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IRU3047CWPBF

Description
Dual Switching Controller, Voltage-mode, 0.5A, 220kHz Switching Freq-Max, PDSO20, PLASTIC, SOIC-20
CategoryPower/power management    The power supply circuit   
File Size130KB,19 Pages
ManufacturerInternational Rectifier ( Infineon )
Websitehttp://www.irf.com/
Environmental Compliance
Download Datasheet Parametric Compare View All

IRU3047CWPBF Overview

Dual Switching Controller, Voltage-mode, 0.5A, 220kHz Switching Freq-Max, PDSO20, PLASTIC, SOIC-20

IRU3047CWPBF Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerInternational Rectifier ( Infineon )
Parts packaging codeSOIC
package instructionSOP,
Contacts20
Reach Compliance Codecompliant
ECCN codeEAR99
Other featuresCAN BE CONFIGURED AS 2-INDEPENDENT OR 2-PHASE PWM CONTROLLER
Analog Integrated Circuits - Other TypesDUAL SWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage25 V
Minimum input voltage4 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G20
length12.7885 mm
Number of functions1
Number of terminals20
Maximum operating temperature70 °C
Minimum operating temperature
Maximum output current0.5 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height2.642 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency220 kHz
Temperature levelCOMMERCIAL
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature40
width7.5 mm
Data Sheet No. PD94252
IRU3047
DUAL SYNCHRONOUS PWM CONTROLLER WITH
CURRENT SHARING CIRCUITRY AND LDO CONTROLLER
PRELIMINARY DATA SHEET
FEATURES
Dual Synchronous Controller in 20-Pin Package
with 1808 out-of-phase operation
LDO Controller with 40mA drive
Can be configured as 2-Independent or 2-Phase
PWM Controller
Programmable Current Sharing in 2-Phase Configu-
ration
Flexible, Same or Separate Supply Operation
Operation from 4V to 25V Input
Internal 200KHz Oscillator per phase
Soft-Start controls all outputs
Fixed Frequency Voltage Mode
500mA Peak Output Drive Capability
Short Circuit Protection for All Outputs
Power Good Output
DESCRIPTION
The IRU3047 IC combines a Dual synchronous Buck
controller and a linear regulator controller, providing a
cost-effective, high performance and flexible solution for
multi-output applications. The Dual synchronous con-
troller can be configured as 2-independent or 2-phase
controller. In 2-phase configuration, the IRU3047 provides
a programmable current sharing which is ideal when the
output power exceeds any single input power budget.
IRU3047 provides a separate adjustable output by driv-
ing a switch as a linear regulator. This device features an
internal 200KHz oscillator, under-voltage lockout for all
input supplies, an external programmable soft-start func-
tion as well as output under-voltage detection that latches
off the device when an output short is detected.
APPLICATIONS
Dual-Phase Power Supply
DDR Memory Source Sink Vtt Application
Graphic Card
Hard Disk Drive
Power supplies requiring multiple outputs
TYPICAL APPLICATION
12V
L1
5V
C1
C2
C3
C4
V
CL
Vcc
C5
3.3V
C6
V
OUT2
C7
R2
C8
C9
R3
R4
Comp2
HDrv2
Comp1
Q1
R1
Fb3
V
OUT3
LDrv1
Q3
VcH1
VcH2
HDrv1
Q2
C13
C12
L2
D1
D2
C11
C14
L3
R5
V
OUT1
C16
U1
IRU3047
PGnd
V
REF
Vp2
Fb1
Fb2
C17
Q4
L4
R9
R7
R8
PGood
C10
PGood
SS
LDrv2
Gnd
Q5
Figure 1 - Typical application of IRU3047 configured as 2-phase converter.
PACKAGE ORDER INFORMATION
T
A
(°C)
0 To 70
Rev. 1.0
09/09/02
DEVICE
IRU3047CW
PACKAGE
20-Pin Plastic SOIC (W)
www.irf.com
1

IRU3047CWPBF Related Products

IRU3047CWPBF IRU3047CWTR
Description Dual Switching Controller, Voltage-mode, 0.5A, 220kHz Switching Freq-Max, PDSO20, PLASTIC, SOIC-20 IC reg ctrlr buck pwm VM 20-soic
Maker International Rectifier ( Infineon ) International Rectifier ( Infineon )
Parts packaging code SOIC SOIC
package instruction SOP, SOP,
Contacts 20 20
Reach Compliance Code compliant unknow
ECCN code EAR99 EAR99
Other features CAN BE CONFIGURED AS 2-INDEPENDENT OR 2-PHASE PWM CONTROLLER CAN BE CONFIGURED AS 2-INDEPENDENT OR 2-PHASE PWM CONTROLLER
Analog Integrated Circuits - Other Types DUAL SWITCHING CONTROLLER DUAL SWITCHING CONTROLLER
control mode VOLTAGE-MODE VOLTAGE-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 25 V 25 V
Minimum input voltage 4 V 4 V
Nominal input voltage 5 V 5 V
JESD-30 code R-PDSO-G20 R-PDSO-G20
length 12.7885 mm 12.7885 mm
Number of functions 1 1
Number of terminals 20 20
Maximum operating temperature 70 °C 70 °C
Maximum output current 0.5 A 0.5 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE
Certification status Not Qualified Not Qualified
Maximum seat height 2.642 mm 2.642 mm
surface mount YES YES
Switch configuration PUSH-PULL PUSH-PULL
Maximum switching frequency 220 kHz 220 kHz
Temperature level COMMERCIAL COMMERCIAL
Terminal form GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm
Terminal location DUAL DUAL
width 7.5 mm 7.5 mm
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