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PDF IR3553 Data sheet ( Hoja de datos )
| Número de pieza | IR3553 | |
| Descripción | 40A Integrated PowIRstage | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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40A Integrated PowIRstageTM IR3553
FEATURES
Peak efficiency up to 93.8% at 1.2V
Integrated driver, control MOSFET, synchronous
MOSFET and Schottky diode
Input voltage (VIN) operating range up to 15V
Output voltage range from 0.25V up to 3.3V
Output current capability of 40A
Operation up to 1.0MHz
Integrated current sense amplifier
VCC under voltage lockout
Thermal flag
Body‐Braking™ load transient support
Diode‐emulation high efficiency mode
Compatible with 3.3V PWM logic and VCC tolerant
Compliant with Intel DrMOS V4.0
PCB footprint compatible with IR3550 – IR3551
Efficient dual sided cooling
Small 4mm x 6 mm x 0.9mm PQFN package
Lead‐free RoHS compliant package
APPLICATIONS
High frequency, low profile DC‐DC converters
Voltage Regulators for CPUs, GPUs, and DDR
memory arrays
BASIC APPLICATION
DESCRIPTION
The IR3553 integrated PowIRstage™ is a synchronous buck
gate driver IC with co‐packed control and synchronous
MOSFETs and Schottky diode. It is optimized internally for
PCB layout, heat transfer and driver/MOSFET timing.
Custom designed gate driver and MOSFET combination
enables higher efficiency at lower output voltages required
by cutting edge CPU, GPU and DDR memory designs.
Up to 1.0MHz 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 IR3553’s
superior efficiency enables smallest size and lower solution
cost. The IR3553 PCB footprint is compatible with IR3550
(60A), and the IR3551 (50A).
Integrated current sense amplifier achieves superior
current sense accuracy vs. best‐in‐class controller based
Inductor DCR sense methods.
The IR3553 incorporates the Body‐Braking™ feature which
enables reduction of output capacitors and is activated
quickly. Synchronous diode‐emulation mode in the IR3553
removes the zero‐current detection and control burden
from the PWM controller and increases system efficiency.
The IR3553 is optimized specifically for CPU core power
delivery in server applications. The ability to meet the
stringent requirements of the server market also makes
the IR3553 ideally suited to powering GPU and DDR
memory designs.
100 20
90 16
80 12
70 8
60 4
Figure 1: IR3553 Basic Application Circuit
50 0
0 5 10 15 20 25 30 35 40
Output Current (A)
Figure 2: IR3553 Efficiency and Power Loss
1 June 30th, 2011 | PRELIMINARY DATASHEET | V2.12
Datasheet pdf - http://www.DataSheet4U.net/
1 page | ||
| Páginas | Total 1 Páginas | |
| PDF Descargar | [ Datasheet IR3553.PDF ] | |
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