EN5337QI Datasheet, PDF (1/12 Pages) Altera Corporation – 3A PowerSoC Voltage Mode Synchronous Buck PWM DC-DC Converter with Integrated Inductor

EN5337QI
3A Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
Description
The EN5337QI is a Power Supply on a Chip
(PwrSoC) DC-DC converter. It integrates
MOSFET switches, all small-signal circuits,
compensation, and the inductor in an advanced
4mm x 7mm QFN package.
The EN5337QI 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 architectures. 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.
The 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 Enpirion products are RoHS compliant and
lead-free manufacturing environment compatible.
RA 0402
CA 0402
RB 0402
0402
Soft Start Cap
Features
• Integrated Inductor, MOSFETS, Controller
• Total Power Solution ≈ 75mm²
• Minimal external components.
• 3A Continuous Output Current Capability
• 5MHz operating frequency. Switching
frequency can be phase locked to an external
clock.
• High efficiency, up to 92%.
• Wide input voltage range of 2.375V to 5.5V.
• Output Enable pin and Power OK signal.
• Programmable soft-start time.
• Under Voltage Lockout, Over Current, Short
Circuit and Thermal Protection.
• RoHS compliant, MSL level 3, 260C reflow.
Applications
• Point of load regulation for low-power
processors, network processors, DSPs,
FPGAs, and ASICs
• Noise sensitive applications such as A/V, RF
and Gbit I/O
• Low voltage, distributed power architectures
with 2.5V, 3.3V or 5V rails
• Computing, Networking, DSL, STB, DVR,
DTV, iPC
• Ripple sensitive applications
• Beat frequency sensitive applications
EN5337QI
Output Cap Input Cap
47uF/1206 22uF/1206
V_IN
22μF
1206
PVIN
ENA
AVIN
VOUT
XFB
PGND
SS
AGND
PGND
RA
CA
RB
V_OUT
47μF
1206
Figure 1: Total Solution Footprint (Not to scale)
Total Area ≈ 75 mm²
Figure 2: Typical Application Schematic
02638
6/18/2009
www.enpirion.com
Rev:D