en5366 Enpirion, en5366 Datasheet

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en5366

Manufacturer Part Number
en5366
Description
6a Voltage Mode Synchronous Buck Pwm Dc-dc Converter With Integrated Inductor External Output Voltage Programming
Manufacturer
Enpirion
Datasheet
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, ASIC, 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
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
integrated
significantly helps in low noise system design
and productivity by offering greatly simplified
board
design,
layout
and
requirements.
All Enpirion products are RoHS compliant and
lead-free manufacturing environment compatible.
Typical Application Circuit
V
PVIN
IN
VOUT
1Ω
47µF
AVIN
ENABLE
XOV
PGND
XFB
SS
15nF
AGND
PGND
Figure 1. Simple Layout.
*Optimized PCB Layout file downloadable from the Enpirion Website to assure first pass design success.
6A Voltage Mode Synchronous Buck PWM
DC-DC Converter with Integrated Inductor
External Output Voltage Programming
Features
• Integrated INDUCTOR, MOSFETS, Controller
• Footprint 1/3
• Low Part Count: only 3 MLCC Capacitors.
• Up to 20W continuous output power.
• Low output impedance optimized for ≤ 90 nm
• Master/slave configuration for paralleling.
• 5MHz operating frequency.
• High efficiency, up to 93%.
• Wide input voltage range of 2.375V to 5.5V.
inductor
• External resistor divider output voltage select.
• Output enable pin and Power OK signal.
• Programmable soft-start time.
• Optimized for low noise/EMI design.
• Thermal shutdown, short circuit, over-voltage
and under-voltage protection.
• RoHS compliant, MSL level 3, 260C reflow.
inductor
solution
Applications
manufacturing
• Point of load regulation for low-power
processors, network processors, DSPs,
FPGAs, and ASICs
• ≤ 90 nm advanced process loads
• Notebook computers, servers, workstations
• Broadband, networking, LAN/WAN, optical
• Low voltage, distributed power architectures
with 2.5V, 3.3V or 5V rails
V
• DSL, STB, DVR, DTV, Industrial PC
OUT
47µF
• Ripple sensitive applications
Ordering Information
Part Number
EN5366QI-T
EN5366QI-E
EN5366QI
RoHS Compliant
Halogen Free
rd
that of competing solutions.
Temp Rating
(°C)
Package
-40 to +85
58-pin QFN
T&R
QFN Evaluation Board

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en5366 Summary of contents

Page 1

... Low voltage, distributed power architectures with 2.5V, 3. rails V • DSL, STB, DVR, DTV, Industrial PC OUT 47µF • Ripple sensitive applications Ordering Information Part Number EN5366QI-T EN5366QI-E EN5366QI RoHS Compliant Halogen Free rd that of competing solutions. Temp Rating (°C) Package -40 to +85 58-pin QFN T&R ...

Page 2

... September 2007 Pin Configuration Below is a top view diagram of the EN5366Q package. NOTE: NC pins are not to be electrically connected to each other or to any external signal, ground, or voltage. However, they must be soldered to the PCB. Failure to follow this guideline may result in part malfunction or damage ...

Page 3

... Optional Error Amplifier output. Allows for customization of the control loop. 51 COMP Optional Error Amplifier Buffer output. Allows for customization of the control loop. Input Enable. Applying a logic high, enables the output and initiates a soft-start. 52 ENABLE Applying a logic low disables the output. ©Enpirion 2007 all rights reserved, E&OE FUNCTION 3 EN5366QI www.enpirion.com ...

Page 4

... E&OE FUNCTION POK power Good Logic Over V Voltage OUT Over Voltage P-Drive (-) N-Drive PWM Comp (+) Compensation Network Sawtooth Generator (-) Error Amp (+) Reference Voltage selector Bandgap Reference EAIN EAOUT 4 EN5366QI PVIN V OUT PGND Voltage XFB Selector COMP www.enpirion.com ...

Page 5

... E&OE SYMBOL MIN V -0.5 IN -0.5 -0.5 -0.5 -0.5 -0 -65 STG SYMBOL MIN V 2.375 IN V 0.75 OUT T - -40 J SYMBOL θ JA θ J-TP 5 EN5366QI MAX UNITS 7 2.5 V 2 150 °C 260 °C 2000 V MAX UNITS 5.5 V 3.3 V +85 °C +125 °C TYP UNITS 20 °C/W 1.5 ° ...

Page 6

... IN OUT OUT 10µF X5R or X7R OUT MLCC V Increasing IN V Decreasing IN (Note 2) ENABLE=0V Max voltage to ensure the converter is disabled 2.375V ≤ V ≤ EN5366QI MIN TYP MAX UNITS 2.375 5.5 0.735 0.750 0.765 0.725 0.750 0.773 3 <20 2.2 2.1 5 MHz 0.8 1.8 50 www ...

Page 7

... MAX 0.8 1 120 90 0.4 V -25 +25 +/-10 requirements. J UVLO V V OUT OUT V V OUT OUT V V OUT OUT V V OUT OUT V V OUT OUT V V =5.0V =5. 1.5 1 2.5 2 3.5 3 4.5 4 5.5 5.5 Load Current (A) Load Current (A) = 5.0V.; Load = 0-6A. IN www.enpirion.com EN5366QI UNITS µ and =3.3V =3.3V =2.5V =2.5V =1.8V =1.8V =1.5V =1.5V =1.2V =1.2V ...

Page 8

... ENABLE POK. OUT ©Enpirion 2007 all rights reserved, E&OE =6A, Ripple Voltage, 3. 5x10uF. OUT , 0-6A, 10A/uS. Transient Response 5.5V C =50uF OUT =15nF, Start up waveforms OUT 8 /1. =6A, IN OUT OUT /3.3V , 0-6A, 10A/uS. IN OUT =5.0V, V =3.3V, C =15nF, IN OUT ENABLE POK. www.enpirion.com EN5366QI ...

Page 9

... V OUT point. Output Voltage Programming The EN5366 output voltage is programmed using a simple resistor divider network. Figure 4 shows the resistor divider configuration. The EN5366 output voltage and over voltage thresholds are determined by the voltages presented at the XFB and XOV pins respectively. ...

Page 10

... Murata GRM32ER71A476KE20L X5R, 1210 Taiyo Yuden Output Capacitor Selection The EN5366QI has been optimized for use with approximately 50µF of output capacitance. Low ESR ceramic capacitors are required with X5R or X7R dielectric formulation. dielectric formulations must not be used as these lose capacitance with frequency, temperature and bias voltage ...

Page 11

... Circuits for hysteresis and input de- glitch are included to ensure high noise immunity and to prevent false tripping. Parallel Device Operation The EN5366QI is capable of paralleling total of four converters to provide up to 24A of continuous current. Please refer to the Parallel Operation Application note, available on the Enpirion website www ...

Page 12

... Figure 5. Layout of power and ground copper. Recommendation 1: Input and output filter capacitors should be placed as close to the EN5366QI package as possible to reduce EMI from input and output loop currents. reduces the physical area of the Input and Output AC current loops. Recommendation 2: Place a slit in the ...

Page 13

... 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 EN5366QI should be clear of any metal except for the large thermal pad. The “grayed-out” area in Figure 7 represents the area that should be clear of any metal (traces, vias, or planes), on the top layer of the PCB ...

Page 14

... September 2007 Figure 8. Recommended footprint for PCB. ©Enpirion 2007 all rights reserved, E&OE 14 EN5366QI www.enpirion.com ...

Page 15

... September 2007 Package Dimensions Figure 9. Package dimensions. ©Enpirion 2007 all rights reserved, E&OE 15 EN5366QI www.enpirion.com ...

Page 16

... DCDC with integrated inductor; 10mm x 7.5mm x 1.85mm QFN package 3-Pin VID V programming OUT 3A DCDC with integrated inductor; 10mm x 7.5mm x 1.85mm QFN package External resistor divider V programming OUT 6A DCDC with integrated inductor; 12mm x 10mm x 1.85mm QFN package 3-Pin VID V programming; Parallel Capable OUT 16 EN5366QI www.enpirion.com ...

Page 17

... Enpirion assumes no responsibility for its use or for infringement of patents or other third party rights, which may result from its use. Enpirion products are not authorized for use in nuclear control systems, as critical components in life support systems or equipment used in hazardous environment without the express written authority from Enpirion. ©Enpirion 2007 all rights reserved, E&OE 17 EN5366QI www.enpirion.com ...

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