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IR3629AのメーカーはInternational Rectifierです、この部品の機能は「HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER」です。 |
部品番号 | IR3629A |
| |
部品説明 | HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER | ||
メーカ | International Rectifier | ||
ロゴ | |||
このページの下部にプレビューとIR3629Aダウンロード(pdfファイル)リンクがあります。 Total 23 pages
Data Sheet No. PD94726
www.DataSheet4U.com
IR3629/IR3629A MPbF
HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER
WITH POWER GOOD OUTPUT
Features
• Internal 600kHz Oscillator (300kHz “A version”)
• Operates with Single 5V or 12V Supply
• Programmable Over Current Protection
• Hiccup Current Limit Using MOSFET RDS(on)
sensing
• Precision Reference Voltage (0.6V)
• Programmable Soft-Start
• Programmable PGood output
• Pre-Bias Start-up
• Thermal Protection
• 12-Lead MLP Package
Applications
• Distributed Point-of-Loads
• Embedded Systems
• Storage Systems
• DDR Applications
• Graphics Cards
• Computing Peripheral Voltage Regulators
• General DC-DC Converters
Description
The IR3629/IR3629A is a PWM controller
designed for high performance synchronous Buck
DC/DC applications. The IR3629/IR3629A drives
a pair of external N-MOSFETs using a fixed
600kHz (300kHz “A version”) switching frequency
allowing the use of small external components.
The output voltage can be precisely regulated
using the internal 0.6V reference voltage for low
voltage applications. Protection such as Pre-Bias
startup, hiccup current limit and thermal shutdown
provide the required system level security in the
event of fault conditions.
11/26/2007
Fig. 1: Typical application Circuit
ORDERING INFORMATION
PKG PACKAGE
PIN
DESIG DESCRIPTION
COUNT
M IR3629/IR3629AMPBF 12
M IR3629/IR3629AMTRPBF 12
PARTS
PARTS
T&R
PER TUBE PER REEL ORIENTATION
122 -------
-------- 3000 Figure A
1 Page www.DataSheet4U.com
Block Diagram
IR3629/IR3629A MPbF
Fig. 2: Simplified block diagram of the IR3629/IR3629A
11/26/2007
3
3Pages www.DataSheet4U.com
IR3629/IR3629A MPbF
Parameter
SYM
Error Amplifier
Input Bias Current
Input Bias Current
Source/Sink Current
Transconductance
IFB1
IFB2
I(source/Sink)
gm
Soft Start/SD
Soft Start Current
ISS
Shutdown
Threshold
Output
SD
Over Current Protection
OCSET Current
Hiccup Current
Hiccup Duty Cycle
IOCSET
IHiccup
Hiccup(duty)
Power Good
Vsns Lower Trip Point
Hysteresis
Pgood Output Low
Voltage
Input Bias Curent
Vsns(trip)
PGood(Hys)
PG(voltage)
ISns
Test Condition
SS=3V
SS=0V
SS=0V
Note3
IHiccup / ISS , Note3
Vsns ramping Down
IPgood =4mA
Min TYP MAX Units
20
50
1000
-0.1
35
70
1300
-0.5
50
90
1600
μA
μmho
15 20 28 μA
0.25
V
15
0.35
15
0
20
3
15
0.38
27.5
0.25
0.3
26
0.41
40
0.5
1
μA
%
V
mV
V
μA
Thermal Shutdown
Thermal
Threshold
Thermal
Hysteresis
Shutdown
Shutdown
Output Drivers
LO, Drive Rise Time
HI Drive Rise Time
TD
TD(Hys)
Tr(Lo)
Tr(Hi)
Note3
Note3
CL=1.5nF, See Fig 3
CL=1.5nF, See Fig 3
140
20
30 60
30 60
oC
LO Drive Fall Time
HI Drive Fall Time
Dead Band Time
Tf(Lo)
Tf(Hi)
Tdead
CL=1.5nF, See Fig 3
CL=1.5nF, See Fig 3
See Fig 3
30 60
30 60
10 50 100
ns
Note2: Cold temperature performance is guaranteed via correlation using statistical quality control.
Not tested in production.
Note3: Guaranteed by Design but not tested in production.
9V
High Side Driver
(HDrv)
2V
Tr
Tf
9V
Low Side Driver
(LDrv)
2V
Deadband
H_to_L
Tr
Tf
Deadband
L_to_H
11/26/2007
Fig. 3: Definition of Rise/Fall time and Deadband Time
6
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ページ | 合計 : 23 ページ | ||
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PDF ダウンロード | [ IR3629A 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。 |
部品番号 | 部品説明 | メーカ |
IR3629A | HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER | International Rectifier |
IR3629A | HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER | International Rectifier |
IR3629MPBF | HIGH FREQUENCY SYNCHRONOUS PWM BUCK CONTROLLER | International Rectifier |