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EN6347QA fiches techniques PDF

Altera - 4A PowerSoC Voltage Mode Synchronous PWM Buck

Numéro de référence EN6347QA
Description 4A PowerSoC Voltage Mode Synchronous PWM Buck
Fabricant Altera 
Logo Altera 





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EN6347QA fiche technique
Enpirion® Power Datasheet
EN6347QA 4A PowerSoC
Voltage Mode Synchronous
PWM Buck with Integrated Inductor
Description
The EN6347QA is a Power System on a Chip
(PowerSoC) DC-DC converter. It integrates MOSFET
switches, small-signal circuits, compensation, and the
inductor in an advanced 4mm x 7mm x 1.85mm 38-
pin QFN package.
The EN6347QA is specifically designed to meet the
precise voltage and fast transient requirements of
present and future high-performance, low-power
processor, DSP, FPGA, memory boards and system
level applications in distributed power architecture.
The device’s advanced circuit techniques, ultra high
switching frequency, and proprietary integrated
inductor technology deliver high-quality, ultra
compact, non-isolated DC-DC conversion.
The Altera Enpirion power solution significantly helps
in system design and productivity by offering greatly
simplified board design, layout and manufacturing
requirements. In addition, a reduction in the number
of vendors required for the complete power solution
helps to enable an overall system cost savings.
All Enpirion products are RoHS compliant and lead-
free manufacturing environment compatible.
Features
Integrated Inductor, MOSFETs, Controller
Up to 4A Continuous Operating Current
High Efficiency (Up to 95%)
Frequency Synchronization to External Clock
Input Voltage Range (2.5V to 6.6V)
Programmable Light Load Mode
Optimized Total Solution Size (90mm2)
Output Enable Pin and Power OK
Programmable Soft-Start
Thermal Shutdown, Over-Current, Short Circuit,
and Under-Voltage Protection
RoHS Compliant, MSL Level 3, 260°C Reflow
Applications
Automotive Applications
Point of Load Regulation for Low-Power, ASICs
Multi-Core and Communication Processors, DSPs,
FPGAs and Distributed Power Architectures
Blade Servers, RAID Storage and LAN/SAN
Adapter Cards, Wireless Base Stations, Industrial
Automation, Test and Measurement, Embedded
Computing, and Printers
High Efficiency 12V Intermediate Bus Architectures
Beat Frequency/Noise Sensitive Applications
VIN
560
22µF
1206
X7R
CSS
EN6347QA
PVIN
AVIN
PG
VOUT
VFB
PGND PGND
SS LLM/
AGND SYNC
RA
CA
RB
Figure 1. Simplified Applications Circuit
VOUT
47µF
1210
X7R
Efficiency vs. Output Current
100
90
80
70
60
50
40
CONDITIONS
90mm2
30 VIN = 5V
20
VOUT = 3.3V LLM
EN6347QA
4 mm x 7 mm
10
0
0.01
VOUT = 3.3V PWM
0.1 1
OUTPUT CURRENT (A)
10
Figure 2. Highest Efficiency in Smallest Solution Size
10318
October 1, 2014
www.altera.com/enpirion
Rev A

PagesPages 24
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