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IR3651SPBF の電気的特性と機能

IR3651SPBFのメーカーはInternational Rectifierです、この部品の機能は「HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER」です。


製品の詳細 ( Datasheet PDF )

部品番号 IR3651SPBF
部品説明 HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER
メーカ International Rectifier
ロゴ International Rectifier ロゴ 




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IR3651SPBF Datasheet, IR3651SPBF PDF,ピン配置, 機能
www.DataSheet4U.com
Data Sheet No.PD94720
IR3651SPbF
HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER
Features
High Voltage Operating up to 75V
Programmable Switching Frequency up to 400kHz
1A Output Drive Capability
Precision Reference Voltage (1.25V)
Programmable Soft-Start
Programmable Over Current Protection
Hiccup Current Limit Using MOSFET RDS(on)
sensing
External Frequency Synchronization
14-pin SOIC Package
Applications
48V non-isolated DC to DC Converter
Embedded Telecom Systems
Networking and Computing Voltage Regulator
Distributed Point of Load Power Architectures
General high voltage DC/DC Converters
Description
The IR3651 is a high voltage PWM controller
designed for high performance synchronous Buck
DC/DC applications. The IR3651 drives a pair of
external N-MOSFETs using a programmable
switching frequency up to 400kHz allows flexibility
to tune the operation of the IC to meet system
level requirements, and synchronization allows
the simplification of system level filter design. The
output voltage can be precisely regulated using
the internal 1.25V reference voltage for low
voltage applications. Protection such as under
voltage lockout and hiccup current limit are
provided to give required system level security in
the event of fault conditions.
Vaux=12V
Vin: 12V-75V
C2
R5
C6
10/11/2006
C3
DRVcc
Vcc
Vb
HDrv
SYNC
Vs
Rt IR3651S
OCset
SS/SD
LDrv
PGnd
Gnd Comp Fb
C1
C4
Q1
ROCset
Q2
C7 R4
L1
C8
Vout
C5 R1 R3
C9
R2
C10
Typical application Circuit
ORDERING INFORMATION
PKG PACKAGE
DESIG DESCRIPTION
S IR3651SPBF
S IR3651STRPBF
PIN
COUNT
14
14
PARTS
PER TUBE
55
--------
PARTS
PER REEL
-------
2500
T&R
ORIANTAION
Fig A

1 Page





IR3651SPBF pdf, ピン配列
Block Diagram
IR3651SPbF
Vcc 11
Gnd 13
SYNC 4
Rt 14
4.17V
0.25V
Bias
Generator
POR
3V
1.25V
Rt
Oscillator
Ct
POR
3V
20uA
S
Q
R Reset Dom
Vcc
LOW
VOLTAGE
LEVEL
SHIFT
HIGH
VOLTAGE
LEVEL
SHIFT
CIRCUIT
UV
DETECT
UV Q
S
R
SS/SD 3
3uA
1.25V
Fb 1
25K
25K
OCP
64uA Max
Error Comp
Error Amp
Comp 2
0.3V
SS POR
Vcc
LOW
VOLTAGE
LEVEL
SHIFT
R
Q PBias
S
UV
DETECT
DELAY
OCP
8 Vb
9 HDrv
10 Vs
7 DRVcc
6 LDrv
5 PGND
10uA
12 OCset
Fig. 1: Simplified block diagram of the IR3651
10/11/2006
3


3Pages


IR3651SPBF 電子部品, 半導体
IR3651SPbF
Parameter
SYM
Test Condition
Error Amplifier
Input Bias Current
Source/Sink Current
Transconductance
IFB
I(source/Sink)
gm
SS=3V, Fb=1V
Soft Start/SD
Soft Start Current
ISS
Shutdown Output
Threshold
SD
Over Current Protection
OCSET Current
Hiccup Current
Hiccup Duty Cycle
IOCSET
IHiccup
Hiccup(duty)
Output Drivers
LO, Drive Rise Time
Tr(Lo)
HI Drive Rise Time
Tr(Hi)
LO Drive Fall Time
Tf(Lo)
HI Drive Fall Time
Dead Band Time
Tf(Hi)
Tdead
SS=0V
Note2
IHiccup / ISS , Note2
CL=1.5nF
See Fig 2, Note2
CL=1.5nF,
See Fig 2, Note2
CL=1.5nF
See Fig 2,Note2
CL=1.5nF,
See Fig 2,Note2
See Fig 2
Upper Driver Source
Current
Upper Driver Sink
Curret
Lower Driver Source
Current
Lower Driver Sink
Current
Iupper(source)
Iupper(sink)
Ilower(source)
Ilower(sink)
HDrv short circuit pulsed
current. PW<10us
HDrv short circuit pulsed
current. PW<10us
LDrv short circuit pulsed
current. PW<10us
LDrv short circuit pulsed
current. PW<10us
Min
50
1500
15
7.5
30
TYP
-0.1
85
2400
20
10
3
10
10
10
10
45
1.0
1.0
1.0
1.0
MAX
-0.4
120
3000
25
0.25
12.5
5
20
20
20
20
100
Units
µA
µA
µmho
µA
V
µA
µA
%
ns
ns
ns
ns
ns
A
A
A
A
Note1: Cold temperature performance is guaranteed via correlation using statistical quality control. Not tested in production.
Note2: Guaranteed by Design but not tested in production.
Tr
9V
High Side Driver
(HDrv)
2V
Tf
9V
Low Side Driver
(LDrv)
2V
Deadband
H_to_L
Tr
Tf
Deadband
L_to_H
Fig. 2: Definition of Rise/Fall time and Deadband Time
10/11/2006
6

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共有リンク

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部品番号部品説明メーカ
IR3651SPBF

HIGH VOLTAGE SYNCHRONOUS PWM BUCK CONTROLLER

International Rectifier
International Rectifier


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