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FN9012

更新时间： 2024-09-23 22:29:15

品牌	Logo	应用领域
英特矽尔 - INTERSIL		微处理器控制器
页数	文件大小	规格书
5页	45K
描述
Microprocessor CORE Voltage Regulator Two-Phase Buck PWM Controller

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FN9012 数据手册

ISL6562

Data Sheet

March 2001

File Number 9012

Microprocessor CORE Voltage Regulator

Two-Phase Buck PWM Controller

Features

• Two-Phase Power Conversion

The ISL6562 two-phase current mode, PWM control IC

together with companion gate drivers, the HIP6601A,

HIP6602A, HIP6603A or HIP6604 and MOSFETs provides a

precision voltage regulation system for advanced

• Precision Channel Current Sharing

• Precision CORE Voltage Regulation

- ±0.8% Accuracy

microprocessors. Two-phase power conversion is a marked

departure from earlier single phase converter conﬁgurations

previously employed to satisfy the ever increasing current

demands of modern microprocessors. Multi-phase

• Microprocessor Voltage Identiﬁcation Input

- 5-Bit VID Input

- 1.050V to 1.825V in 25mV Steps

- Programmable “Droop” Voltage

converters, by distributing the power and load current results

in smaller and lower cost transistors with fewer input and

output capacitors. These reductions accrue from the higher

effective conversion frequency with higher frequency ripple

current due to the phase interleaving process of this

topology. For example, a two phase converter operating at

350kHz per phase will have a ripple frequency of 700kHz.

Moreover, greater converter bandwidth of this design results

in faster response to load transients.

• Fast Transient Recovery Time

• Over Current Protection

• High Ripple Frequency, (Channel Frequency

Times Number of Channels). . . . . . . . . . . . .100kHz to 2MHz

Applications

• VRM8.5 Modules

Outstanding features of this controller IC include

programmable VID codes from the microprocessor that

range from 1.050V to 1.825V with an accuracy of ±0.8%.

Pull up currents on these VID pins eliminates the need for

external pull up resistors.

• Intel® Tualatin Processor Voltage Regulator

• Low Output Voltage, High Current DC/DC Converters

Related Literature

• Technical Brief TB363 “Guidelines for Handling and

Processing Moisture Sensitive Surface Mount Devices

(SMDs)”

Another feature of this controller IC is the PWRGD monitor

circuit which is held low until the CORE voltage increases, to

within 18% of the programmed voltage. Over-voltage, 24%

above programmed CORE voltage, results in the PWRGD

output going low to indicate that the CORE is above the

speciﬁed limit. Under voltage is also detected and results in

PWRGD going low if the CORE voltage falls 18% below the

programmed level. Over-current protection folds back the

output voltage to 95mV, reducing the regulator dissipation.

These features provide monitoring and protection for the

microprocessor and power system.

Pinout

ISL6562 (SOIC)

TOP VIEW

VID3

VID2

16 VCC

15 REF

14 CS-

VID1

VID0

PWM1

VID25mV

COMP

12 PWM2

11 CS+

Ordering Information

PART NUMBER

TEMP. ( C)

PACKAGE

PKG. NO.

10 PWRGD

GND

ISL6562CB

0 to 70

16 Ld SOIC

M16.15

ISL6562CB-T

16 Ld SOIC Tape and Reel

Evaluation Platform

ISL6560/62EVAL1

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.

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