ON)

• Precision CORE Voltage Regulation

- ±1% System Accuracy Over Temperature

- No Programmable Droop

• Microprocessor Voltage Identification Input

- 5-Bit VID Decoder

- 0.95V to 1.70V in 25mV Steps

A novel approach to current sensing is used to reduce

overall solution cost. The voltage developed across the

lower MOSFET’s parasitic on-resistance during conduction

is sampled and fed back to the controller. This lossless

current-sensing approach allows the controller to maintain

phase-current balance between the power channels and

overcurrent protection.

• Fast Transient Response

• Overcurrent Protection

• Selection of 2, 3, or 4 Phase Operation

• High Ripple Frequency (80kHz to 2MHz)

• Pb-Free Available (RoHS Compliant)

A 5-bit DAC allows digital programming of the output voltage

in 25mV steps over a range from 0.95V to 1.70V with a

system accuracy of ±1%. Internal pull ups on each DAC

input make external pull-up resistors unnecessary when

interfacing with open-drain output signals.

Applications

• Power Supply Controller for Intel® Itanium™ Processor

Family

• Voltage Regulator Modules

• Servers and Workstations

The PGOOD signal is held low during soft-start until the

output voltage increases to within 4% of the programmed.

When the CORE voltage falls 9% below the programmed

VID level, an undervoltage condition is detected and results

in PGOOD transitioning low.

Ordering Information

PKG.

PART NUMBER

ISL6554CB

TEMP. (°C)

PACKAGE

DWG. #

0 to 70

20 Ld SOIC

M20.3

In the event of an overvoltage condition, The converter shuts

down and turns ON the lower MOSFETs to clamp and

protect the microprocessor. Overcurrent protection reduces

the regulator RMS output current to 41% of the programmed

overcurrent trip value. These features provide monitoring

and protection for the microprocessor and power system.

ISL6554CB-T

20 Ld SOIC Tape and Reel

ISL6554CBZ (Note)

0 to 70

20 Ld SOIC

(PB-free)

M20.3

ISL6554CBZ-T (Note)

ISL6554CBZA (Note)

20 Ld SOIC Tape and Reel (PB-free)

0 to 70

20 Ld SOIC

(PB-free)

M20.3

Pinout

ISL6554 (SOIC)

TOP VIEW

ISL6554CBZA-T (Note)

20 Ld SOIC Tape and Reel (PB-free)

NOTE: Intersil Pb-free products employ special Pb-free material sets;

molding compounds/die attach materials and 100% matte tin plate

termination finish, which are RoHS compliant and compatible with

both SnPb and Pb-free soldering operations. Intersil Pb-free products

are MSL classified at Pb-free peak reflow temperatures that meet or

exceed the Pb-free requirements of IPC/JEDEC J STD-020C.

VID4

VID3

VCC

PGOOD

PWM4

ISEN4

ISEN1

PWM1

PWM2

ISEN2

ISEN3

PWM3

VID2

VID1

VID0

COMP

FS/DIS

GND

VSEN

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

1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a trademark of Intersil Americas Inc.

Itanium™ is a trademark of Intel Corporation. All other trademarks mentioned are the property of their respective owners.

12 3 4 5 6 7...16

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ISL6554CBZ 替代型号

型号	品牌	替代类型	描述	数据表
ISL6554CB-T	INTERSIL	完全替代	Microprocessor CORE Voltage Regulator Using Multi-Phase Buck PWM Control Without Programma

与ISL6554CBZ相关器件

型号	品牌	获取价格	描述	数据表
ISL6554CBZA	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Using Multi-Phase Buck PWM Control Without Programma
ISL6554CBZA-T	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Using Multi-Phase Buck PWM Control Without Programma
ISL6554CBZ-T	INTERSIL	获取价格	Microprocessor CORE Voltage Regulator Using Multi-Phase Buck PWM Control Without Programma
ISL6556A	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application
ISL6556ACB	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application
ISL6556ACB-T	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application
ISL6556ACBZ	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application
ISL6556ACBZ-T	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application
ISL6556ACR	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application
ISL6556ACR-T	INTERSIL	获取价格	Optimized Multi-Phase PWM Controller with 6-Bit DAC for VR10.X Application

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