Enpirion® Power Evaluation Board EN6382 PowerSoC

Evaluation Board User Guide

www.altera.com/enpirion

Table of Contents

Table of Contents .................................................................................................................................. 1 Description ............................................................................................................................................ 2 Features ................................................................................................................................................ 2 Applications ........................................................................................................................................... 2

Required Equipment ............................................................................................................................. 3 Evaluation Board Overview ................................................................................................................... 3 Instructions ............................................................................................................................................ 4

Evaluation Board Schematic ................................................................................................................. 5 Bill of Materials ...................................................................................................................................... 6 Typical Performance ............................................................................................................................. 7

EN6382 Evaluation Board User Guide

www.altera.com/enpirion, Page 2

Description

The EN6382QI is a Power System on a Chip (PowerSoC) DC to DC converter with an integrated inductor, PWM controller, MOSFETs and compensation to provide the smallest solution size in an 8x8x3mm 56 pin QFN module. It offers very high efficiency and is able to provide 8A continuous output current with no de-rating. The EN6382QI also provides excellent line and load regulation over temperature. The EN6382QI is specifically designed to meet the precise voltage and fast transient requirements of high-performance, low-power processor, DSP, FPGA, memory boards and system level applications in distributed power architecture.

Other features include precision enable threshold, pre-bias monotonic start-up, and programmable soft-start. The device’s advanced circuit techniques, ultra-high switching frequency, and proprietary integrated inductor technology deliver high-quality, ultra-compact DC-DC conversion.

The Altera Enpirion integrated inductor solution significantly helps to reduce noise. The complete power converter solution enhances productivity by offering greatly simplified board design, layout and manufacturing requirements. All Altera Enpirion products are RoHS compliant and lead-free manufacturing environment compatible.

Features

High Efficiency (Up to 96%)

Excellent Ripple and EMI Performance

Up to 8A Continuous Operating Current

Input Voltage Range (3.0V to 6.5V)

1.5% VFB Accuracy

Optimized Total Solution Size (170 mm2)

Precision Enable Threshold for Sequencing

Programmable Soft-Start

Thermal, Over-Current, Short Circuit, Reverse Current Limit and Under-Voltage Protections

RoHS Compliant, MSL Level 3, 260°C Reflow

Applications

Point of load regulation for FPGAs, ASICs,

processors, DSPs, and distributed power

architectures.

Industrial automation, servers, storage, adapter

cards, wireless base stations, test and

measurement, and embedded computing.

Space constrained applications that require the

highest power density.

Noise sensitive applications.

VOUTVIN

2x22µF1206

VOUT

ENABLE

AGNDSS

PVIN

AVIN

PGND PGND

EN6382QI

15nF

VFB

RA

RB

R1

CA

FQADJ

2x47µF1206

RFQADJ

EN

10Ω

Figure 1: Simplified Applications Circuit

Figure 2: Efficiency at VIN = 5V, VOUT = 3.3V

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0 2 4 6 8

Eff

icie

nc

y [

-]

Output Current [A]

EN6382QI

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Required Equipment

No.# Equipment Minimum Spec

1 DC power supply 10V/10A, adjustable

2 Electronic Load 10V/20A with dynamic load capabilities

3 DMM -

4 Oscilloscope -

5 Cables >10A capability, banana terminal

Evaluation Board Overview

Figure 3: EN6382 Evaluation Board Illustration (Top Layer)

INPUT VOLTAGE

VOLTAGE SELECTOR

INPUT FILTER

OUTPUT FILTER

DISABLE

OUTPUT VOLTAGE

POWER GOOD

EN6382QI

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Instructions

1) Connecting the power supply

Set the Power Supply to 5V/10A

Connect the power supply to the board (make sure that the power supply is OFF) with two patch cables, not longer than 12 inch (30cm). Using longer wires is possible, provided that additional bulk is added to the board and the input voltage is monitored at the board level. Please use INPUT GROUND and INPUT VOLTAGE jacks to connect the power.

Please observe the correct polarity.

2) Connecting the load

Connect the load to the OUTPUT GROUND and OUTPUT voltage with patch cables, no longer than 12 inches (30cm).

Please observe the correct polarity. 3) Jumper Setting

The board will arrive with NO jumper on the J2 and one jumper on J1, in the 1V0 position. Connecting more than one jumper on J1 will not damage the board – just drive the output voltage higher.

4) Power-up the board

After all preparations above, the board should be ready to perform.

Note: To measure the Bode Plot of the DC-DC converter, R9 must be replaced with 50Ω, while TP1, 2

and 3 should be used to connect the probes of the phase analyzer.

Warning: Incorrect polarity of the power supply may cause permanent damage!

Warning: Power supply voltage above 7V may cause permanent damage!

EN6382QI

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Evaluation Board Schematic

U1

EN6382

NC 1NC 2NC 3NC 4NC 5NC 6NC 7NC 8NC 9NC 10NC 11NC 12NC 13NC 14

VO

UT

15

VO

UT

16

VO

UT

17

VO

UT

18

NC

19

NC

20

NC

21

NC

22

SW

23

PG

ND

24

PG

ND

25

PG

ND

26

PG

ND

27

PG

ND

28

VFB42ENABLE41BGND40VDDB39NC38NC37PVIN36PVIN35PVIN34PVIN33PVIN32PVIN31PVIN30PVIN

29

PG

OO

D4

8V

SE

NS

E4

7S

S4

6F

RQ

45

AG

ND

44

AV

IN4

3

PG

ND

57

VO

UT

60

PVIN

58

SW

49

SW

50

SW

51

SW

52

NC

53

NC

54

NC

55

NC

56

NC

59R13

DNI

C1

22uF/

10V

TP22

R8

442

k

J6

C12

150u

+C13

DNI

C15

DNI

R10

0

C2

22uF/

10V

TP12

R3

294k

C5

47uF/

10V

C14

DNI

TP15

TP7

J2

TP20

R1

15k

TP28

J4

R9 0

C3

DNI

TP14

TP6C6

DNI

TP9

R4

10k

CHF2

DNI

CH

F1

DN

I

J5

TP11

R5

64.9

k

TP13

TP19

J3

TP10

R210

TP16

R6

147

k

TP25

C10

15pF

R11

DNI

C4

47uF/

10V

TP8

R12

DNI

J1

1 3 5

2 4 6 87

TP21

R7

294

k

AGND

VOUTVOUT

GND

VOUT

GND

VOUT

3V

3

1V

8

1V

2

1V

0

VIN

VIN

GND

SW

DIS

PVIN

GND

VIN

PGOOD SS

DIS

0V

6

GND

Figure 4: Evaluation Board Schematic

EN6382QI

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Bill of Materials

Designator Qty Description C1,C2 2 22µF/10V

C9 1 4.7nF

C10 1 15pF

C4, C5 1 47µF/10V

C12 1 150µF

R1 1 15kΩ

R2 1 10Ω

R3,R7 2 294kΩ

R4 1 10kΩ

R5 1 64.9kΩ

R6 1 147kΩ

R8 1 442kΩ

R9, R10 2 0Ω

U1 1 EN6382QI

EN6382QI

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Typical Performance

Figure 5: Efficiency – VOUT = 1V, various VIN,

f =1.5MHz

Figure 6: Efficiency – VOUT = 1.8V, various VIN,

f = 1.5MHz

Figure 7: Efficiency – VOUT = 3.3V, various VOUT,

f = 1.5MHz

Figure 8: Efficiency – VOUT = 1.8V, various VOUT,

T = -40ºC

0

0.5

1

1.5

2

2.5

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0 2 4 6 8

Po

wer

Lo

ss [

W]

Eff

icie

nc

y [

%]

Load [A]EFF - 3V EFF - 4V EFF - 5V EFF - 6V

EFF - 6.5V LOSS - 3V LOSS - 4V LOSS - 5V

LOSS - 6V LOSS - 6.5V

0

0.5

1

1.5

2

2.5

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0 2 4 6 8

Po

wer

Lo

ss [

W]

Eff

icie

nc

y [

%]

Load [A]

EFF - 3V EFF - 4V EFF - 5V EFF - 6V

EFF - 6.5V LOSS - 3V LOSS - 4V LOSS - 5V

LOSS - 6V LOSS - 6.5V

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0.5

1

1.5

2

2.5

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Po

wer

Lo

ss [

W]

Eff

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nc

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%]

Load [A]

EFF 4.5V EFF - 5V EFF - 6V EFF - 6.5V

LOSS - 4.5V LOSS - 5V LOSS - 6V LOSS - 6.5V

0

0.5

1

1.5

2

2.5

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0 2 4 6 8

Po

wer

Lo

ss [

W]

Eff

icie

nc

y [

%]

Load [A]EFF 4V EFF - 5V EFF - 6V EFF - 6.5V

LOSS 4V LOSS - 4.5V LOSS - 5V LOSS - 5.5V

LOSS - 6V LOSS - 6.5V

EN6382QI

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Typical Performance Curves (Continued)

Figure 9: Efficiency – VOUT = 1.8V, various VOUT,

T = +25ºC

Figure 10: Efficiency – VOUT = 1.8V, various VOUT,

T = +85ºC

Figure 11: Load and Line regulation, T = -40ºC

Figure 12: Load and Line regulation, T = +25ºC

0

0.5

1

1.5

2

2.5

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0 2 4 6 8P

ow

er

Lo

ss [

W]

Eff

icie

nc

y [

%]

Load [A]

EFF - 4V EFF - 5V EFF - 6V EFF - 6.5V

LOSS - 4V LOSS - 5V LOSS - 6V LOSS - 6.5V

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0.5

1

1.5

2

2.5

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0 2 4 6 8

Po

wer

Lo

ss [

W]

Eff

icie

nc

y [

%]

Load [A]

EFF - 4V EFF - 5V EFF - 6V EFF - 6.5V

LOSS - 4V LOSS - 5V LOSS - 6V LOSS - 6.5V

0.985

0.99

0.995

1

1.005

1.01

1.015

0 2 4 6 8

V_O

UT

[V

]

Load [A]3 3.5 4 4.5 5

5.5 6 6.5 -1% +1%

0.985

0.99

0.995

1

1.005

1.01

1.015

0 2 4 6 8

V_O

UT

[V

]

Load [A]

3 3.5 4 4.5 5

5.5 6 6.5 -1% +1%

EN6382QI

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Typical Performance Curves (Continued)

Figure 13: Load and Line regulation, T = +85ºC

Figure 14: Line regulation over Temperature

Typical Performance Characteristics

Figure 15: Output ripple VIN = 5V, VOUT = 1V

Figure 16: Output ripple VIN = 5V, VOUT = 1.8V

0.985

0.99

0.995

1

1.005

1.01

1.015

0 2 4 6 8 10 12

V_O

UT

[V

]

Load [A]3 3.5 4 4.5 5

5.5 6 6.5 -1% +1%

0.592

0.594

0.596

0.598

0.6

0.602

0.604

0.606

0.608

-40 -20 0 20 40 60 80

VO

UT

[V

]

Temperature [C]2.5 3 3.5 44.5 5 5.5 66.5 -1% -0.50% 0.50%1%

EN6382QI

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Figure 17: Output ripple VIN = 5V, VOUT = 3.3V

Figure 18: Startup VIN = 5V, VOUT = 1V, IL = 8A

Figure 19: Startup VIN = 5V, VOUT = 1.8V, ILOAD = 8A

Figure 20: 0/8A load transient

Figure 21: RCL protection activated by forcing the SS pin

Figure 22: Hiccup mode during short-circuit protection

EN6382QI

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Test Recommendations In order to get accurate measurements for sensitive nodes, small loop area (small antennae) are recommended. Besides the built-in low inductance of the ground, the small loop area will collect less EMI than the standard oscilloscope ground cables.

The EVAL board provides 3 test-points suitable for connecting the oscilloscope probe as described above; these are:

TP28 – for the Switch Node (SW)

TP21 – for the Output Voltage (VOUT)

TP22 – for the Input Voltage (VIN).

Contact Information

Altera Corporation 101 Innovation Drive San Jose, CA 95134 Phone: 408-544-7000 www.altera.com © 2015 Altera Corporation—Confidential. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, HARDCOPY, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html. Altera warrants performance of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device specifications before relying on any published information and before placing orders for products or services.