i3A Evaluation Board Manual - us.tdk-lambda.com · i3A Evaluation Board Manual TDK Lambda...

TDK-Lambda Corporation

i3A Evaluation Board Manual

TDK Lambda Evaluation Board P/N

i3A5A8A-001-EVK-D2PP


Table of Contents

- 2 -

Getting Started with the i3A

Before Using the Eval Board……………………………………………………...3

Device Introduction…….…………………………………………….……….……4

Evaluation Board Introduction ……………………………………………………5

Converter #1 Test Points and Controls ………………………………………….6

Converter #2 Test Points and Controls…………………………………………..7

Input Section test Points…………………………………………………………..8

Input/Output Electrical Connections & Vo Adjust ………………………………9

Operation ……………………………………………………………………..…...10

Setup Example ………………………………………………………………..….11

Setup Example Using Scope ………………………….....………………….…..12

Appendices

Scope Measurement Technique...………………………………………………13

Simplified Evaluation Board Schematic………..………………………….…...15

Evaluation Board Silkscreen…………………...……………………………….16

Evaluation Board Bill of Materials…………......………………………………..17


Before Using the Eval Board

• Follow the electrical connection instructions for the

evaluation board carefully. Reverse Connections on the

input or the output can cause permanent damage.

• Do not operate the input voltage higher than the specified

values. Overvoltage on the input to the device will cause

permanent damage.

• This product contains a printed circuit board utilizing surface

mounted devices. PCB stresses such as bending, twisting

etc. can cause damage. Please handle with care.

- 3 -

Caution


Getting Started with the i3A

I3A Series DC/DC Power Modules

9-53V Input, 4.5 & 8A Output

100W 1/32nd Brick Power Module

I3A power modules perform local voltage conversion

from a 12V, 24V, or well regulated 48V bus. The i3A

series utilizes a low component count that results in

both a low cost structure and a high level of

performance. The open-frame, compact, design

features a low profile and weight that allow for extremely

flexible and robust manufacturing processes. The ultrahigh

efficiency allows for a high amount of usable power

even in demanding thermal environments.

Device Introduction

- 3 -


Eval Board Introduction

Eval Board is populated with two i3A Converters

Converter Section #1:

I3A4W008A033V

Vi: 9 – 53 VDC

Vo: 3.3 – 16.5 Volts

8 A Max

100 W Max

Converter Section #2:

I3A4W005A150V

Vi: 9 – 53 VDC

Vo: 5 – 30 Volts

4.5 A Max

100 W Max

Input Voltage Output Voltage V out 1

Adj.

V out 2

Adj.

- 5 -


Converter #1 Test Points and Controls

TP3

Vo Sense

TP2

Trim TP1

Enable

TP15

V out+

TP3

V out -

Converter On/Off

Control

- 6 -


Converter #2 Test Points and Controls

TP10

Vo Sense

TP9

Trim TP8

Enable

TP17

V out+

TP18

V out -

Converter On/Off

Control

On Off

- 7 -


Input Section test Points

- 8 -

TP20

Vin -

TP19

Vin +

Vi: 9 – 53 VDC

Do not exceed input voltage range


Input/Output Electrical Connections & Vo Adjust

9 – 53 Volt

Input Connections Output Connections

Converter #1

Output

Converter #2

Output

V2 Output

Adjust

V1 Output

Adjust

- 9 -

Do not exceed max

input voltage


Operation

•Once input voltage is applied, either of the converters can be turned on or off using ON/OFF toggle switch.

•User can change output voltage by using Vo1 or Vo2 Trim adjust potentiometer:

•V01 Adjustment Range: 3.3 – 16.5 Volts •Vo2 Adjustment Range: 5 – 30 Volts

•Please note the specified operating ranges and keep in mind that the positive output units are step down converters. The input voltage to the converters must always be greater than the output voltage. Please see charts below:

- 10 -

Maximum attainable

output voltage for any

given input voltage

Minimum attainable

output voltage for

any given input

voltage

i3A4W008A033V i3A4W005A150V


Setup Example

48 VDC In Vo 2: 30

VDC Out Vo 1: 16.5

VDC Out

Converters can be turned on or off using toggle switches.

- 11 -


Setup Example Using Scope

• An oscilloscope can be connected to the inputs and the

outputs to observe converter behavior.

• Top trace shows input voltage rise to 48 VDC.

• Bottom Trace shows converter startup characteristic into

full load.

- 12 -


Appendix

Scope Measurement Technique When making sensitive measurements a vertical mini-probe socket should be used to connect

the oscilloscope probe to minimize loop area of the measurement leads. See scope connection

below using Agilent P/N N2768A.

- 13 -

Vertical Mini Probe

Socket P/N N2768A


Appendix

- 14 -

Scope Measurement Technique (cont.)

. Example below shows output ripple measurement on the left with a vertical mount socket

connection to the board. The right shows loop pickup.

Full load output ripple with scope socket Full load output ripple with ground loop.

Note Noise Pickup


Appendix (cont.)

- 15 -

Simplified Evaluation Board Schematic

TP151

TP161

TP171

TP19

1

TP20 1

EN2

R226

0

1 2

CCW

R835

50K1

2

3

CCW

R834 50K

1

2

3

R769

1 2

R770

1 2

GND(-)

Trim PS1

C8151000pF

12

C8171000pF

12

C818

1000pF

1 2

C8201000pF

12

C816

12

VIN+

On/Off

Vin-

SENSE+

TRIM

VOUT+

PG

VOUT-

SEQ

SYNC

M/S

PS1N/A

1

2

3

4

5

7

6

8

32

33

34

VIN+

On/Off

Vin-

SENSE+

TRIM

VOUT+

PG

VOUT-

SEQ

SYNC

M/S

PS2N/A

1

2

3

4

5

7

6

8

32

33

34

R821

0

12

R822

0

12

CCW R823

50K1

2

3

CCW

R82050K

1

2

3

VIN+

On/Off

Vin-

SENSE+

TRIM

VOUT+

PG

VOUT-

SEQ

SYNC

M/S

PS3N/A

1

2

3

4

5

7

6

8

32

33

34

Vout1_Trim

Vout1+

VIN+

On/Off

Vin-

SENSE+

TRIM

VOUT+

PG

VOUT-

SEQ

SYNC

M/S

PS4N/A

1

2

3

4

5

7

6

8

32

33

34

Vout1-

VIN+

On/Off

Vin-

SENSE+

TRIM

VOUT+

PG

VOUT-

SEQ

SYNC

M/S

PS5N/A

1

2

3

4

5

7

6

8

32

33

34

VIN+

On/Off

Vin-

SENSE+

TRIM

VOUT+

PG

VOUT-

SEQ

SYNC

M/S

PS6N/A

1

2

3

4

5

7

6

8

32

33

34

L755

270nH

1 2

Vin(+)

C310uF

12

C210uF

12

+

C810220uF

12

BB25

1 2BB261 2

BB27

1 2BB281 2

Vout2--

R126 1 2R125 1 2

BB91 2

BB12

1 2

BB13

1 2BB141 2

BB29

12

BB30

12

F10456-020-ER

1 2

F2

0456-020-ER

12

+

C813

220uF

12

R225

0

1 2R391 2

R41

0

1 2

C76410uF

12

C76510uF

12

C1410uF

12

C1510uF

12

+

C22220uF

12Power Good PS1

Enable PS1

Sense PS1

C410uF

12

C510uF

12

+

C814220uF

12

Vout2+

TP11

TP21

TP31

TP71

TP81

TP101

TP91

TP141

Enable PS2

Trim PS2

Sense PS2

Power Good PS2

BB7

N/A

1 2BB8

N/A

1 2

SPDT

SW1

12

3

SPDT

SW2

12

3

R818

0

12

R819

0

12


Appendix (cont.)

- 16 -

Evaluation Board Silkscreen


Appendix (cont.)

- 17 -

Mfr. Name Mfr. Part Number Description Ref Des

TDK C3225X7S1H106MT CERAMIC CAPACITOR, 50V, 1210, 10uF, X7S C5




PANASONIC EEEFK1J101P CAP, 100UF, 63V, SMT C810

PANASONIC EEEFK1J101P CAP, 100UF, 63V, SMT C813

TDK C2012X7S2A105K125AB CERAMIC CAPACITOR, 100V, 0805, 1.0uF C820






PULSE PA2607.271NL 270nH 30A L755

LITTLEFUSE 0456020.ER 20A SMT Fuse F1

LITTLEFUSE 0456020.ER 20A SMT Fuse F2

Power Unit Assembly I3A4W008A033V-001-R DCDC Power Module PS5

Power Unit Assembly I3A4W005A150V-001-R DCDC Power Module PS6

Evaluation Board Bill Of Materials

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