DataSheet.jp

ISL6244HR の電気的特性と機能

ISL6244HRのメーカーはIntersil Corporationです、この部品の機能は「Multi-Phase PWM Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6244HR
部品説明 Multi-Phase PWM Controller
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




このページの下部にプレビューとISL6244HRダウンロード(pdfファイル)リンクがあります。

Total 25 pages

No Preview Available !

ISL6244HR Datasheet, ISL6244HR PDF,ピン配置, 機能
®
Data Sheet
November 2003
ISL6244
FN9106.1
Multi-Phase PWM Controller
The ISL6244 provides core-voltage regulation by driving 2 to
4 interleaved synchronous-rectified buck-converter channels
in parallel. Interleaving the channel timing results in
increased ripple frequency which reduces input and output
ripple currents. The reduction in ripple results in lower
component cost, reduced dissipation, and a smaller
implementation area.
The ISL6244 uses cost and space-saving rDS(ON) sensing
for channel current balance, active voltage positioning, and
over-current protection. Output voltage is monitored by an
internal differential remote sense amplifier. A high-bandwidth
error amplifier drives the output voltage to match the
programmed 5-bit DAC reference voltage. The resulting
compensation signal guides the creation of pulse width
modulated (PWM) signals to control companion Intersil
MOSFET drivers. The OFS pin allows direct offset of the
DAC voltage from 0V to 100mV using a single external
resistor. The entire system is trimmed to ensure a system
accuracy of ± 1%.
Outstanding features of this controller IC include
Dynamic VIDTM technology allowing seamless on-the-fly VID
changing without the need of any external components.
Battery “feed-forward” is provided to allow for traditional
control schemes over total input voltage variation. Output
voltage “droop” or active voltage positioning is optional.
When employed, it allows the reduction in size and cost of
the output capacitors required to support load transients. A
threshold-sensitive enable input allows the use of an
external resistor divider for start-up coordination with Intersil
MOSFET drivers or any other devices powered from a
separate supply.
Superior over-voltage protection is achieved by gating on the
lower MOSFET of all phases to reduce the output voltage.
Under-voltage conditions are detected, but PWM operation
is not disrupted. Over-current conditions cause a hiccup-
mode response as the controller repeatedly tries to restart.
After a set number of failed startup attempts, the controller
latches off. A power good logic signal indicates when the
converter output is between the UV and OV thresholds.
Features
• Multi-Phase Power Conversion
- 2, 3 or 4 Phase Operation
• Active Channel Current Balancing
• Precision rDS(ON) Current Sharing
- Lossless
- Low Cost
• Precision CORE Voltage Regulation
- Differential Remote Output Voltage Sensing
- Programmable Reference Offset
- ± 1% System Accuracy
• Microprocessor Voltage Identification Input
- 5-Bit VID Input
- 0.800V to 1.550V in 25mV Steps
- Dynamic VID Technology
• Programmable Droop Voltage
• Excellent Dynamic Response
- Combined Input Voltage Feed-Forward and Pulse-by-
Pulse Average Current Mode
• Over Current Protection
• Digital Soft Start
• Threshold Sensitive Enable Input
• High Ripple Frequency (160kHz to 4MHz)
• Lead-free product now available suffix (Z)
• QFN Package:
- Compliant to JEDEC PUB95 MO-220 QFN - Quad Flat
No Leads - Package Outline
- Near Chip Scale Package footprint, which improves PCB
efficiency and has a thinner profile
Applications
• AMD Hammer Family Processor Voltage Regulator
• Low Output Voltage, High Current DC-DC Converters
• Voltage Regulator Modules
Ordering Information
PART NUMBER TEMP. (oC) PACKAGE
PKG. DWG. #
ISL6244CR
0 to 70 32 Ld 5x5 QFN L32.5x5
ISL6244CRZ
0 to 70 32 Ld 5x5 QFN L32.5x5
ISL6244HR
-10 to 100 32 Ld 5x5 QFN L32.5x5
ISL6244HRZ
-10 to 100 32 Ld 5x5 QFN L32.5x5
NOTE: Add “-T” suffix for 32 QFN 5x5 Tape and Reel packages.
Intersil Lead Free products employ special lead free material sets;
molding compounds/die attach materials and 100% matte tin plate
termination finish, which is compatible with both SnPb and lead free
soldering operations. Intersil Lead Free products are MSL classified
at lead free peak reflow temperatures that meet or exceed the lead
free requirements of IPC/JEDEC J Std-020B.
1 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.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved. Dynamic VID™ is a trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6244HR pdf, ピン配列
ISL6244
Absolute Maximum Ratings
Supply Voltage, VCC (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . .+7V
Input, Output, or I/O Voltage . . . . . . . . . . GND -0.3V to VCC + 0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class II
Operating Conditions
Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V ±5%
Ambient Temperature. . . . . . . . . . . . . . . . . . . . . . . . -10oC to 100oC
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .125oC
Thermal Information
Thermal Resistance
θJA (oC/W) θJC (oC/W)
QFN Package (Note 3, 5) . . . . . . . . . .
32
4
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Storage Temperature Range . . . . . . . . . . -65oC to 150oC
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational section of this specification is not implied.
NOTES:
1. For VCC > 5.5V, current must be limited to 25mA.
2. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
3. Tolerance does not include the VID offset error or any external component tolerances.
4. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Operating Conditions: VCC = 5V, TA = -10oC to 100oC. Unless Otherwise Specified.
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
VCC SUPPLY CURRENT
Nominal Supply
Shutdown Supply
POWER-ON RESET AND ENABLE
VCC = 5VDC; EN = 5VDC; RT = 100k± 1%
VCC = 5VDC; EN = 0VDC; RT = 100k± 1%
8.0 10.8 14.0 mA
8.0 10.3 13.0 mA
POR Threshold
VCC Rising
4.25 4.35 4.60
V
VCC Falling
3.75 3.85 4.00
V
ENABLE Threshold
EN Rising
1.215 1.240 1.265
V
Hysteresis
82 92 102 mV
REFERENCE VOLTAGE AND DAC
System Accuracy (Note 3)
-1.2 -
1.2 %VID
0 to 70°C
-1 - 1 %VID
VID on Fly Step Size
VID Pull Up
RT = 100k
- 25 - mV
-30 -20 -10 µA
VID Input Low Level
- - 0.8 V
VID Input High Level
2.0 - - V
PIN-ADJUSTABLE OFFSET
OFS Current
- 100 -
µA
Offset Accuracy
ROFS = 5k± 1%
92.0 100.0 108.0 mV
ROFS = 5k± 1% , 0 to 70°C
94.0 100.0 106.0
Maximum Offset
- - 100.0 mV
OSCILLATOR
Accuracy
-12.5 - 12.5 %
RT = 100K
245 280 315 kHz
Adjustment Range
0.08 -
1.0 MHz
VFF Range
0.5 - 2.5 V
Max Duty Cycle
- 75 - %
3


3Pages


ISL6244HR 電子部品, 半導体
ISL6244
Typical Operating Performance (Continued)
100
90
1.650
Vo+ (AMD SPEC)
1.600
80
70
60
Vbat = 8.4
Vbat = 10.8
Vbat = 14.4
Vbat = 19
Vbat = 21
50
0 10 20 30 40 50 60
OUTPUT CURRENT (A)
FIGURE 9. ISL6244 EFFICIENCY vs LOAD
1.550
1.500
Vo- (AMD SPEC)
1.450
TARGET
VBAT 21V
1.400
0
20 40
OUTPUT CURRENT (A)
FIGURE 10. ISL6244 DROOP: VBAT = 21V
60
6

6 Page



ページ 合計 : 25 ページ
 
PDF
ダウンロード
[ ISL6244HR データシート.PDF ]


データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。


共有リンク

Link :


部品番号部品説明メーカ
ISL6244HR

Multi-Phase PWM Controller

Intersil Corporation
Intersil Corporation
ISL6244HRZ

Multi-Phase PWM Controller

Intersil Corporation
Intersil Corporation


www.DataSheet.jp    |   2020   |  メール    |   最新    |   Sitemap