2.5 kV, Isolated DC-to-DC Converter
Data Sheet
ADuM5000W
Rev. 0 Document Feedback
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FEATURES
isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5 V output
Up to 400 mW output power
16-lead SOIC package with 7.6 mm creepage
High temperature operation: 105°C maximum
Thermal overload protection
Safety and regulatory approvals
UL recognition
2500 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A
VDE certificate of conformity (pending)
IEC 60747-5-2 (VDE 0884, Part 2)
VIORM = 560 V peak
Qualified for automotive applications
APPLICATIONS
Automotive battery monitor
RS-232/RS-422/RS-485 transceivers
Power supply startups and gate drives
Isolated sensor interfaces
FUNCTIONAL BLOCK DIAGRAM
V
DD1
GND
1
NC
RC
IN
RC
OUT
RC
SEL
V
DD1
OSC
GND
1
V
ISO
GND
ISO
NC
V
SEL
NC
NC
V
ISO
GND
ISO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
ADuM5000W
RECT REG
10971-001
Figure 1.
GENERAL DESCRIPTION
The ADuM5000W1 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 combinations of input and output voltages as listed in
Table 1.
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.
Higher output power levels are obtained by using the
ADuM5000W to augment the power output of ADuM5401,
ADuM5402, ADuM5403, ADuM5404, ADuM520x, and other
ADuM5000W iCouplers with isoPower®.
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. See the
AN-0971 Application Note for board layout recommendations.
Table 1.
Input Voltage (V) Output Voltage (V) Output Power (mW)
5 5 400
5 3.3 330
3.3 3.3 132
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.
ADuM5000W Data Sheet
Rev. 0 | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Electrical Characteristics—5 V Primary Input Supply/5 V
Secondary Isolated Supply........................................................... 3
Electrical Characteristics—3.3 V Primary Input Supply/3.3 V
Secondary Isolated Supply........................................................... 3
Electrical Characteristics—5 V Primary Input Supply/3.3 V
Secondary Isolated Supply........................................................... 4
Package Characteristics ............................................................... 5
Regulatory Information ............................................................... 5
Insulation and Safety-Related Specifications ............................ 5
IEC 60747-5-2 (VDE 0884, Part 2):2003-01 Insulation
Characteristics .............................................................................. 6
Recommended Operating Conditions ...................................... 6
Absolute Maximum Ratings ............................................................7
ESD Caution...................................................................................7
Pin Configuration and Function Descriptions ..............................8
Typical Performance Characteristics ..............................................9
Applications Information .............................................................. 11
PCB Layout ................................................................................. 11
Start-Up Behavior....................................................................... 11
EMI Considerations ................................................................... 12
Thermal Analysis ....................................................................... 12
Current Limit and Thermal Overload Protection ................. 12
Power Considerations ................................................................ 12
Increasing Available Power ....................................................... 13
Insulation Lifetime ..................................................................... 14
Outline Dimensions ....................................................................... 15
Ordering Guide .......................................................................... 15
Automotive Products ................................................................. 15
REVISION HISTORY
9/12—Revision 0: Initial Version
Data Sheet ADuM5000W
Rev. 0 | Page 3 of 16
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/5 V SECONDARY ISOLATED SUPPLY
4.5 V ≤ VDD1 ≤ 5.5 V, VSEL = VISO; each voltage is relative to its respective ground. All minimum/maximum specifications apply over the
entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = 5.0 V, VISO = 5.0 V, and
VSEL = VISO.
Table 2.
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions
DC-TO-DC CONVERTER POWER SUPPLY
Setpoint V
ISO
4.7 5.0 5.4 V I
ISO
= 0 mA
Line Regulation V
ISO(LINE)
1 mV/V I
ISO
= 40 mA, V
DD1
= 4.5 V to 5.5 V
Load Regulation V
ISO(LOAD)
1 5 % I
ISO
= 8 mA to 72 mA
Output Ripple VISO(RIP) 75 mV p-p 20 MHz bandwidth, CBO = 0.1 µF||10 µF,
I
ISO
= 72 mA
Output Noise V
ISO(N)
200 mV p-p C
BO
= 0.1 μF||10 μF, I
ISO
= 72 mA
Switching Frequency
fOSC
180
MHz
PWM Frequency f
PWM
625 kHz
I
DD1
Supply Current, Full V
ISO
Load I
DD1(MAX)
290 mA I
ISO
= 80 mA
Maximum Output Supply Current I
ISO(MAX)
80 mA V
ISO
> 4.5 V
Efficiency at Maximum Output
Supply Current
34 % IISO = 80 mA
I
DD1
Supply Current, No V
ISO
Load I
DD1(Q)
4 15 mA I
ISO
= 0 mA
Undervoltage Lockout, VDD1 and VISO
Supply
Positive Going Threshold V
UV+
2.7 V
Negative Going Threshold V
UV−
2.4 V
Hysteresis
VUVH
0.3
V
ELECTRICAL CHARACTERISTICS—3.3 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
3.0 V ≤ VDD1 ≤ 3.6 V, VSEL = GNDISO; each voltage is relative to its respective ground. All minimum/maximum specifications apply over
the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = 3.3 V, VISO = 3.3 V,
and VSEL = GNDISO.
Table 3.
Parameter Symbol Min Typ Max Unit Test Conditions
DC-TO-DC CONVERTER POWER SUPPLY
Setpoint V
ISO
3.0 3.3 3.6 V I
ISO
= 0 mA
Line Regulation V
ISO(LINE)
1 mV/V I
ISO
= 20 mA, V
DD1
= 3.0 V to 3.6 V
Load Regulation V
ISO(LOAD)
1 5 % I
ISO
= 4 mA to 36 mA
Output Ripple VISO(RIP) 50 mV p-p 20 MHz bandwidth, CBO = 0.1 μF||10 μF,
I
ISO
= 36 mA
Output Noise V
ISO(N)
130 mV p-p C
BO
= 0.1 μF||10 μF, I
ISO
= 36 mA
Switching Frequency f
OSC
180 MHz
PWM Frequency f
PWM
625 kHz
I
DD1
Supply Current, Full V
ISO
Load I
DD1(MAX)
175 mA I
ISO
= 40 mA
Maximum Output Supply Current I
ISO(MAX)
40 mA V
ISO
> 3.0 V
Efficiency at Maximum Output
Supply Current
35 % IISO = 40 mA
I
DD1
Supply Current, No V
ISO
Load I
DD1(Q)
3 12 mA I
ISO
= 0 mA
Undervoltage Lockout, VDD1 and VISO
Supply
Positive Going Threshold
VUV+
2.7
V
Negative Going Threshold V
UV−
2.4 V
Hysteresis V
UVH
0.3 V
ADuM5000W Data Sheet
Rev. 0 | Page 4 of 16
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
4.5 V ≤ VDD1 ≤ 5.5 V, VSEL = GNDISO, each voltage is relative to its respective ground. All minimum/maximum specifications apply over
the entire recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD1 = 5.0 V, VISO = 3.3 V,
and VSEL = GNDISO.
Table 4.
Parameter Symbol Min Typ Max Unit Test Conditions
DC-TO-DC CONVERTER POWER SUPPLY
Setpoint V
ISO
3.0 3.3 3.6 V I
ISO
= 0 mA
Line Regulation V
ISO(LINE)
1 mV/V I
ISO
= 50 mA, V
DD1
= 4.5 V to 5.5 V
Load Regulation V
ISO(LOAD)
1 5 % I
ISO
= 10 mA to 100 mA
Output Ripple VISO(RIP) 50 mV p-p 20 MHz bandwidth, CBO = 0.1 μF||10 μF,
I
ISO
= 90 mA
Output Noise V
ISO(N)
130 mV p-p C
BO
= 0.1 μF||10 μF, I
ISO
= 90 mA
Switching Frequency f
OSC
180 MHz
PWM Frequency
fPWM
625
kHz
I
DD1
Supply Current, Full V
ISO
Load I
DD1(MAX)
250 mA I
ISO
= 100 mA
Maximum Output Supply Current I
ISO(MAX)
100 mA V
ISO
> 3.0 V
Efficiency at Maximum Output
Supply Current
28 % IISO = 100 mA
I
DD1
Supply Current, No V
ISO
Load I
DD1(Q)
3 12 mA I
ISO
= 0 mA
Undervoltage Lockout, VDD1 and VISO
Supply
Positive Going Threshold V
UV+
2.7 V
Negative Going Threshold V
UV−
2.4 V
Hysteresis V
UVH
0.3 V
Data Sheet ADuM5000W
Rev. 0 | Page 5 of 16
PACKAGE CHARACTERISTICS
Table 5.
Parameter Symbol Min Typ Max Unit Test Conditions
RESISTANCE AND CAPACITANCE
Resistance (Input-to-Output)
1
R
I-O
10
12
Ω
Capacitance (Input-to-Output)
1
C
I-O
2.2 pF f = 1 MHz
Input Capacitance2 C
I
4.0 pF
IC Junction-to-Ambient Thermal Resistance θJA 45 °C/W Thermocouple is located at the center of
the package underside; test conducted
on a 4-layer board with thin traces3
THERMAL SHUTDOWN
Thermal Shutdown Threshold TS
SD
150 °C T
J
rising
Thermal Shutdown Hysteresis TS
SD-HYS
20 °C
1 This device is considered a 2-terminal device; Pin 1 through Pin 8 are shorted together, and Pin 9 through Pin 16 are shorted together.
2 Input capacitance is from any input data pin to ground.
3 Refer to the Power Considerations section for thermal model definitions.
REGULATORY INFORMATION
The ADuM5000W is approved by the organizations listed in Table 6. Refer to Table 11 and the Insulation Lifetime section for more
information about recommended maximum working voltages for specific cross isolation waveforms and insulation levels.
Table 6.
UL CSA VDE (Pending)
Recognized under 1577 component
recognition program1
Approved under CSA Component Acceptance
Notice #5A
Certified according to IEC 60747-5-2 (VDE 0884,
Part 2):2003-012
Single protection, 2500 V rms isolation
voltage
Testing was conducted per CSA 60950-1-07
and IEC 60950-1, 2nd Edition at 2.5 kV rated
voltage
Basic insulation at 400 V rms (566 V peak)
working voltage
Reinforced insulation at 250 V rms (353 V peak)
working voltage
Basic insulation, 560 V peak
File E214100 File 205078 File 2471900-4880-0001
1 In accordance with UL 1577, each ADuM5000W is proof tested by applying an insulation test voltage ≥ 3000 V rms for 1 sec (current leakage detection limit = 5 µA).
2 In accordance with IEC 60747-5-2 (VDE 0884, Part 2):2003-01, each ADuM5000W is proof tested by applying an insulation test voltage ≥ 1050 V peak for 1 sec (partial
discharge detection limit = 5 pC). The asterisk (*) marking branded on the component designates IEC 60747-5-2 (VDE 0884, Part 2):2003-01.
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 7.
Parameter Symbol Value Unit Conditions
Rated Dielectric Insulation Voltage 2500 V rms 1-minute duration
Minimum External Air Gap (Clearance) L(I01) 8.0 mm Measured from input terminals to output terminals,
shortest distance through air
Minimum External Tracking (Creepage) L(I02) 7.6 mm Measured from input terminals to output terminals,
shortest distance path along body
Minimum Internal Distance (Internal Clearance) 0.017
min
mm Distance through the insulation
Tracking Resistance (Comparative Tracking Index)
CTI
>175
V
DIN IEC 112/VDE 0303 Part 1
Isolation Group
IIIa
Material Group (DIN VDE 0110, 1/89, Table 1)
ADuM5000W Data Sheet
Rev. 0 | Page 6 of 16
IEC 60747-5-2 (VDE 0884, PART 2):2003-01 INSULATION CHARACTERISTICS
This power module is suitable for reinforced electrical isolation only within the safety limit data. Maintenance of the safety data is ensured
by protective circuits. The asterisk (*) marking branded on the component designates IEC 60747-5-2 (VDE 0884, Part 2):2003-01 approval.
Table 8.
Description Conditions Symbol Characteristic Unit
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 150 V rms I to IV
For Rated Mains Voltage ≤ 300 V rms I to III
For Rated Mains Voltage ≤ 400 V rms I to II
Climatic Classification 40/105/21
Pollution Degree per DIN VDE 0110, Table 1 2
Maximum Working Insulation Voltage V
IORM
560 V peak
Input-to-Output Test Voltage, Method b1
V
IORM
× 1.875 = V
pd(m)
, 100% production test, t
ini
= t
m
= 1
sec, partial discharge < 5 pC
V
pd(m)
1050
V peak
Input-to-Output Test Voltage, Method a VIORM × 1.5 = Vpd(m), tini = 60 sec, tm = 10 sec, partial
discharge < 5 pC
Vpd(m)
After Environmental Tests Subgroup 1 896 V peak
After Input and/or Safety Test Subgroup 2
and Subgroup 3
VIORM × 1.2 = Vpd(m), tini = 60 sec, tm = 10 sec, partial
discharge < 5 pC
Vpd(m) 672 V peak
Highest Allowable Overvoltage V
IOTM
4000 V peak
Surge Isolation Voltage V
PEAK
= 10 kV, 1.2 µs rise time, 50 µs, 50% fall time V
IOSM
4000 V peak
Safety-Limiting Values Maximum value allowed in the event of a failure
(see Figure 2)
Maximum Junction Temperature T
S
150 °C
Total Power Dissipation @ 25°C P
S
2.78 W
Insulation Resistance at T
S
V
IO
= 500 V R
S
>109 Ω
Thermal Derating Curve
0
0.5
1.0
1.5
2.0
2.5
3.0
050 100 150 200
AMBI E NT TE M P E RATURE (°C)
SAFE LIMITING POWER (W)
10971-002
Figure 2. Thermal Derating Curve, Dependence of Safety-Limiting Values on Case Temperature, per DIN EN 60747-5-2
RECOMMENDED OPERATING CONDITIONS
Table 9.
Parameter Symbol Min Max Unit Comments
TEMPERATURE
1
Operating Temperature T
A
−40 +105 °C
SUPPLY VOLTAGES2 Each voltage is relative to its respective ground
V
DD1
at V
SEL
= 0 V V
DD1
2.7 5.5 V
V
DD1
at V
SEL
= 5 V V
DD1
4.5 5.5 V
1 Operation at 105°C requires reduction of the maximum load current as specified in Table 10.
2 Each voltage is relative to its respective ground.
Data Sheet ADuM5000W
Rev. 0 | Page 7 of 16
ABSOLUTE MAXIMUM RATINGS
Ambient temperature = 25°C, unless otherwise noted.
Table 10.
Parameter Rating
Storage Temperature (T
ST
) −55°C to +150°C
Ambient Operating Temperature (T
A
) −40°C to +105°C
Supply Voltages (V
DDx
, V
ISO
)
1
−0.5 V to +7.0 V
Input Voltage (RC
SEL
, RC
IN
, V
SEL
)1, 2 −0.5 V to V
DDI
+ 0.5 V
Output Voltage (RC
OUT
)1, 2 −0.5 V to V
DDO
+ 0.5 V
Average Total Output Current3
IISO
100 mA
Common-Mode Transients
4
−100 kV/µs to +100 kV/µs
1 Each voltage is relative to its respective ground.
2 VDDI and VDDO refer to the supply voltages on the input and output sides of a
given channel, respectively. See the PCB Layout section.
3 See Figure 2 for maximum rated current values for various temperatures.
4 Refers to common-mode transients across the isolation barrier. Common-
mode transients exceeding the absolute maximum ratings may cause
latch-up or permanent damage.
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Table 11. Maximum Continuous Working Voltage1
Parameter Max Unit Reference Standard
AC Voltage
Bipolar Waveform
424
V peak
50-year minimum
lifetime
Unipolar Waveform
Basic Insulation 600 V peak Maximum approved
working voltage per
IEC 60950-1
Reinforced Insulation 353 V peak Maximum approved
working voltage per
IEC 60950-1
DC Voltage
Basic Insulation 600 V peak Maximum approved
working voltage per
IEC 60950-1
Reinforced Insulation 353 V peak Maximum approved
working voltage per
IEC 60950-1
1 Refers to continuous voltage magnitude imposed across the isolation
barrier. See the Insulation Lifetime section for more details.
ESD CAUTION
ADuM5000W Data Sheet
Rev. 0 | Page 8 of 16
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
V
DD1 1
GND
12
NC
3
RC
IN 4
V
ISO
16
GND
ISO
15
NC
14
V
SEL
13
RC
OUT 5
NC
12
RC
SEL 6
NC
NOTES
1. NC = NO I NTERNAL CONNECT IO N.
11
V
DD1 7
V
ISO
10
GND
18
GND
ISO
9
ADuM5000W
TOP VI EW
(No t t o Scal e)
10971-003
Figure 3. Pin Configuration
Table 12. Pin Function Descriptions
Pin No. Mnemonic Description
1, 7
V
DD1
Primary Supply Voltage 3.0 V to 5.5 V. Pin 1 and Pin 7 are internally connected to each other, and it is recom-
mended that both pins be externally connected to a common power source.
2, 8 GND1 Ground 1. Ground reference for the primary side of the converter. Pin 2 and Pin 8 are internally connected to
each other, and it is recommended that both pins be connected to a common ground.
3, 11, 12, 14 NC No Internal Connection.
4 RCIN Regulation Control Input. In slave power configuration (RCSEL = low), this pin is connected to the RCOUT pin of a
master isoPower device, or tied low to disable the converter. In master/standalone mode (RCSEL = high), this pin
has no function. This pin is weakly pulled to low. In noisy environments, it should be tied to low or to a PWM
control source. Note that this pin must not be tied high if RCSEL is low; this combination causes excessive voltage
on the secondary side of the converter, damaging the ADuM5000W and possibly the devices that it powers.
5 RCOUT Regulation Control Output. In master power configuration, this pin is connected to the RCIN pin of a slave
isoPower device to allow the ADuM5000W to regulate additional devices.
6 RCSEL Control Input. Sets either self-regulation/master mode (RCSEL high) or slave mode (RCSEL low). This pin is weakly
pulled to the high state. In noisy environments, tie this pin either high or low.
9, 15 GNDISO Ground Reference for the Secondary Side of the Converter. Pin 9 and Pin 15 are internally connected to each
other, and it is recommended that both pins be connected to a common ground.
10, 16 VISO Secondary Supply Voltage Output for External Loads, 3.3 V (VSEL low) or 5.0 V (VSEL high). 5.0 V output functionality
is not guaranteed for a 3.3 V primary supply input. Pin 10 and Pin 16 are internally connected to each other and
connecting both externally is recommended.
13 VSEL Output Voltage Selection. When VSEL = VISO, the VISO setpoint is 5.0 V. When VSEL = GNDISO, the VISO setpoint is 3.3 V.
This pin is weakly pulled to high. In noisy environments, tie this pin either high or low. In slave regulation
mode, this pin has no function.
Table 13. Truth Table (Positive Logic)1
RCSEL
Input
RCIN
Input
RCOUT
Output
VSEL
Input
VDD1
Input
VISO
Output Operation
H X PWM
2
H 5.0 V 5.0 V Master mode operation, self regulating.
H X PWM
2
L 5.0 V 3.3 V Master mode operation, self regulating.
H X PWM2 H 3.3 V 5.0 V This configuration is not recommended due to poor efficiency.
H X PWM2 L 3.3 V 3.3 V Master mode operation, self regulating.
L RC
OUT(EXT)
RC
IN
X X3 X Slave mode, RC
OUT(EXT)
supplied by a master
iso
Power device.
L L L X X 0 V Low power mode, converter disabled.
L H H X X X Note that this combination of RCIN and RCSEL is prohibited. Damage occurs
on the secondary side of the converter due to excess output voltage at
VISO. RCIN must be low, or it must be connected to a PWM signal from a
master
iso
Power part.
1 X = don’t care.
2 PWM refers to the regulation control signal. This signal is derived from the secondary side regulator or from the RCIN input, depending on the value of RCSEL.
3 VDD1 must be common between all isoPower devices being regulated by a master isoPower part.
Data Sheet ADuM5000W
Rev. 0 | Page 9 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
0
5
10
15
20
25
30
35
40
00.02 0.04 0.06 0.08 0.10
OUTPUT CURRE NT (A)
EF FICIENCY ( %)
3.3V IN/3.3V O UT
5V I N/3.3V OUT
5V I N/5V O UT
10971-004
Figure 4. Typical Power Supply Efficiency in All Supported Power
Configurations
0.12
0.10
0.08
0.06
0.04
0.02
000.05 0.10 0.15 0.20 0.25 0.30
INPUT CURRENT (A)
OUTPUT CURRENT (A)
3.3V IN/3.3V O UT
5V I N/3.3V OUT
5V I N/5V O UT
10971-005
Figure 5. Typical Isolated Output Supply Current vs. External Load
in All Supported Power Configurations
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
000.02 0.04 0.06 0.08 0.10
IISO (A)
POWER DISSIPATI O N (W)
3.3V IN/3.3V O UT
5V I N/3.3V OUT
5V I N/5V O UT
10971-122
Figure 6. Typical Total Power Dissipation vs. Isolated Output Supply Current
in All Supported Power Configurations
0
0.5
1.0
1.5
2.0
3.0
2.5
3.5
3.0 3.5 4.0 4.5 5.0 5.5 6.0
V
DD1
(V)
I
DD1
(A) AND P OWE R DISSIPAT IO N ( W)
POWER
I
DD
10971-006
Figure 7. Typical Short-Circuit Input Current and Power
vs. VDD1 Supply Voltage
(100µs/DIV)
OUTPUT VOLTAGE
(500mV/DIV)
DYNAMIC LOAD
10% LOAD
90% LOAD
10971-007
Figure 8. Typical VISO Transient Load Response, 5 V Output,
10% to 90% Load Step
(100µs/DIV)
OUTPUT VOLTAGE
(500mV/DIV)
DYNAMIC LOAD
10% LOAD
90% LOAD
10971-008
Figure 9. Typical VISO Transient Load Response, 3 V Output,
10% to 90% Load Step
ADuM5000W Data Sheet
Rev. 0 | Page 10 of 16
TIME (µs)
RIPPLE, V
ISO
= 5V (mV)
–40
–50
–60
–70
–80
–90
–100 00.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
BW = 20M Hz
10971-009
Figure 10. Typical Output Voltage Ripple at 90% Load, VISO = 5 V
TIME (µs)
RIPPLE, V
ISO
= 3.3V ( mV )
–20
–30
–40
–50
–60
–70
–80 00.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
BW = 20M Hz
10971-010
Figure 11. Typical Output Voltage Ripple at 90% Load, VISO = 3.3 V
TIME (ms)
V
ISO
(V)
7
6
5
4
3
2
1
0–1 0 1 2 3
90% LOAD
10% LOAD
10971-012
Figure 12. Typical Output Voltage Start-Up Transient
at 10% and 90% Load, VISO = 5 V
TIME (ms)
V
ISO
(V)
5
4
3
2
1
0
–1.0 –0.5 00.5 1.0 1.5 2.0 2.5 3.0
90% LOAD
10% LOAD
10971-013
Figure 13. Typical Output Voltage Start-Up Transient
at 10% and 90% Load, VISO = 3.3 V
Data Sheet ADuM5000W
Rev. 0 | Page 11 of 16
APPLICATIONS INFORMATION
The dc-to-dc converter section of the ADuM5000W works on
principles that are common to most switching power supplies.
It has a secondary side controller architecture with isolated pulse-
width modulation (PWM) feedback. VDD1 power is supplied to
an oscillating circuit that switches current into a chip scale air
core transformer. Power transferred to the secondary side is
rectified and regulated to either 3.3 V or 5 V. The secondary (VISO)
side controller regulates the output by creating a PWM control
signal that is sent to the primary (VDD1) side by a dedicated
iCoupler data channel. The PWM modulates the oscillator circuit
to control the power being sent to the secondary side. Feedback
allows for significantly higher power and efficiency.
The ADuM5000W provides a regulation control output (RCOUT)
signal that can be connected to other isoPower devices. This feature
allows a single regulator to control multiple power modules without
contention. When auxiliary power modules are present, the VISO
pins can be connected together to work as a single supply. Because
there is only one feedback control path, the supplies work together
seamlessly. The ADuM5000W can be a source of regulation
control, as well as being controlled by another isoPower device.
There is an undervoltage lockout (UVLO) with hysteresis in the
VDD1 input protection circuit. When the input voltage rises above
the UVLO threshold, the dc-to-dc converter becomes active.
The input voltage must be decreased below the turn-on threshold
by the hysteresis value to disable the converter. This feature has
many benefits in the power-up sequence of the converter, such
as ensuring that the system supply rises to a minimum level
before the ADuM5000W demands current. It also prevents any
voltage drop due to converter current from turning the supply
off and possibly oscillating.
PCB LAYOUT
The ADuM5000W digital isolator is a 0.5 W isoPower
integrated dc-to-dc converter that requires no external interface
circuitry for the logic interfaces. Power supply bypassing is
required at the input and output supply pins (see Figure 14).
The power supply section of the ADuM5000W uses a 180 MHz
oscillator frequency to pass power efficiently through its chip
scale transformers. In addition, the normal operation of the
data section of the iCoupler introduces switching transients
on the power supply pins. Bypass capacitors are required for
several operating frequencies. Noise suppression requires a low
inductance, high frequency capacitor, whereas ripple suppression
and proper regulation require a large value capacitor. These
capacitors are most conveniently connected between Pin 1
and Pin 2 for VDD1, and between Pin 15 and Pin 16 for VISO.
To suppress noise and reduce ripple, a parallel combination of
at least two capacitors is required. The recommended capacitor
values are 0.1 µF and 10 µF. Best practice recommends using a
very low inductance ceramic capacitor, or its equivalent, for the
smaller value. The total lead length between both ends of the
capacitor and the input power supply pin should not exceed
10 mm. Consider bypassing between Pin 1 and Pin 8 and
between Pin 9 and Pin 16 unless both common ground pins
are connected together close to the package.
V
DD1
GND
1
NC
RC
IN
V
ISO
GND
ISO
NC
NC
NC
V
SEL
RC
OUT
RC
SEL
V
DD1
V
ISO
GND
1
GND
ISO
10971-011
Figure 14. Recommended PCB Layout
In applications involving high common-mode transients, ensure
that board coupling across the isolation barrier is minimized.
Furthermore, design the board layout such that any coupling that
does occur affects all pins equally on a given component side.
Failure to ensure this can cause voltage differentials between
pins exceeding the absolute maximum ratings for the device
as specified in Table 10, thereby leading to latch-up and/or
permanent damage.
The ADuM5000W is a power device that dissipates approxi-
mately 1 W of power when fully loaded. Because it is not possible
to apply a heat sink to an isolation device, the device primarily
depends on heat dissipation into the PCB through the GND
pins. If the device is used at high ambient temperatures, provide
a thermal path from the GND pins to the PCB ground plane.
The board layout in Figure 14 shows enlarged pads for Pin 2
and Pin 8 (GND1) and for Pin 9 and Pin 15 (GNDISO). Imple-
ment multiple vias from the pad to the ground plane to
significantly reduce the temperature inside the chip. The
dimensions of the expanded pads are at the discretion of
the designer and depend on the available board space.
START-UP BEHAVIOR
The ADuM5000W does not contain a soft start circuit. Take the
start-up current and voltage behavior into account when designing
with this device.
When power is applied to VDD1, the input switching circuit begins
to operate and draw current when the UVLO minimum voltage
is reached. The switching circuit drives the maximum available
power to the output until it reaches the regulation voltage where
PWM control begins. The amount of current and time this
takes depends on the load and the VDD1 slew rate.
ADuM5000W Data Sheet
Rev. 0 | Page 12 of 16
With a fast VDD1 slew rate (200 µs or less), the peak current
draws up to 100 mA/V of VDD1. The input voltage goes high
faster than the output can turn on; therefore, the peak current
is proportional to the maximum input voltage.
With a slow VDD1 slew rate (in the millisecond range), the input
voltage does not change quickly when VDD1 reaches UVLO. The
current surge is about 300 mA because VDD1 is nearly constant at
the 2.7 V UVLO point. The behavior during start-up is similar
to when the device load is a short circuit; these values are con-
sistent with the short-circuit current shown in Figure 7.
When starting the device for VISO = 5 V operation, do not limit
the current available to the VDD1 power pin to less than 300 mA.
The ADuM5000W may not be able to drive the output to the
regulation point if a current-limiting device clamps the VDD1
voltage during startup. As a result, the ADuM5000W can draw
large amounts of current at low voltage for extended periods.
The output voltage of the ADuM5000W device exhibits VISO
over-shoot during startup. If this could potentially damage
components attached to VISO, then a voltage-limiting device,
such as a Zener diode, can be used to clamp the voltage.
Typical behavior is shown in Figure 12 and Figure 13.
EMI CONSIDERATIONS
It is necessary for the dc-to-dc converter section of the
ADuM5000W to operate at 180 MHz to allow efficient power
transfer through the small transformers. This creates high
frequency currents that can propagate in circuit board ground
and power planes, causing edge emissions and dipole radiation
between the input and output ground planes. Grounded
enclosures are recommended for applications that use these
devices. If grounded enclosures are not possible, follow good
RF design practices in the layout of the PCB. See the AN-0971
Application Note for board layout recommendations.
THERMAL ANALYSIS
The ADuM5000W consists of four internal silicon die, attached
to a split lead frame with two die attach paddles. For the
purposes of thermal analysis, it is treated as a thermal unit with
the highest junction temperature reflected in the θJA from Table 5.
The value of θJA is based on measurements taken with the part
mounted on a JEDEC standard 4-layer board with fine width
traces and still air. Under normal operating conditions, the
ADuM5000W operates at full load across the full temperature
range without derating the output current. However, following
the recommendations in the PCB Layout section decreases the
thermal resistance to the PCB, allowing increased thermal
margin at high ambient temperatures.
CURRENT LIMIT AND THERMAL OVERLOAD
PROTECTION
The ADuM5000W is protected against damage due to excessive
power dissipation by thermal overload protection circuits. Thermal
overload protection limits the junction temperature to a maximum
of 150°C (typical). Under extreme conditions (that is, high ambient
temperature and power dissipation), when the junction temper-
ature starts to rise above 150°C, the PWM is turned off, which
turns off the output current. When the junction temperature
falls below 130°C (typical), the PWM turns on again, restoring
the output current to its nominal value.
Consider the case where a hard short from VISO to ground occurs.
At first, the ADuM5000W reaches its maximum current, which
is proportional to the voltage applied at VDD1. Power dissipates
on the primary side of the converter (see Figure 7). If self-heating
of the junction becomes great enough to cause its temperature to
rise above 150°C, thermal shutdown activates, turning off the
PWM and turning off the output current. As the junction
temperature cools and falls below 130°C, the PWM turns on
and power dissipates again on the primary side of the converter,
causing the junction temperature to rise to 150°C again. This
thermal oscillation between 130°C and 150°C causes the part
to cycle on and off as long as the short remains at the output.
Thermal limit protections are intended to protect the device
against accidental overload conditions. For reliable operation,
externally limit device power dissipation to prevent junction
temperatures from exceeding 130°C.
POWER CONSIDERATIONS
The ADuM5000W converter primary side is protected from
pre-mature operation by undervoltage lockout (UVLO)
circuitry. Below the minimum operating voltage, the power
converter holds its oscillator inactive.
When the primary side oscillator begins to operate, it transfers
power to the secondary power circuits. The secondary VISO voltage
starts below its UVLO limit making it inactive and unable to
generate a regulation control signal. The primary side power
oscillator is allowed to free run under this condition, supplying
the maximum amount of power to the secondary side.
As the secondary side voltage rises to its regulation setpoint,
a large inrush current transient is present at VDD1. When the
regulation point is reached, the regulation control circuit produces
the regulation control signal that modulates the oscillator on the
primary side. The VDD1 current is then reduced and is proportional
to the load current. The inrush current is less than the short-
circuit current shown in Figure 7. The duration of the inrush
depends on the VISO loading conditions and on the current and
voltage available at the VDD1 pin.
Data Sheet ADuM5000W
Rev. 0 | Page 13 of 16
INCREASING AVAILABLE POWER
The ADuM5000W device is designed to work in combination with
other compatible isoPower devices. The RCOUT, RCIN, and RCSEL
pins allow the ADuM5000W to provide its PWM signal to another
device through the RCOUT pin acting as a master. It can also
receive a PWM signal from another device through its RCIN
pin and act as a slave to that control signal. The RCSEL pin
chooses whether the part acts as a master or slave device.
When the ADuM5000W is acting as a slave, its power is
regulated by the master device, allowing multiple isoPower
parts to be combined in parallel while sharing the load equally.
When the ADuM5000W is configured as a master or stand-
alone unit, it generates its own PWM feedback signal to
regulate itself and slave devices.
The ADuM5000W can function as a master, slave, or stand-
alone device. All devices in the ADuM5xxx and ADuM6xxx
family can function as standalone devices. Some of these
devices also function as master devices or slave devices, but
not both (see Table 14).
Table 15 shows how isoPower devices can provide many
combinations of data channel count and multiples of the
single unit power.
Table 14. Allowed Combinations of isoPower Parts
Part No.
Function
Master Slave Standalone
ADuM6000 Yes Yes Yes
ADuM620x No Yes Yes
ADuM640x No No Yes
ADuM5000 Yes Yes Yes
ADuM520x No Yes Yes
ADuM5400 No No Yes
ADuM5401 to
ADuM5404
Yes No Yes
Another feature allowed by the RCSEL and RCIN control architecture
is the ability to completely shut down the oscillator in the dc-to-
dc converter. This places the part in a low power standby mode
and reduces the current draw to a fraction of a milliamp.
When the ADuM5000W is placed in slave mode by driving
RCSEL low, the oscillator is controlled by RCIN. If RCIN is held
low, the oscillator is shut down and the part is in low power
standby mode. With no oscillator driving power to the second-
ary side, VISO turns off. This mode is useful for applications
where an isolated subsystem may be shut down to conserve
power. To reactivate the power module, drive RCSEL high; the
power supply resumes operation.
Table 15. Configurations for Power and Data Channels
Power
Units
Number of Data Channels
0 Channels 2 Channels 4 Channels
1-Unit
Power
ADuM6000 or ADuM5000W
(standalone)
ADuM620x or ADuM520x
(standalone)
ADuM5401, ADuM5402, ADuM5403,
ADuM5404, or ADuM640x
(standalone)
2-Unit
Power
ADuM6000 or ADuM5000W (master)
ADuM6000 or ADuM5000W (slave)
ADuM6000 or ADuM5000W (master)
ADuM620x or ADuM520x (slave)
ADuM5401, ADuM5402, ADuM5403,
ADuM5404 (master)
ADuM6000 or ADuM5000W (slave)
3-Unit
Power
ADuM6000 or ADuM5000W (master) ADuM6000 or ADuM5000W (master) ADuM6000 or ADuM5000W (master)
ADuM6000 or ADuM5000W (slave) ADuM6000 or ADuM5000W (slave) ADuM620x or ADuM520x (slave)
ADuM6000 or ADuM5000W (slave) ADuM620x or ADuM520x (slave) ADuM620x or ADuM520x (slave)
ADuM5000W Data Sheet
Rev. 0 | Page 14 of 16
INSULATION LIFETIME
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of insu-
lation degradation is dependent on the characteristics of the
voltage waveform applied across the insulation. In addition to
the testing performed by the regulatory agencies, Analog Devices
carries out an extensive set of evaluations to determine the life-
time of the insulation structure within the ADuM5000W.
Analog Devices performs accelerated life testing using voltage
levels higher than the rated continuous working voltage. Accel-
eration factors for several operating conditions are determined.
These factors allow calculation of the time to failure at the actual
working voltage. The values shown in Table 11 summarize the
peak voltage for 50 years of service life for a bipolar ac operating
condition, and the maximum CSA/VDE approved working
voltages. In many cases, the approved working voltage is higher
than 50-year service life voltage. Operation at these high work-
ing voltages can lead to shortened insulation life in some cases.
The insulation lifetime of the ADuM5000W depends on the
voltage waveform imposed across the isolation barrier. The
iCoupler insulation structure degrades at different rates
depending on whether the waveform is bipolar ac, unipolar ac,
or dc. Figure 15, Figure 16, and Figure 17 illustrate these different
isolation voltage waveforms.
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the ac bipolar condition
determines the maximum working voltage that Analog Devices
recommends.
In the case of unipolar ac or dc voltage, the stress on the insula-
tion is significantly lower. This allows operation at higher working
voltages while still achieving a 50-year service life. The working
voltages listed in Table 11 can be applied while maintaining the
50-year minimum lifetime, provided the voltage conforms to
either the unipolar ac or dc voltage cases. Treat any cross insu-
lation voltage waveform that does not conform to Figure 16 or
Figure 17 as a bipolar ac waveform and limit its peak voltage to
the 50-year lifetime voltage value listed in Table 11. The voltage
presented in Figure 16 is shown as sinusoidal for illustration
purposes only. It is meant to represent any voltage waveform
varying between 0 V and some limiting value. The limiting
value can be positive or negative, but the voltage cannot cross 0 V.
0V
RATED P E AK V OL TAGE
10971-021
Figure 15. Bipolar AC Waveform
0V
RATED P E AK V OL TAGE
10971-022
Figure 16. Unipolar AC Waveform
0V
RATED P E AK V OL TAGE
10971-023
Figure 17. DC Waveform
Data Sheet ADuM5000W
Rev. 0 | Page 15 of 16
OUTLINE DIMENSIONS
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHE
SES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
COMPLIANT TO JEDEC STANDARDS MS-013-AA
10.50 (0.4134)
10.10 (0.3976)
0.30 (0.0118)
0.10 (0.0039)
2.65 (0.1043)
2.35 (0.0925)
10.65 (0.4193)
10.00 (0.3937)
7.60 (0.2992)
7.40 (0.2913)
0.75 (0.0295)
0.25 (0.0098)
45°
1.27 (0.0500)
0.40 (0.0157)
COPLANARITY
0.10 0.33 (0.0130)
0.20 (0.0079)
0.51 (0.0201)
0.31 (0.0122)
SEATING
PLANE
8°
0°
16 9
8
1
1.27 (0.0500)
BSC
03-27-2007-B
Figure 18. 16-Lead Standard Small Outline Package [SOIC_W]
Wide Body
(RW-16)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model
1, 2
Temperature Range Package Description Package Option
ADuM5000WARWZ −40°C to +105°C 16-Lead SOIC_W RW-16
ADUM5000WARW-RL −40°C to +105°C 16-Lead SOIC_W, 13” Tape and Reel RW-16
1 Z = RoHS Compliant Part.
2 W = Qualified for Automotive Applications.
AUTOMOTIVE PRODUCTS
The ADuM5000W model is available with controlled manufacturing to support the quality and reliability requirements of automotive
applications. Note that these automotive model may have specifications that differ from the commercial model; therefore, designers
should review the Specifications section of this data sheet carefully. Only the automotive grade products shown are available for use in
automotive applications. Contact your local Analog Devices account representative for specific product ordering information and to
obtain the specific Automotive Reliability reports for these models.
ADuM5000W Data Sheet
Rev. 0 | Page 16 of 16
NOTES
©2012 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D10971-0-9/12(0)
