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Quad-Channel Isolators with
Integrated DC-to-DC Converter
Data Sheet
FEATURES
iso Power integrated, isolated dc-to-dc converter
ADuM5401W / ADuM5402W / ADuM5403W
FUNCTIONAL BLOCK DIAGRAMS
Qualified for automotive applications
Regulated 5 V or 3.3 V output
Up to 500 mW output power
V DD1 1
GND 1 2
OSC
RECT
REG
16 V ISO
15 GND ISO
Quad dc-to-25 Mbps (NRZ) signal isolation channels
16-lead SOIC package with 7.6 mm creepage
High temperature operation: 105°C
High common-mode transient immunity: >25 kV/μs
Safety and regulatory approvals
V IA 3
V IB /V OB 4
V IC /V OC 5
V OD 6
RC OUT 7
4 CHANNEL i COUPLER CORE
ADuM5401W/ADuM5402W/
ADuM5403W
14 V OA
13 V OB /V IB
12 V OC /V IC
11 V ID
10 V SEL
UL recognition: 2500 V rms for 1 minute per UL 1577
GND 1 8
9
GND ISO
CSA Component Acceptance Notice #5A
VDE certificate of conformity
DIN EN 69747-5-2 (VDE 0884 Teil 2):2003-1
Figure 1. ADuM5401W/ADuM5402W/ADuM5403W Block Diagram
V IORM = 565 V peak
V IA
3
14
V OA
V IB
4
ADuM5401W
13
V OB
APPLICATIONS
Hybrid electric battery management
V IC
V OD
5
6
12
11
V OC
V ID
Figure 2. ADuM5401W
GENERAL DESCRIPTION
The ADuM5401W/ADuM5402W/ADuM5403W 1 devices are
quad-channel digital isolators with iso Power?, an integrated,
isolated dc-to-dc converter. Based on the Analog Devices, Inc.,
i Coupler? technology, the dc-to-dc converter provides up to
500 mW of regulated, isolated power at 5.0 V (see Table 1).
V IA
V IB
V OC
V OD
3
4
5
6
ADuM5402W
14
13
12
11
V OA
V OB
V IC
V ID
These devices eliminate the need for a separate, isolated dc-to-
dc converter in low power, isolated designs. The i Coupler chip
Figure 3. ADuM5402W
scale transformer technology is used to isolate the logic signals
and for the magnetic components of the dc-to-dc converter.
The result is a small form factor, total isolation solution.
The ADuM5401W-1/ADuM5402W-1/ADuM5403W-1
versions of the isolators provide an upgraded voltage reference
V IA
V OB
V OC
V OD
3
4
5
6
ADuM5403W
14
13
12
11
V OA
V IB
V IC
V ID
to ensure proper startup under all load conditions (see the
Ordering Guide for more information).
iso Power uses high frequency switching elements to transfer
power through its transformer. Special care must be taken
during printed circuit board (PCB) layout to meet emissions
standards. See the AN-0971 Application Note for board layout
recommendations.
Table 1. Power Levels
Input Voltage (V) Output Voltage (V)
5.0 5.0
5.0 3.3
3.3 3.3
Figure 4. ADuM5403W
Output Power (mW)
500
330
200
1
Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
Rev. D
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ?2010–2013 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
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