en5336 Enpirion, en5336 Datasheet

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en5336

Manufacturer Part Number
en5336
Description
3a Voltage Mode Synchronous Buck Pwm Dc-dc Converter With Integrated Inductor External Output Voltage Programming
Manufacturer
Enpirion
Datasheet

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Description
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,
applications in a distributed power architecture.
Advanced circuit techniques, ultra high switching
frequency, and very advanced, high-density,
integrated
technology deliver high-quality, ultra compact,
non-isolated DC-DC conversion. This device
requires only an input, output, and small soft-
start programming capacitor and a resistor
divider.
The Enpirion solution significantly helps in
system design and productivity by offering greatly
simplified
manufacturing
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.
Typical Application Circuit
Figure 1. Simple Layout.
V
22µF
IN
ENPIRION
memory
15 nF
circuit
board
requirements.
PVIN
AVIN
SS
boards
and
AGND
POK
design,
PGND
proprietary
VOUT
XOV
XFB
and
In
system
layout
addition,
inductor
47µF
3A Voltage Mode Synchronous Buck PWM
V
DC-DC Converter with Integrated Inductor
level
OUT
and
a
External Output Voltage Programming
1
Features
• Integrated INDUCTOR, MOSFETS, Controller
• Footprint 1/3
• Minimal external components.
• Up to 10W continuous output power.
• 5MHz operating frequency.
• High efficiency, up to 93%.
• V
• Wide input voltage range of 2.375V to 5.5V.
• External resistor divider output voltage select.
• Output enable pin and Power OK signal.
• Programmable soft-start time.
• Programmable over-current protection.
• Programmable over-voltage protection.
• Thermal shutdown, short circuit, and UVLO.
Applications
• Point of load regulation for low-power
• Notebook computers, servers, workstations
• Broadband, networking, LAN/WAN, optical
• Low voltage, distributed power architectures
• DSL, STB, DVR, DTV, iPC
• Ripple sensitive applications
Ordering Information
EN5336QI-T
EN5336QI-E
Part Number
RoHS compliant, MSL level 3, 260C reflow.
processors, network processors, DSPs,
FPGAs, and ASICs
with 2.5V, 3.3V or 5V rails
OUT
accuracy 2% over line, load and temp.
rd
that of competing solutions.
Temp Rating
-40 to +85
(°C)
QFN Evaluation Board
EN5336QI
www.enpirion.com
44-pin QFN T&R
Package

Related parts for en5336

en5336 Summary of contents

Page 1

... Low voltage, distributed power architectures with 2.5V, 3. rails • DSL, STB, DVR, DTV, iPC • Ripple sensitive applications V OUT Ordering Information 47µF Part Number EN5336QI-T EN5336QI-E 1 EN5336QI rd that of competing solutions. Temp Rating (°C) Package -40 to +85 44-pin QFN T&R QFN Evaluation Board www.enpirion.com ...

Page 2

... Rev 1.0 November 2006 Pin Configuration Below is a top view diagram of the EN5336QI package. Figure 2. Pin-out diagram, top view. NOTE: NC pins are not to be electrically connected to each other or to any external signal, ground, or voltage. Failure to follow this guideline may result in part malfunction or damage. ...

Page 3

... Input Enable. Applying a logic high, enables the output and initiates a soft-start. Applying a 41 ENABLE logic low disables the output. NO CONNECT – Do not electrically connect these pins to each other or to any other electrical 42-44 NC signal. CAUTION!: May be internally connected. ©Enpirion 2006 all rights reserved, E&OE FUNCTION 3 www.enpirion.com EN5336QI ...

Page 4

... Network Sawtooth Generator (-) Error Amp (+) Reference Voltage selector Bandgap Reference EAOUT EAIN SYMBOL 4 PVIN V OUT PGND Voltage XFB Selector COMP MIN MAX UNITS V -0.5 7 -0.5 2.5 T -65 150 STG T 150 J-ABS Max 260 2000 www.enpirion.com EN5336QI °C °C °C V ...

Page 5

... SDH θ JC θ JA TEST CONDITIONS ENABLE=0V Over line, load and temperature Max voltage to ensure the converter is disabled 2.375V ≤ V ≤ 5.5V IN 5.5V < EN5336QI TYP MAX UNITS +125 °C 150 °C 25 °C 3 °C/W 25 °C/W MIN TYP MAX UNITS 2.375 5 ...

Page 6

... V = 1.5V = 1.5V OUT OUT 1. OUT OUT 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 2.7 2.7 2.9 2.9 Efficiency versus Load 5.5V/1.2V Load transient, 0 – 3A, V Shut-down waveform EN5336QI 2.5V = 2.5V OUT OUT 1.8V = 1.8V OUT OUT 1.5V = 1.5V OUT OUT 1.2V = 1.2V OUT OUT 0.8V = 0.8V OUT OUT urre urre ...

Page 7

... POK will remain “high” as long as V 90% of the nominal V Input Capacitor Selection The EN5336QI requires between 10uF and 20uF of input capacitance. Low-cost, low-ESR ceramic capacitors should be used as input capacitors for this converter. The dielectric must be X5R or X7R rated ...

Page 8

... Murata GRM32ER71A476KE20L X5R, 1210 Taiyo Yuden Output Capacitor Selection The EN5336QI has been optimized for use with approximately 47µF of output capacitance. Low ESR ceramic capacitors are required with X5R or X7R rated dielectric formulation. equivalent dielectric formulations must not be used as these loose capacitance with frequency, temperature and bias voltage ...

Page 9

... Capacitor Selection for details on recommended capacitor types.) Voltage mode operation provides high noise immunity at light load. In some cases modifications to the compensation may be required. For more information, contact Enpirion Applications Engineering support. 9 www.enpirion.com EN5336QI compensated ...

Page 10

... Only the large thermal pad and the perimeter pads are to be mechanically or electrically connected to the PC board. The PCB top layer under the EN5336QI should be clear of any metal except for the large thermal pad. The “grayed-out” area in Figure 4 represents the area that should be clear of any metal (traces, vias, or planes), on the top layer of the PCB ...

Page 11

... Rev 1.0 November 2006 Figure 5. Recommended solder mask opening for PWB. ©Enpirion 2006 all rights reserved, E&OE 11 www.enpirion.com EN5336QI ...

Page 12

... Rev 1.0 November 2006 Package Dimensions Figure 6. EN5336QI Package dimensions. Contact Information Enpirion, Inc. 685 Route 202/206 Suite 305 Bridgewater, NJ 08807 Phone: 908-575-7550 Fax: 908-575-0775 Enpirion reserves the right to make changes in circuit design and/or specifications at any time without notice. Information furnished by Enpirion is believed to be accurate and reliable ...

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