IRU3146CFTR datasheet, PDF - EEWORLD Datasheet

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IRU3146CFTR: DescriptionIC REG CTRLR BUCK 28TSSOP; CategoryPower/power management The power supply circuit; File Size541KB，30 Pages; ManufacturerInfineon; Websitehttp://www.infineon.com/

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IRU3146CFTR Overview

IC REG CTRLR BUCK 28TSSOP

IRU3146CFTR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Infineon
package instruction	TSSOP, TSSOP28,.25
Reach Compliance Code	unknown
ECCN code	EAR99
Other features	ALSO OPERATES IN CURRENT MODE
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	16 V
Minimum input voltage	4.5 V
Nominal input voltage	12 V
JESD-30 code	R-PDSO-G28
JESD-609 code	e3
length	9.7 mm
Number of functions	2
Number of terminals	28
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP28,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	1.1 mm
surface mount	YES
Switch configuration	PHASE-SHIFT
Maximum switching frequency	345 kHz
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	4.4 mm

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NOT RECOMMENDED FOR NEW DESIGN

Design Recommendation

Data Sheet No.PD 94702

revA

IR3621

IRU3146

DUAL SYNCHRONOUS PWM CONTROLLER WITH

CURRENT SHARING CIRCUITRY AND AUTO-RESTART

FEATURES

Dual Synchronous Controller with 180 out-of-phase

Configurable to 2-Independent Outputs or 2-Phase

Single Output

Current Sharing Using Inductor's DCR

Current Limit using MOSFET's R

DS(ON)

Hiccup/Latched Current Limit

Latched Over-Voltage Protection

Vcc from 4.5V to 16V Input

Programmable Switching Frequency up to 500KHz

Two Independent Soft-Starts/ Shutdowns

0.8V Precision Reference Voltage Available

Power Good Output

External Frequency Synchronization

DESCRIPTION

The IRU3146 IC combines a Dual synchronous Buck

controller, providing a cost-effective, high performance

and flexible solution. The IRU3146 can configured as 2-

independent or as 2-phase controller. The 2-phase con-

figuration is ideal for high current applications. The

IRU3146 features 180 out of phase operation which re-

duces the required input/output capacitance and results

to few number of capacitor quantity. Other key features

offered by this device include two independent program-

mable soft starts, programmable switching frequency up

to 500KHz per phase, under voltage lockout function.

The current limit is provided by sensing the lower

MOSFET's on-resistance for optimum cost and perfor-

mance.

2-Phase Power Suppl

Graphic Card

DDR Memory Applications

C12

APPLICATIONS

Embedded Computer Systems

Telecom Systems

Point of Load Power Architectures

12V

C11

VcH1 V

OUT3

VcH2

Vcc

HDrv1

OCSet1

C13

C14

Hiccup

LDrv1

PGnd1

C15

R10

Sync

1.8V @ 30A

C16

REF

IRU3146

BAT54A

SEN1

SEN2

Fb1

Fb2

R11

Comp1

C17

Comp2

HDrv2

OCSet2

C18

PGood

C10

PGood

SS1 / SD

SS2 / SD

LDrv2

PGnd2

Gnd

Figure 1 - Typical application of IRU3146 in 2-phase configuration with inductor current sensing

PACKAGE ORDER INFORMATION

DEVICE

IRU3146CF

Rev. 1.1

6/25/04

PACKAGE

28-Pin TSSOP (F)

www.irf.com

IRU3146CFTR Related Products

	IRU3146CFTR
Description	IC REG CTRLR BUCK 28TSSOP
Is it Rohs certified?	incompatible
Maker	Infineon
package instruction	TSSOP, TSSOP28,.25
Reach Compliance Code	unknown
ECCN code	EAR99
Other features	ALSO OPERATES IN CURRENT MODE
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	16 V
Minimum input voltage	4.5 V
Nominal input voltage	12 V
JESD-30 code	R-PDSO-G28
JESD-609 code	e3
length	9.7 mm
Number of functions	2
Number of terminals	28
Maximum operating temperature	70 °C
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP28,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	1.1 mm
surface mount	YES
Switch configuration	PHASE-SHIFT
Maximum switching frequency	345 kHz
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	4.4 mm

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