Isolated DC-to-DC Converter
ADuM5000
FUNCTIONAL BLOCK DIAGRAM
FEATURES
isoPower, integrated isolated dc-to-dc converter
Regulated 3.3 V or 5 V output
Up to 500 mW output power
16-lead SOIC package with >8 mm creepage
High temperature operation: 105°C maximum
High common-mode transient immunity: >25 kV/μs
Thermal overload protection
Safety and regulatory approvals
UL recognition
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A (pending)
VDE certificate of conformity (pending)
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
1
2
3
4
5
6
7
8
16
V
V
OSC
RECT REG
DD1
ISO
GND
15 GND
ISO
1
14
13
12
11
10
9
NC
NC
RC
V
SEL
IN
RC
NC
NC
OUT
RC
V
SEL
V
DD1
ISO
GND
GND
ISO
1
ADuM5000
Figure 1.
V
IORM = 560 V peak
APPLICATIONS
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply startups and gate drives
Isolated sensor interfaces
Industrial PLCs
GENERAL DESCRIPTION
The ADuM50001 is an isolated dc-to-dc converter based on the
Analog Devices, Inc., iCoupler® technology. The dc-to-dc converter
in this device provides regulated, isolated power in several combi-
nations of input and output voltage as listed in Table 1.
isoPower 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. Refer to the AN-0971 application note for board
layout recommendations.
The Analog Devices chip-scale transformer iCoupler technology
transfers isolated power in this dc-to-dc converter with up to
33% efficiency. The result is a small form factor, total isolation
solution.
Table 1.
Input Voltage
Output Voltage
Output Power
500 mW
5 V
5 V
Higher output power levels are obtained by using the ADuM5000
to augment the power output of ADuM5401, ADuM5402,
ADuM5403, ADuM5404, and ADuM520x iCouplers with
isoPower®.
5 V
3.3 V
3.3 V
3.3 V
330 mW
200 mW
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329; other patents pending.
Rev. 0
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