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IR3552_15

Description
40A Integrated PowIRstage
File Size1MB,23 Pages
ManufacturerInternational Rectifier ( Infineon )
Websitehttp://www.irf.com/
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IR3552_15 Overview

40A Integrated PowIRstage

40A Integrated PowIRstage
®
IR3552
FEATURES
Peak efficiency up to 94.5% at 12VIN to
1.8VOUT, 93.3% at 1.2VOUT
40A PowIRstage includes: Integrated Driver,
Control MOSFET, Synchronous MOSFET and
Schottky Diode
<1uA Disabled ICC Bias Current
<500uA Enabled ICC Bias Current
Input voltage (VIN) range of 4.5V to 17V with
available 14:1 VIN_DIV monitor pin
Flexible Drive Voltage (VDRV) from 4.5V to
13.2V to optimize converter efficiency
Integrated bootstrap PFET for improved high
side MOSFET enhancement
VDRV under voltage lockout protection
5V VCC with under voltage lockout protection
Switching frequency up to 1.5MHz
Over-temperature TFAULT alert flag with
internal temperature exceeds 150°C
MODE pin selectable 3.3V tri-state PWM logic
or IR Active Tri-Level (ATL) PWM logic
Efficient dual sided cooling
Small 4mm x 6 mm x 0.9mm PQFN package
Lead-free RoHS compliant package
®
DESCRIPTION
The IR3552 integrated PowIRstage™ contains a low
quiescent current synchronous buck gate driver IC
which is co-packed with control and synchronous
MOSFETs and low side Schottky diode to further
improve efficiency. The package is optimized for PCB
layout, heat transfer, driver/MOSFET control timing,
and minimal switch node ringing when layout
guidelines are followed. The paired gate driver and
MOSFET combination enables higher efficiency at
lower output voltages required by cutting edge CPU,
GPU and DDR memory designs.
The IR3552 also supports <1uA disabled ICC bias
current when the ENABLE pin is pulled low. This
feature supports ultra-low or “near-off” power
shutdown requirements of battery powered devices.
1.5MHz
switching
frequency
enables
high
performance
transient
response,
allowing
miniaturization of output inductors, as well as input
and output capacitors while maintaining industry
leading efficiency. The IR3552’s superior efficiency
enables smallest size and lower solution cost.
The IR3552 provides two selectable PWM logic
modes, the regular 3.3V tri-state PWM logic or
International Rectifier’s Active Tri-Level (ATL) PWM
logic. The ATL PWM logic eliminates a dedicated
TM
pin and improves the transient
Body-braking
response of the converter during load release.
The IR3552 provides a thermal warning output set to
150°C, which makes it possible to protect critical
circuits on the PCB.
APPLICATIONS
High current
requirements
solutions
with
true
sleep
High frequency, low profile DC-DC converters
Voltage Regulators for CPUs, GPUs, and DDR
memory arrays
ORDERING INFORMATION
Base Part Number
IR3552MTRPBF
Package Type
PQFN 4 mm x 6 mm
Standard Pack
Form
Tape and Reel
Quantity
3000
Orderable Part Number
IR3552MTRPBF
1
www.irf.com
| © 2014 International Rectifier
February 19, 2014 | FINAL

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