EN6347QI Datasheet, PDF (1/24 Pages) Enpirion, Inc. – 4A Voltage Mode Synchronous Buck PWM DC-DC Converter with Integrated Inductor

Enpirion^® Power Datasheet
EN6347QI 4A PowerSoC
Voltage Mode Synchronous
PWM Buck with Integrated Inductor
Description
The EN6347QI 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 QFN
package.
The EN6347QI 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
 1.5% V_OUT Accuracy (Over Load and Temperature)
 Up to 4A Continuous Operating Current
 3 MHz Operating Frequency with Ext Clock Sync
 High Efficiency (Up to 95%)
 Frequency Synchronization to External Clock
 Input Voltage Range (2.5V to 6.6V)
 Programmable Light Load Mode
 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
 Point of Load Regulation for Low-Power, ASICs
Multi-Core and Communication Processors, DSPs,
FPGAs and Distributed Power Architectures
 Low Voltage, Distributed Power Architectures
 High Efficiency 12V Intermediate Bus Architectures
 Blade Servers, RAID Storage, Industrial
Automation, Embedded Computing, Wireless
Communications
 Beat Frequency/Noise Sensitive Applications
V_IN
22F
1206
C_SS
EN6347QI
PVIN
ENABLE
AVIN
VOUT
VFB
PGND PGND
SS
LLM/
AGND SYNC
V_OUT
R_A
C_A
47F
1206
R_B
Figure 1. Simplified Applications Circuit
Efficiency vs. Output Current
100
90
80
70
60
50
40
CONDITIONS
75mm²
30
V_IN = 5V
20
VOUT = 3.3V LLM
10
VOUT = 3.3V PWM
0
0.01
0.1
1
10
OUTPUT CURRENT (A)
Figure 2. Highest Efficiency in Smallest Solution Size
05991
February 12, 2016
www.altera.com/enpirion
Rev I