Datasheet > EL7571

EL7571

更新时间： 2024-11-17 22:50:59

品牌	Logo	应用领域
英特矽尔 - INTERSIL		控制器
页数	文件大小	规格书
19页	309K
描述
Programmable PWM Controller

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EL7571 数据手册

EL7571

Data Sheet

October 25, 2004

FN7298.1

Programmable PWM Controller

Features

The EL7571 is a flexible, high efficiency, current mode, PWM

step down controller. It incorporates five bit DAC adjustable

output voltage control which conforms to the Intel Voltage

Regulation Module (VRM) Specification for Pentium® II and

Pentium® Pro class processors. The controller employs

synchronous rectification to deliver efficiencies greater than

90% over a wide range of supply voltages and load

conditions. The on-board oscillator frequency is externally

adjustable, or may be slaved to a system clock, allowing

optimization of RFI performance in critical applications. In

single supply operation, the high side FET driver supports

boot-strapped operation. For maximum flexibility, system

operation is possible from either a 5V rail, a single 12V rail,

or dual supply rails with the controller operating from 12V

and the power FETs from 5V.

• Pentium® II Compatible

• 5 bit DAC Controlled Output Voltage

• Greater than 90% Efficiency

• 4.5V to 12.6V Input Range

• Dual NMOS Power FET Drivers

• Fixed frequency, Current Mode Control

• Adjustable Oscillator with External Sync. Capability

• Synchronous Switching

• Internal Soft-Start

• User Adjustable Slope Compensation

• Pulse by Pulse Current Limiting

• 1% Typical Output Accuracy

• Power Good Signal

Pinout

5Ω

• Output Power Down

• Over Voltage Protection

C6 0.1µF

ENABLE

OTEN

CSLOPE

COSC

REF

VH1 20

HSD 19

LX 18

C3 240pF

• Pb-Free Available (RoHS Compliant)

4.5V

12.6V

1.5µH

1µF 1000µ

F x3

Applications

OUT

1.3V to

3.5V

1.4V

• Pentium® II Voltage Regulation Modules (VRMs)

• PC Motherboards

VIN 17

5Ω

0.1µF

5.1µH

PWRGD

VIDO

VINP 16

LSD 15

GNDP 14

GND 13

CS 12

POWER

GOOD

1µF

1000µF

• DC/DC Converters

• GTL Bus Termination

VID1

Voltage

I.D. (VID

(0:4))

• Secondary Regulation

VID2

VID3

Ordering Information

10 VID4

FB 11

TAPE AND

PART NUMBER

EL7571CM

PACKAGE

20-Pin SO

REEL

PKG. DWG. #

MDP0027

Q1, Q2: Siliconix, Si4410, x2

C1: Sanyo, 16MV 1000GX, 1000µF x3

C2: Sanyo, 6MV 1000GX, 1000µF x6

L1: Pulse Engineering, PE-53700, 5.1µH

L2: Micrometals, T30-26, 7T AWG #20, 1.5µH

R1: Dale, WSL-25-12, 15mΩ, x2

D1: BAV99

13”

EL7571CM-T13

MDP0027

EL7571CMZ

(See Note)

20-Pin SO

(Pb-free)

MDP0027

D2: IR, 32CTQ030

EL7571CMZ-T13

(See Note)

20-Pin SO

(Pb-free)

13”

MDP0027

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.

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 registered trademark of Intersil Americas Inc.

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

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与EL7571相关器件

型号	品牌	获取价格	描述	数据表
EL7571C	ELANTEC	获取价格	Programmable PWM Controller
EL7571CM	INTERSIL	获取价格	Programmable PWM Controller
EL7571CM-T13	INTERSIL	获取价格	Programmable PWM Controller
EL7571CMZ	INTERSIL	获取价格	Programmable PWM Controller
EL7571CMZ-T13	INTERSIL	获取价格	Programmable PWM Controller
EL7571C-T13	RENESAS	获取价格	3A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO20, SO-20
EL7581	INTERSIL	获取价格	3-Channel DC-DC Converter
EL7581_06	INTERSIL	获取价格	3-Channel DC/DC Converter
EL7581CRE	RENESAS	获取价格	SWITCHING REGULATOR, 720kHz SWITCHING FREQ-MAX, PDSO20, HTSSOP-20
EL7581IRE	INTERSIL	获取价格	3-Channel DC-DC Converter

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