Preliminary
EN5365
ENPIRION
Description
6A Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
Features
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This Enpirion solution is a Power System on Silicon
DC-DC converter. 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 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.
Up to 20W output power
External inductor is NOT required
Total solution footprint less than 135mm
2
Requires only 3 low cost MLCC capacitors
Master/slave configuration for paralleling
5MHz operating frequency for small external
capacitors and excellent transient performance.
High efficiency, greater than 90%
V
OUT
accuracy of 2% over line, load and
temperature
Internal type III compensation with optional
external optimization
Wide input voltage range of 2.375V to 5.5V
3-pin VID output voltage select to chose 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, over-voltage and
under-voltage protection
RoHS compliant, MSL level 3, 260C reflow
Applications
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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
Typical Application Circuit
V
IN
22µF
22µF
POK
SS
PVIN
AVIN
VS0
VS1
VS2
VID Output
Voltage Select
VSENSE
VOUT
V
OUT
47µF
Ordering Information
Part Number
EN5365QC
EN5365QC-T
EN5365QI
EN5365QI-T
EN5365QC-E
Temp Rating (°C)
Package
0 to 70
58-pin QFN
0 to 70
58-pin QFN T&R
-40 to +85
58-pin QFN
-40 to +85
58-pin QFN T&R
QFN Evaluation Board
15nF
AGND
PGND
Figure 1. Simple Layout.
1
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