EVAL-ADUM4070EBZ Datasheet EVAL-ADUM4070EBZ | P1-P3

Evaluation Board User Guide

UG-403

One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com

Evaluating the iCoupler ADuM4070 Isolated Switching Regulator

with Integrated Feedback

See the last page for an important warning and disclaimers. Rev. 0 | Page 1 of 12

FEATURES

ADuM4070 circuit, including 5 kV rms isolated dc-to-dc

converters

Single supply (default)

5 V input to 5 V output (regulated)

Reconfigurable to 5 V input to 3.3 V output or

3.3 V input to 3.3 V output

Double supply

5 V input to 15 V output (regulated) and 7.5 V output

(unregulated)

Reconfigurable to 5 V input to 12 V output (regulated)

and 6 V output (unregulated)

Footprints for Coilcraft, Inc., and Halo Electronics, Inc.,

transformer options

Multiple switching frequency options

SUPPORTED iCoupler MODELS

ADuM4070

GENERAL DESCRIPTION

The EVA L-ADuM4070EBZ can be used for different applications

of the ADuM4070 isolated switching regulator. With the ability

to be configured as a circuit with either single- (default) or

double-supply output, the board supports a variety of input/output

configurations and multiple transformer options. It is equipped

with an ADuM4070 regulator for voltage isolation; the regulator

features integrated feedback and a switching frequency that can be

set from 200 kHz to 1000 kHz.

This user guide provides all the necessary details to set up and

use the EVA L -ADuM4070EBZ board. Additional information

about the ADuM4070 device is available in the ADuM4070 data

sheet, which should be consulted in conjunction with this user

guide when using the EVA L-ADuM4070EBZ board.

ADuM4070 EVALUATION BOARD PHOTOGRAPH

10663-001

Figure 1. Single-Supply and Double-Supply Configurations

UG-403 Evaluation Board User Guide

Rev. 0 | Page 2 of 12

TABLE OF CONTENTS

Features .............................................................................................. 1

Supported iCoupler Models ............................................................ 1

General Description ......................................................................... 1

ADuM4070 Evaluation Board Photograph ................................... 1

Revision History ............................................................................... 2

Configuring the Board for Single- or Double-Supply Output ... 3

Single Supply ..................................................................................... 4

Terminals ....................................................................................... 4

Transformer Selection .................................................................. 5

Switching Frequency Options ..................................................... 5

Other Input and Isolated Output Supply Options ....................5

Double Supply ....................................................................................7

Terminals ........................................................................................7

Transformer Selection ..................................................................7

Switching Frequency Options......................................................7

Other Secondary Isolated Supply Configurations ....................8

Evaluation Board Schematic and Artwork .....................................9

Evaluation Board Layout ..............................................................9

Bill of Materials ............................................................................... 10

REVISION HISTORY

3/13—Revision 0: Initial Version

Evaluation Board User Guide UG-403

Rev. 0 | Page 3 of 12

CONFIGURING THE BOARD FOR SINGLE- OR DOUBLE-SUPPLY OUTPUT

The ADuM4070 evaluation board can be configured for an isolated

circuit with either single- or double-supply output. See Table 1 for

information about the setup of the feedback divider resistors for

the single- and double-supply configurations. For additional appli-

cations information about the ADuM4070 in these configurations,

see the ADuM4070 data sheet. Figure 12 shows the schematic for

the EVA L-ADuM4070EBZ board in single- and double-supply

configurations.

Table 1. Feedback Divider Resistors Configuration

Configuration R6 R10 R11 R15

3.3 V Single 17.4 kΩ 0 Ω 14.3 kΩ 10.5 kΩ

5 V Single

17.4 kΩ

Open

14.3 kΩ

10.5 kΩ

12 V Double 90.9 kΩ 0 Ω 24.9 kΩ 10.5 kΩ

15 V Double 90.9 kΩ Open 24.9 kΩ 10.5 kΩ

The single- or double-supply configuration can be selected by

changing the output mode resistor values as described in Table 2.

Table 2. Output Mode Resistors Configuration

Configuration R5 R7 R8 R9 R19

3.3 V/5 V Single Open 0 Ω Open 0 Ω 0 Ω

12 V/15 V Double 0 Ω Open 0 Ω Open Open

±15 V Double Open 0 Ω Open 0 Ω Open

After setting the feedback divider and output mode resistors,

refer to the Single Supply or Double Supply section for additional

information about configuring the EVA L-ADuM4070EBZ board.

P1-P3 P4-P6 P7-P9 P10-P12

EVAL-ADUM4070EBZ

Mfr. #:

Buy EVAL-ADUM4070EBZ

Manufacturer:

Analog Devices Inc.

Description:

ADUM4070 Digital Isolator Evaluation Board

Lifecycle:

New from this manufacturer.

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EVAL-ADUM4070EBZ