EN5335QI Datasheet, PDF (1/15 Pages) Enpirion, Inc. – 3A Voltage Mode Synchronous Buck PWM DC-DC Converter with Integrated Inductor 3-Pin Programmable Output

Enpirion^® Power Datasheet
EN5335QI 3A PowerSoC
Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
3-Pin Programmable Output
Description
The EN5335QI is a Power System on a Chip
(PowerSoC). It 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
a distributed power architecture. Advanced circuit
techniques, ultra high switching frequency, and
very advanced, high-density, integrated circuit
and proprietary inductor technology deliver high-
quality, ultra compact, non-isolated DC-DC
conversion. Operating this converter requires as
few as three external components that include
small value input and output ceramic capacitors
and a soft-start capacitor.
The Altera Enpirion 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 Altera Enpirion products are RoHS compliant
and lead-free manufacturing environment
compatible.
Typical Application Circuit
V_IN
22F
PVIN
VS0
AVIN
VS1
VS2
VID Output
Voltage Select
Features
 Integrated INDUCTOR, MOSFETS, Controller
 Footprint 1/3^rd that of competing solutions
 Low Part Count: only 3 MLC Capacitors
 Up to 10W continuous output power
 5MHz operating frequency
 High efficiency, up to 93%
 V_OUT accuracy 3% over line, load and temp
 Wide input voltage range of 2.375V to 6.6V
 3-pin VID output voltage select to choose one
of 7 pre-programmed voltage levels
 Output enable pin and Power OK signal
 Programmable soft-start time
 Programmable over-current protection
 Thermal shutdown, short circuit, and UVLO
 Output over-voltage protection
 RoHS compliant, MSL level 3, 260C reflow
Applications
 Point of load regulation for low-power
processors, network processors, DSPs,
FPGAs, and ASICs
 Notebook computers, servers, workstations
 Broadband, networking, LAN/WAN, optical
 Low voltage, distributed power architectures
with 2.5V, 3.3V or 5V rails
 DSL, STB, DVR, DTV, iPC
 Ripple sensitive applications
POK
VSENSE
SS
VOUT
V_{OUT Ordering Information}
15nF
AGND PGND
47F
Part Number
EN5335QI
EVB-EN5335QI
Temp Rating
(°C)
Package
-40 to +85
44-pin QFN T&R
QFN Evaluation Board
Figure 1. Simple Layout.
00846
October 11, 2013
www.altera.com/enpirion
Rev J