isoPower integrated, isolated dc-to-dc converter
Regulated 5 V or 3.3 V output
Up to 400 mW output power
Dual dc-to-25 Mbps (NRZ) signal isolation channels
16-lead SOIC wide body package version
16-lead SOIC wide body enhanced creepage version
High temperature operation: 105°C maximum
Safety and regulatory approvals
UL recognition
5000 V rms for 1 minute per UL 1577
CSA Component Acceptance Notice #5A (Pending)
IEC 60601-1: 250 V rms, 8 mm package (RI-16-1)
IEC 60950-1: 400 V rms, 8 mm package (RI-16-1)
VDE Certificate of Conformity (RW-16) (Pending)
IEC 60747-5-2 (VDE 0884 Part 2):2003-01
V
= 846 V peak
IORM
VDE Certificate of Conformity, 8 mm package (RI-16-1)
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
V
= 846 V peak
IORM
APPLICATIONS
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Isolated sensor interfaces
Industrial PLCs
V
DD1
GND
VIA/V
VIB/V
RC
RC
SEL
VE1/NC
GND
NC = NO CONNECT
GENERAL DESCRIPTION
The ADuM6200/ADuM6201/ADuM62021 are dual-channel
digital isolators with isoPower®, an integrated, isolated dc-to-dc
converter. Based on the Analog Devices, Inc., iCoupler® technology,
the dc-to-dc converter provides up to 400 mW of regulated, isolated power at either 5.0 V or 3.3 V from a 5.0 V input supply, or
at 3.3 V from a 3.3 V supply at the power levels shown in Tab l e 1.
These devices eliminate the need for a separate, isolated dc-to-dc
converter in low power, isolated designs. The iCoupler chip 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 ADuM6200/ADuM6201/ADuM6202 isolators provide two
independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide for more information).
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.
1
Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329; other patents are pending.
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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.
Table 1. Power Levels
Input Voltage (V) Output Voltage (V) Output Power (mW)
Changes to Features Section............................................................ 1
Changes to Table 15 and Table 16 .................................................. 8
Changes to Table 20........................................................................ 10
10/10—Revision 0: Initial Version
Rev. B | Page 2 of 28
Page 3
Data Sheet ADuM6200/ADuM6201/ADuM6202
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/5 V SECONDARY ISOLATED SUPPLY
Typical specifications are at TA = 25°C, V
operation range, which is 4.5 V ≤ V
tested with C
= 15 pF and CMOS signal levels, unless otherwise noted.
L
DD1
Table 2. DC-to-DC Converter Static Specifications
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
DC-TO-DC CONVERTER SUPPLY
Setpoint V
Line Regulation V
Load Regulation V
Output Ripple V
Output Noise V
Switching Frequency f
PWM Frequency f
Output Supply Current I
Efficiency at I
I
, No V
DD1
I
DD1
, Full V
ISO
ISO
32 % I
ISO(MAX)
Load I
Load I
ISO
ISO(LINE)
ISO(LOAD)
ISO(RIP)
ISO(NOISE)
OSC
PWM
ISO(MAX)
DD1(Q)
DD1(MAX)
= V
= V
DD1
SEL
, V
, V
≤ 5.5 V, and −40°C ≤ TA ≤ +105°C, unless otherwise noted. Switching specifications are
SEL
ISO
4.7 5.0 5.4 V I
1 mV/V I
1 5 % I
= 5 V. Minimum/maximum specifications apply over the entire recommended
ADuM6200 9 34 mA No V
ADuM6201 10 38 mA No V
ADuM6202 11 41 mA No V
Available to Load I
ADuM6200
DD1(D)
ISO(LOAD)
80 74 mA
ISO
ISO
ISO
load
load
load
ADuM6201 80 72 mA
ADuM6202 80 70 mA
Table 4. Switching Specifications
A Grade C Grade
Parameter Symbol
Min Typ Max Min Typ Max
Unit
Test Conditions/
Comments
SWITCHING SPECIFICATIONS
Data Rate 1 25 Mbps Within PWD limit
Propagation Delay t
Pulse Width Distortion PWD 40 6 ns |t
, t
55 100 45 60 ns 50% input to 50% output
PHL
PLH
− t
PHL
|
PLH
Change vs. Temperature 5 ps/°C
Pulse Width PW 1000 40 ns Within PWD limit
Propagation Delay Skew t
50 15 ns Between any two units
PSK
Channel Matching
Codirectional1 t
Opposing Directional2 t
1
7Codirectional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on the same side of the isolation
barrier.
2
Opposing directional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposite sides of the
isolation barrier.
50 6 ns
PSKCD
50 15 ns
PSKOD
Rev. B | Page 3 of 28
Page 4
ADuM6200/ADuM6201/ADuM6202 Data Sheet
Table 5. Input and Output Characteristics
Test Conditions/
Parameter Symbol Min Typ Max Unit
DC SPECIFICATIONS
Logic High Input Threshold VIH 0.7 × V
Logic Low Input Threshold VIL 0.3 × V
Logic High Output Voltages VOH V
V
− 0.3 or V
DD1
− 0.5 or V
DD1
or 0.7 × V
ISO
V
DD1
or 0.3 × V
ISO
− 0.3 5.0 V IOx = −20 μA, VIx = V
ISO
− 0.5 4.8 V IOx = −4 mA, VIx = V
ISO
V
DD1
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 μA, VIx = V
0.2 0.4 V IOx = 4 mA, VIx = V
Undervoltage Lockout UVLO V
Positive-Going Threshold V
Negative-Going Threshold V
Hysteresis V
UV+
UV−
UVH
2.7 V
2.4 V
0.3 V
Input Currents per Channel II −20 +0.01 +20 μA 0 V ≤ VIx ≤ V
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 2.5 ns 10% to 90%
Common-Mode Transient
Immunity
1
|CM| 25 35 kV/μs
Refresh Rate fr 1.0 Mbps
1
|CM | is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.7 × V
input. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges.
or 0.7 × V
DD1
for a high input or VO < 0.3 × V
ISO
ELECTRICAL CHARACTERISTICS—3.3 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
Typical specifications are at TA = 25°C, V
recommended operation range, which is 3.0 V ≤ V
specifications are tested with C
= 15 pF and CMOS signal levels, unless otherwise noted.
L
DD1
= V
= 3.3 V, V
ISO
, V
DD1
= GND
SEL
, V
≤ 3.6 V, and −40°C ≤ TA ≤ +105°C, unless otherwise noted. Switching
SEL
ISO
. Minimum/maximum specifications apply over the entire
ISO
Comments
IxH
IxH
IxL
IxL
, V
supplies
DD1
ISO
DDx
= V
or V
V
Ix
DD1
, VCM = 1000 V,
ISO
transient magnitude = 800 V
or 0.3 × V
DD1
for a low
ISO
Table 6. DC-to-DC Converter Static Specifications
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
DC-TO-DC CONVERTER SUPPLY
Setpoint V
Line Regulation V
Load Regulation V
Output Ripple V
Output Noise V
Switching Frequency f
PWM Frequency f
Output Supply Current I
Efficiency at I
I
Data Rate 1 25 Mbps Within PWD limit
Propagation Delay t
, t
60 100 45 65 ns 50% input to 50% output
PHL
PLH
Pulse Width Distortion PWD 40 6 ns |t
Change vs. Temperature 5 ps/°C
Pulse Width PW 1000 40 ns Within PWD limit
Propagation Delay Skew t
50 45 ns Between any two units
PSK
Channel Matching
Codirectional1 t
Opposing Directional2 t
1
7Codirectional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on the same side of the isolation
barrier.
2
Opposing directional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposite sides of the
isolation barrier.
50 6 ns
PSKCD
50 15 ns
PSKOD
Test Conditions/
Comments
load
ISO
load
ISO
load
ISO
Test Conditions/
Comments
− t
PHL
|
PLH
Table 9. Input and Output Characteristics
Test Conditions/
Parameter Symbol Min Typ Max Unit
Comments
DC SPECIFICATIONS
Logic High Input Threshold VIH 0.7 × V
Logic Low Input Threshold VIL 0.3 × V
Logic High Output Voltages VOH V
V
− 0.3 or V
DD1
− 0.5 or V
DD1
or 0.7 × V
ISO
V
DD1
or 0.3 × V
ISO
− 0.3 3.3 V IOx = −20 μA, VIx = V
ISO
− 0.5 3.1 V IOx = −4 mA, VIx = V
ISO
V
DD1
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 μA, VIx = V
0.0 0.4 V IOx = 4 mA, VIx = V
Undervoltage Lockout UVLO V
Positive-Going Threshold V
Negative-Going Threshold V
Hysteresis V
UV+
UV−
UVH
2.7 V
2.4 V
0.3 V
DD1
, V
ISO
supplies
Input Currents per Channel II −20 +0.01 +20 μA 0 V ≤ VIx ≤ V
DDx
IxL
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 2.5 ns 10% to 90%
Common-Mode Transient
Immunity
1
|CM| 25 35 kV/μs
V
Ix
transient magnitude = 800 V
= V
DD1
or V
ISO
, VCM = 1000 V,
Refresh Rate fr 1.0 Mbps
1
|CM | is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.7 × V
input. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges.
Rev. B | Page 5 of 28
or 0.7 × V
DD1
for a high input or VO < 0.3 × V
ISO
or 0.3 × V
DD1
IxH
IxH
IxL
for a low
ISO
Page 6
ADuM6200/ADuM6201/ADuM6202 Data Sheet
ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY
Typical specifications are at TA = 25°C, V
recommended operation range, which is 4.5 V ≤ V
Switching specifications are tested with C
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
DC-TO-DC CONVERTER SUPPLY
Setpoint V
Line Regulation V
Load Regulation V
Output Ripple V
Output Noise V
Switching Frequency f
PWM Frequency f
Output Supply Current I
Efficiency at I
I
Data Rate 1 25 Mbps Within PWD limit
Propagation Delay t
Pulse Width Distortion PWD 40 6 ns |t
, t
60 100 45 65 ns 50% input to 50% output
PHL
PLH
− t
PHL
|
PLH
Change vs. Temperature 5 ps/°C
Pulse Width PW 1000 40 ns Within PWD limit
Propagation Delay Skew t
50 15 ns Between any two units
PSK
Channel Matching
Codirectional1 t
Opposing Directional2 t
1
7Codirectional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on the same side of the isolation
barrier.
2
Opposing directional channel matching is the absolute value of the difference in propagation delays between any two channels with inputs on opposite sides of the
isolation barrier.
50 6 ns
PSKCD
50 15 ns
PSKOD
Rev. B | Page 6 of 28
Page 7
Data Sheet ADuM6200/ADuM6201/ADuM6202
Table 13. Input and Output Characteristics
Parameter Symbol Min Typ Max Unit Test Conditions/ Comments
DC SPECIFICATIONS
Logic High Input Threshold VIH
0.7 × V
0.7 × V
ISO
DD1
or
Logic Low Input Threshold VIL
Logic High Output Voltages VOH
V
DD1
V
ISO
V
DD1
V
ISO
− 0.3 or
− 0.3
− 0.5 or
− 0.5
Logic Low Output Voltages VOL 0.0 0.1 V IOx = 20 μA, VIx = V
0.0 0.4 V IOx = 4 mA, VIx = V
Undervoltage Lockout UVLO V
Positive-Going Threshold V
Negative-Going Threshold V
Hysteresis V
UV+
UV−
UVH
2.7 V
2.4 V
0.3 V
Input Currents per Channel II −20 +0.01 +20 μA 0 V ≤ VIx ≤ V
AC SPECIFICATIONS
Output Rise/Fall Time tR/tF 2.5 ns 10% to 90%
Common-Mode Transient
Immunity
1
|CM| 25 35 kV/μs
Refresh Rate fr 1.0 Mbps
1
|CM | is the maximum common-mode voltage slew rate that can be sustained while maintaining VO > 0.7 × V
input. The common-mode voltage slew rates apply to both rising and falling common-mode voltage edges.
V
V
for a high input or VO < 0.3 × V
ISO
V
DD1
V
DD1
V
ISO
ISO
DD1
or
0.3 × V
0.3 × V
or V
V IOx = −20 μA, VIx = V
ISO
− 0.2 or
V I
− 0.2
or 0.7 × V
DD1
IxH
= −4 mA, VIx = V
Ox
, V
supplies
DD1
ISO
DDx
= V
V
or V
Ix
DD1
IxH
IxL
IxL
, VCM = 1000 V,
ISO
transient magnitude = 800 V
or 0.3 × V
DD1
for a low
ISO
PACKAGE CHARACTERISTICS
Table 14.
Parameter Symbol Min Typ Max Unit Test Conditions/Comments
RESISTANCE AND CAPACITANCE
Resistance (Input-to-Output)1 R
Capacitance (Input-to-Output)1 C
Input Capacitance2 C
IC Junction-to-Ambient Thermal
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 section for thermal model definitions. Thermal Analysis
1012 Ω
I-O
2.2 pF f = 1 MHz
I-O
4.0 pF
I
45 °C/W
θ
JA
Thermocouple is located at the center of
the package underside; test conducted
on a 4-layer board with thin traces
20 °C
SD-HYS
3
Rev. B | Page 7 of 28
Page 8
ADuM6200/ADuM6201/ADuM6202 Data Sheet
REGULATORY INFORMATION
The ADuM6200/ADuM6201/ADuM6202 are approved by the organizations listed in Tab l e 1 5 . Refer to Tabl e 20 and the Insulation Lifetime
section for more information about the recommended maximum working voltages for specific cross-insulation waveforms and insulation levels.
Table 15.
UL1 CSA VDE2
Recognized under UL 1577 component
recognition program
Single protection, 5000 V rms isolation
voltage
File E214100 File 205078 File 2471900-4880-0001
1
In accordance with UL 1577, each ADuM6200/ADuM6201/ADuM6202 is proof-tested by applying an insulation test voltage ≥ 6000 V rms for 1 sec (current leakage
detection limit = 15 μA).
2
In accordance with IEC 60747-5-2 (VDE 0884 Part 2):2003-01, each ADuM6200/ADuM6201/ADuM6202 is proof-tested by applying an insulation test voltage ≥ 1590 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 approval.
3
In accordance with DIN V VDE V 0884-10, each ADuM6200/ADuM6201/ADuM6202 is proof tested by applying an insulation test voltage of ≥1050 V peak for 1 sec
(partial discharge detection limit = 5 pC). The * marking branded on the component designates DIN V VDE V 0884-10approval.
Approved under CSA Component Acceptance Notice #5A
Basic insulation per CSA 60950-1-07 and IEC 60950-1,
600 V rms (848 V peak) maximum working voltage
RW-16 package: reinforced insulation per CSA 60950-1-07
and IEC 60950-1, 380 V rms (537 V peak) maximum working
voltage, reinforced insulation per IEC 60601-1 125 V rms
(176 V peak) maximum working voltage
(Pending) RI-16-1 package: reinforced insulation per
CSA 60950-1-07 and IEC 60950-1, 400 V rms (565 V peak)
maximum working voltage, reinforced insulation per IEC
60601-1 250 V rms (353 V peak) maximum working voltage
RI-16-1 package: certified
according to DIN V VDE V 0884-10
(VDE V 0884-10):2006-123;
reinforced insulation, 846 V peak
(Pending) RW-16 package:
certified according to IEC 60747-5-2
(VDE 0884 Part 2):2003-01, basic
insulation, 846 V peak
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 16.
Parameter Symbol Value Unit Test Conditions/Comments
Rated Dielectric Insulation Voltage 5000 V rms 1-minute duration
Minimum External Air Gap (Clearance) L (I01) 8.0 mm
Minimum External Tracking (Creepage),
L (I02) 7.6 mm
RW-16 Package
Minimum External Tracking (Creepage),
L (I02) 8.3 min mm
RI-16-1 Package
Minimum Internal Distance (Internal Clearance) 0.017 min mm Distance through insulation
Tracking Resistance (Comparative Tracking Index) CTI >175 V DIN IEC 112/VDE 0303, Part 1
Material Group IIIa Material Group (DIN VDE 0110, 1/89, Table 1)
Measured from input terminals to output terminals,
shortest distance through air
Measured from input terminals to output terminals,
shortest distance path along body
Measured from input terminals to output terminals,
shortest distance path along body
Rev. B | Page 8 of 28
Page 9
Data Sheet ADuM6200/ADuM6201/ADuM6202
IEC 60747-5-2 (VDE 0884 PART 2):2003-01 INSULATION CHARACTERISTICS
These isolators are 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 components designates IEC 60747-5-2 (VDE 0884 Part 2):2003-01 approval.
Table 17.
Description Test Conditions/Comments Symbol Characteristic Unit
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 300 V rms I to IV
For Rated Mains Voltage ≤ 450 V rms I to II
For Rated Mains Voltage ≤ 600 V rms I to II
Climatic Classification 40/105/21
Pollution Degree per DIN VDE 0110, Table 1 2
Maximum Working Insulation Voltage V
Input-to-Output Test Voltage
Method b1
× 1.875 = VPR, 100% production test, tm = 1 sec,
V
IORM
partial discharge < 5 pC
Method a VPR
After Environmental Tests Subgroup 1 V
After Input and/or Safety Test
× 1.6 = VPR, tm = 60 sec, partial discharge < 5 pC 1375 V peak
IORM
× 1.2 = VPR, tm = 60 sec, partial discharge < 5 pC 1018 V peak
V
IORM
Subgroup 2 and Subgroup 3
Highest Allowable Overvoltage Transient overvoltage, tTR = 10 sec V
Safety-Limiting Values
Maximum value allowed in the event of a failure
(see Figure 5)
Case Temperature TS 150 °C
Side 1 Current (I
Insulation Resistance at TS V
) IS1 555 mA
DD1
= 500 V RS >109 Ω
IO
846 V peak
IORM
1590 V peak
V
PR
6000 V peak
IOTM
Thermal Derating Curve
600
500
400
CURRENT (mA)
DD1
300
200
100
SAFE OPERATING V
0
0501001502
Figure 5. Thermal Derating Curve, Dependence of Safety-Limiting Values on Case Temperature, per DIN EN 60747-5-2
AMBIENT TEM P E RATURE (°C)
00
08775-107
RECOMMENDED OPERATING CONDITIONS
Table 18.
Parameter Symbol Min Max Unit Test Conditions/Comments
TEMPERATURE
Operating Temperature TA −40 +105 °C
SUPPLY VOLTAGES Each voltage is relative to its respective ground
V
@ V
DD1
V
DD1
= 0 V V
SEL
@ V
= V
V
SEL
ISO
3.0 5.5 V
DD1
4.5 5.5 V
DD1
Operation at 105°C requires reduction of the
maximum load current as specified in Table 19
Rev. B | Page 9 of 28
Page 10
ADuM6200/ADuM6201/ADuM6202 Data Sheet
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 19.
Parameter Rating
Storage Temperature (TST) −55°C to +150°C
Ambient Operating Temperature (TA) −40°C to +105°C
Supply Voltages (V
Input Voltage (VIA, VIB, VE1, VE2, V
RC
IN
, RC
1, 2
)
SEL
Output Voltage (VOA, VOB)
, V
)1 −0.5 V to +7.0 V
DD1
ISO
−0.5 V to V
,
SEL
+ 0.5 V
DDI
1, 2
−0.5 V to V
DDO
+ 0.5 V
Average Output Current per Pin3 −10 mA to +10 mA
Common-Mode Transients4 −100 kV/μs to +100 kV/μs
1
Each voltage is relative to its respective ground.
2
V
and V
DDI
a given channel, respectively. See the PCB Layout section.
3
See Figure 5 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.
refer to the supply voltages on the input and output sides of
DDO
Table 20. Maximum Continuous Working Voltage
1
Parameter Max Unit Applicable Certification
AC Voltage, Bipolar Waveform 424 V peak All certifications, 50-year operation
AC Voltage, Unipolar Waveform
Basic Insulation 600 V peak
Reinforced Insulation 565 V peak Working voltage per IEC 60950-1
DC Voltage
Basic Insulation 600 V peak
Reinforced Insulation 565 V peak Working voltage per IEC 60950-1
1
Refers to the continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more information.
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.
ESD CAUTION
Rev. B | Page 10 of 28
Page 11
Data Sheet ADuM6200/ADuM6201/ADuM6202
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
GND
RC
GND
V
RC
DD1
V
V
SEL
NC
1
2
1
3
IA
4
IB
5
IN
6
7
8
1
ADuM6200
TOP VIEW
(Not to S cal e)
V
16
ISO
15
GND
ISO
14
V
OA
V
13
OB
NC
12
11
V
SEL
10
V
E2
GND
9
ISO
Table 21. ADuM6200 Pin Function Descriptions
Pin No. Mnemonic Description
1 V
2, 8 GND1
Primary Supply Voltage, 3.0 V to 5.5 V.
DD1
Ground Reference for the Primary Side of the Isolator. 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 VIA Logic Input A.
4 VIB Logic Input B.
5 RCIN
Regulation Control Input. This pin must be connected to the RC
This pin must not be tied high if RC
of the isolator, damaging the ADuM6200 and possibly the devices that it powers.
6 RC
SEL
Control Input. Determines self-regulation mode (RC
regulation. This pin is weakly pulled to the high state. In noisy environments, tie this pin either high or low.
7, 12 NC No Internal Connection.
9, 15 GND
ISO
Ground Reference for the Secondary Side of the Isolator. 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 VE2
Data Enable Input. When this pin is high or not connected, the secondary outputs are active; when this pin is
low, the outputs are in a high-Z state.
11 V
SEL
Output Voltage Selection. When V
In slave regulation mode, this pin has no function.
13 VOB Logic Output B.
14 VOA Logic Output A.
16 V
Secondary Supply Voltage. Output for secondary side isolated data channels and external loads.
ISO
NC = NO CONNECT
Figure 6. ADuM6200 Pin Configuration
is low; this combination causes excessive voltage on the secondary side
SEL
high) or slave mode (RC
SEL
= V
, the V
SEL
ISO
setpoint is 5.0 V. When V
ISO
08775-006
pin of a master isoPower device or tied low.
OUT
low), allowing external
SEL
= GND
SEL
ISO
, the V
setpoint is 3.3 V.
ISO
Rev. B | Page 11 of 28
Page 12
ADuM6200/ADuM6201/ADuM6202 Data Sheet
RC
V
GND
V
RC
V
GND
DD1
V
SEL
1
IA
OB
IN
E1
1
1
2
3
ADuM6201
4
TOP VIEW
(Not to S cal e)
5
6
7
8
V
16
ISO
15
GND
ISO
14
V
OA
V
13
IB
NC
12
11
V
SEL
10
V
E2
GND
9
ISO
Table 22. ADuM6201 Pin Function Descriptions
Pin No. Mnemonic Description
1 V
2, 8 GND1
Primary Supply Voltage, 3.0 V to 5.5 V.
DD1
Ground Reference for the Primary Side of the Isolator. 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 VIA Logic Input A.
4 VOB Logic Output B.
5 RCIN
Regulation Control Input. This pin must be connected to the RC
This pin must not be tied high if RC
of the isolator, damaging the ADuM6201 and possibly the devices that it powers.
6 RC
SEL
Control Input. Determines self-regulation mode (RC
regulation. This pin is weakly pulled to the high state. In noisy environments, tie this pin either high or low.
7 VE1
Data Enable Input. When this pin is high or not connected, the primary output is active; when this pin is low,
the output is in a high-Z state.
9, 15 GND
ISO
Ground Reference for the Secondary Side of the Isolator. 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 VE2
Data Enable Input. When this pin is high or not connected, the secondary output is active; when this pin is low,
the output is in a high-Z state.
11 V
SEL
Output Voltage Selection. When V
In slave regulation mode, this pin has no function.
12 NC No Internal Connection.
13 VIB Logic Input B.
14 VOA Logic Output A.
16 V
Secondary Supply Voltage. Output for secondary side isolated data channels and external loads.
ISO
NC = NO CONNECT
Figure 7. ADuM6201 Pin Configuration
is low; this combination causes excessive voltage on the secondary side
SEL
high) or slave mode (RC
SEL
= V
, the V
SEL
ISO
setpoint is 5.0 V. When V
ISO
08775-007
pin of a master isoPower device or tied low.
OUT
low), allowing external
SEL
= GND
SEL
ISO
, the V
setpoint is 3.3 V.
ISO
Rev. B | Page 12 of 28
Page 13
Data Sheet ADuM6200/ADuM6201/ADuM6202
GND
RC
GND
V
RC
DD1
V
V
SEL
V
1
OA
OB
IN
E1
1
1
2
3
ADuM6202
4
TOP VIEW
(Not to S cale)
5
6
7
8
V
16
ISO
GND
15
ISO
14
V
IA
13
V
IB
NC
12
V
11
SEL
10
NC
GND
9
ISO
Table 23. ADuM6202 Pin Function Descriptions
Pin No. Mnemonic Description
1 V
2, 8 GND1
Primary Supply Voltage, 3.0 V to 5.5 V.
DD1
Ground Reference for the Primary Side of the Isolator. 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 VOA Logic Output A.
4 VOB Logic Output B.
5 RCIN
Regulation Control Input. This pin must be connected to the RC
This pin must not be tied high if RC
of the isolator, damaging the ADuM6202 and possibly the devices that it powers.
6 RC
SEL
Control Input. Determines self-regulation mode (RC
regulation. This pin is weakly pulled to the high state. In noisy environments, tie this pin either high or low.
7 VE1
Data Enable Input. When this pin is high or not connected, the primary outputs are active; when this pin is low,
the outputs are in a high-Z state.
9, 15 GND
ISO
Ground Reference for the Secondary Side of the Isolator. 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, 12 NC No Internal Connection.
11 V
SEL
Output Voltage Selection. When V
In slave regulation mode, this pin has no function.
13 VIB Logic Input B.
14 VIA Logic Input A.
16 V
Secondary Supply Voltage. Output for secondary side isolated data channels and external loads.
ISO
NC = NO CONNECT
Figure 8. ADuM6202 Pin Configuration
is low; this combination causes excessive voltage on the secondary side
SEL
high) or slave mode (RC
SEL
= V
, the V
SEL
ISO
setpoint is 5.0 V. When V
ISO
08775-008
pin of a master isoPower device or tied low.
OUT
low), allowing external
SEL
= GND
SEL
ISO
, the V
setpoint is 3.3 V.
ISO
TRUTH TABLE
Table 24. Power Control Truth Table (Positive Logic)
RC
SEL
Input
RCIN
Input
V
SEL
Input
V
DD1
Input
H X H 5 V 5 V Self-regulation mode, normal operation
H X L 5 V 3.3 V Self-regulation mode, normal operation
H X L 3.3 V 3.3 V Self-regulation mode, normal operation
H X H 3.3 V 5 V This supply configuration is not recommended due to extremely poor efficiency
L H X X X Part runs at maximum open-loop voltage; damage can occur
L L X X 0 V Power supply disabled
L RC
1
V
must be common between all isoPower devices being regulated by a master isoPower part.
DD1
OUT(EXT)
X X1 X
V
1
ISO
Output
Operation
Slave mode; RC
supplied by a master isoPower device
OUT(EXT)
Rev. B | Page 13 of 28
Page 14
ADuM6200/ADuM6201/ADuM6202 Data Sheet
A
R
TYPICAL PERFORMANCE CHARACTERISTICS
35
4.0
4.0
30
25
20
15
EFFICIENCY (%)
10
5
0
5.0V INPUT /5.0V OUTPUT
5.0V INPUT /3.3V OUTPUT
3.3V INPUT /3.3V OUTPUT
0 20406080100120
I
CURRENT (mA)
ISO
Figure 9. Typical Power Supply Efficiency
in All Supported Power Configurations
120
100
80
60
CURRENT (mA)
40
ISO
I
20
0
050100150200250300
5.0V INPUT/5.0V O UTPUT
5.0V INPUT/3.3V O UTPUT
3.3V INPUT/3.3V O UTPUT
I
CURRENT (mA)
DD1
Figure 10. Typical Isolated Output Supply Current vs. Input Current
in All Supported Power Configurations
3.5
3.0
2.5
ENT (A)
2.0
1.5
INPUT CUR
1.0
0.5
0
3.03.54.04.55.05.56.06 .5
08775-124
INPUT SUPPLYVOLTAGE (V)
POWER
I
DD1
3.0
2.0
1.0
3.5
2.5
1.5
0.5
0
POWER (W)
8775-036
Figure 12. Typical Short-Circuit Input Current and Power
Supply Voltage
vs. V
DD1
5.4
5.2
(V)
5.0
ISO
V
4.8
4.6
40
20
(mA)
10% LOAD
ISO
I
0
0
0.51.01.52.02.53.03.54.0
8775-125
Figure 13. Typical V
90% LOAD
10% LOAD
TIME (ms)
Transient Load Response, 5 V Output,
ISO
08775-127
10% to 90% Load Step
1200
1000
800
TION (mW)
600
400
5.0V INPUT /5.0V OUTPUT
TOTAL POWER D ISSIP
200
0
0 20406080100120
5.0V INPUT /3.3V OUTPUT
3.3V INPUT /3.3V OUTPUT
I
CURRENT (mA)
ISO
Figure 11. Typical Total Power Dissipation vs. Isolated Output Supply
Current in All Supported Power Configurations
8775-126
3.7
3.5
(V)
ISO
3.3
V
3.1
60
40
20
(mA)
10% LOAD
ISO
I
0
0
0.51.01.52.02.53.03.54.0
Figure 14. Typical V
90% LOAD
10% LOAD
TIME (ms)
Transient Load Response, 3.3 V Output,
ISO
10% to 90% Load Step
08775-128
Rev. B | Page 14 of 28
Page 15
Data Sheet ADuM6200/ADuM6201/ADuM6202
5.02
5.00
4.98
(V)
4.96
ISO
V
4.94
4.92
4.90
5.0
2.5
RC
SIGNAL (V)
0
00.51.01.52.02.53.03.54.0
TIME (µs)
Figure 15. Typical Output Voltage Ripple at 90% Load, V
ISO
= 5 V
8775-129
5
4
3
(V)
ISO
V
2
1
0
–1.0–0.500.51.01.52.02.53.0
90% LOAD
10% LOAD
Time (ms)
Figure 18. Typical Output Voltage Start-Up Transient
at 10% and 90% Load, V
= 3.3 V
ISO
08775-132
3.34
3.32
3.30
(V)
ISO
V
3.28
3.26
3.24
4
2
RC
SIGNAL (V)
0
00.51.01.52.02.53.03.54.0
TIME (µs)
Figure 16. Typical Output Voltage Ripple at 90% Load, V
7
6
5
4
(V)
ISO
V
3
2
1
90% LOAD
10% LOAD
= 3.3 V
ISO
20
16
12
SUPPLY CURRENT ( mA)
08775-130
Figure 19. Typical I
5.0V INPUT/5.0V O UTPUT
5.0V INPUT/3.3V O UTPUT
3.3V INPUT/3.3V O UTPUT
8
4
0
051015
DATA RATE (Mbps)
Supply Current per Forward Data Channel
CHn
2025
08775-041
(15 pF Output Load)
20
16
12
SUPPLY CURRENT (mA)
5.0V INPUT/5.0V O UTPUT
5.0V INPUT/3.3V O UTPUT
3.3V INPUT/3.3V O UTPUT
8
4
0
–1.0–0.500.51.01.52.02.53.0
TIME (ms)
Figure 17. Typical Output Voltage Start-Up Transient
at 10% and 90% Load, V
ISO
= 5 V
08775-131
Rev. B | Page 15 of 28
0
051015
Figure 20. Typical I
DATA RATE (Mbps)
Supply Current per Reverse Data Channel
CHn
(15 pF Output Load)
2025
08775-042
Page 16
ADuM6200/ADuM6201/ADuM6202 Data Sheet
5
3.0
4
3
5V
2
SUPPLY CURRENT (mA)
1
0
051015
Figure 21. Typical I
ISO(D)
3.3V
DATA RATE (Mbps)
Dynamic Supply Current per Input
2025
08775-043
2.5
2.0
1.5
1.0
SUPPLY CURRENT (mA)
0.5
0
051015
Figure 22. Typical I
5V
3.3V
DATA RATE (Mbps)
Dynamic Supply Current per Output
ISO(D)
2025
08775-044
(15 pF Output Load)
Rev. B | Page 16 of 28
Page 17
Data Sheet ADuM6200/ADuM6201/ADuM6202
TERMINOLOGY
I
DD1(Q)
I
is the minimum operating current drawn at the V
DD1(Q)
pin when there is no external load at V
and the I/O pins are
ISO
DD1
operating below 2 Mbps, requiring no additional dynamic
supply current. I
reflects the minimum current operating
DD1(Q)
condition.
I
DD1(D)
I
is the typical input supply current with all channels
DD1(D)
simultaneously driven at a maximum data rate of 25 Mbps
with full capacitive load representing the maximum dynamic
load conditions. Resistive loads on the outputs should be
treated separately from the dynamic load.
I
I
DD1(MAX)
is the input current under full dynamic and V
DD1(MAX)
ISO
load
conditions.
I
ISO(LOAD)
I
t
The t
the falling edge of the V
edge of the V
is the current available to the load.
ISO(LOAD)
Propagation Delay
PHL
propagation delay is measured from the 50% level of
PHL
signal to the 50% level of the falling
Ix
signal.
Ox
Propagation Delay
t
PLH
The t
propagation delay is measured from the 50% level of
PLH
the rising edge of the V
edge of the V
signal.
Ox
Propagation Delay Skew (t
t
is the magnitude of the worst-case difference in t
PSK
that is measured between units at the same operating
or t
PLH
signal to the 50% level of the rising
Ix
)
PSK
and/
PHL
temperature, supply voltages, and output load within the
recommended operating conditions.
Channel-to-Channel Matching (t
PSKCD/tPSKOD
)
Channel-to-channel matching is the absolute value of the
difference in propagation delays between two channels when
operated with identical loads.
Minimum Pulse Width
The minimum pulse width is the shortest pulse width at which
the specified pulse width distortion is guaranteed.
Maximum Data Rate
The maximum data rate is the fastest data rate at which the
specified pulse width distortion is guaranteed.
Rev. B | Page 17 of 28
Page 18
ADuM6200/ADuM6201/ADuM6202 Data Sheet
APPLICATIONS INFORMATION
The dc-to-dc converter section of the ADuM620x works on
principles that are common to most switching power supplies. It
has a secondary side controller architecture with isolated pulsewidth modulation (PWM) feedback. V
power is supplied to
DD1
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
(V
) side controller regulates the output by creating a PWM
ISO
control signal that is sent to the primary (V
) side by a dedicated
DD1
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 ADuM620x implements undervoltage lockout (UVLO)
with hysteresis on the V
power input. This feature ensures
DD1
that the converter does not enter oscillation due to noisy input
power or slow power-on ramp rates.
The ADuM620x can accept an external regulation control
signal (RC
) that can be connected to other isoPower devices.
IN
This feature allows a single regulator to control multiple power
modules without contention. When accepting control from a
master power module, the V
pins can be connected together,
ISO
adding their power. Because there is only one feedback control
path, the supplies work together seamlessly. The ADuM620x
can only regulate itself or accept regulation (slave device) from
another device in this product line; it cannot provide a
regulation signal to other devices.
PCB LAYOUT
The ADuM620x digital isolators with 0.4 W isoPower integrated
dc-to-dc converter require no external interface circuitry for the
logic interfaces. Power supply bypassing is required at the input
and output supply pins (see Figure 23). Note that low ESR bypass
capacitors are required between Pin 1 and Pin 2 and between
Pin 15 and Pin 16, as close to the chip pads as possible.
The power supply section of the ADuM620x 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
V
, and between Pin 15 and Pin 16 for V
DD1
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 for V
DD1
and V
capacitor must have a low ESR; for example, use of a ceramic
capacitor is advised.
.
ISO
. The smaller
ISO
The total lead length between the ends of the low ESR capacitor
and the input power supply pin must not exceed 2 mm. Installing
the bypass capacitor with traces more than 2 mm in length may
result in data corruption. 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.
BYPASS < 2mm
V
DD1
GND
1
VIA/V
OA
VIB/V
OB
RC
IN
RC
SEL
VE1/NCVE2/NC
GND
1
Figure 23. Recommended PCB Layout
V
ISO
GND
VOA/V
VOB/V
NC
V
SEL
GND
ISO
ISO
IA
IB
08775-020
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 Ta ble 1 9, thereby leading to latch-up and/or
permanent damage.
The ADuM620x is a power device that dissipates approximately
1 W of power when fully loaded and running at maximum speed.
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 23
shows enlarged pads for Pin 8 (GND
) and Pin 9 (GND
1
ISO
).
Multiple vias should be implemented 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 ADuM620x devices do not contain a soft start circuit.
Therefore, the start-up current and voltage behavior must be
taken into account when designing with this device.
When power is applied to V
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 the time
required to reach regulation voltage depends on the load and
the V
With a fast V
up to 100 mA/V of V
slew rate.
DD1
slew rate (200 μs or less), the peak current draws
DD1
DD1
the output can turn on, so the peak current is proportional to
the maximum input voltage.
, the input switching circuit begins
DD1
. The input voltage goes high faster than
Rev. B | Page 18 of 28
Page 19
Data Sheet ADuM6200/ADuM6201/ADuM6202
V
With a slow V
voltage is not changing quickly when V
minimum voltage. The current surge is approximately 300 mA
because V
behavior during startup is similar to when the device load is a
short circuit; these values are consistent with the short-circuit
current shown in Figure 12.
When starting the device for V
the current available to the V
The ADuM620x devices may not be able to drive the output to
the regulation point if a current-limiting device clamps the V
voltage during startup. As a result, the ADuM620x devices can
draw large amounts of current at low voltage for extended
periods of time.
The output voltage of the ADuM620x devices exhibits V
overshoot during startup. If this overshoot could potentially
damage components attached to V
such as a Zener diode can be used to clamp the voltage. Typical
behavior is shown in Figure 17 and Figure 18.
EMI CONSIDERATIONS
The dc-to-dc converter section of the ADuM620x devices must
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 primary and
secondary 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.
PROPAGATION DELAY PARAMETERS
Propagation delay is a parameter that describes the time it takes
a logic signal to propagate through a component. The propagation
delay to a logic low output may differ from the propagation
delay to a logic high output.
INPUT (
IX
OUTPUT (V
Pulse width distortion is the maximum difference between
these two propagation delay values and is an indication of how
accurately the timing of the input signal is preserved.
Channel-to-channel matching refers to the maximum amount
that the propagation delay differs between channels within a
single ADuM620x component.
Propagation delay skew refers to the maximum amount that
the propagation delay differs between multiple ADuM620x
components operating under the same conditions.
slew rate (in the millisecond range), the input
DD1
reaches the UVLO
DD1
is nearly constant at the 2.7 V UVLO voltage. The
DD1
= 5 V operation, do not limit
ISO
power pin to less than 300 mA.
DD1
, a voltage-limiting device
ISO
)
t
PLH
)
OX
Figure 24. Propagation Delay Parameters
t
PHL
50%
50%
ISO
DC CORRECTNESS AND MAGNETIC FIELD
IMMUNITY
Positive and negative logic transitions at the isolator input
cause narrow (~1 ns) pulses to be sent to the decoder via the
transformer. The decoder is bistable and is, therefore, either set
or reset by the pulses, indicating input logic transitions. In the
absence of logic transitions at the input for more than 1 μs, a
periodic set of refresh pulses indicative of the correct input state
is sent to ensure dc correctness at the output. If the decoder
receives no internal pulses for more than approximately 5 μs, the
DD1
08775-118
input side is assumed to be unpowered or nonfunctional, and
the isolator output is forced to a default state by the watchdog
timer circuit.
The limitation on the magnetic field immunity of the ADuM620x
is set by the condition in which induced voltage in the receiving
coil of the transformer is sufficiently large to either falsely set or
reset the decoder. The following analysis defines the conditions
under which this may occur. The 3.3 V operating condition of the
ADuM620x is examined because it represents the most susceptible mode of operation.
The pulses at the transformer output have an amplitude greater
than 1.0 V. The decoder has a sensing threshold at approximately
0.5 V, thus establishing a 0.5 V margin in which induced voltages
can be tolerated. The voltage induced across the receiving coil is
given by
V = (−dβ/dt)
2
∑ πr
; n = 1, 2, … , N
n
where:
β is the magnetic flux density (gauss).
r
is the radius of the nth turn in the receiving coil (cm).
n
N is the total number of turns in the receiving coil.
Given the geometry of the receiving coil in the ADuM620x and
an imposed requirement that the induced voltage be, at most,
50% of the 0.5 V margin at the decoder, a maximum allowable
magnetic field is calculated as shown in Figure 25.
100
10
1
0.1
DENSITY (kgauss)
0.01
MAXIMUM ALLOWABLE MAGNETI C F L UX
0.001
1k10k10M
MAGNETIC FIELD FREQUENCY (Hz)
Figure 25. Maximum Allowable External Magnetic Flux Density
1M
100M100k
08775-119
Rev. B | Page 19 of 28
Page 20
ADuM6200/ADuM6201/ADuM6202 Data Sheet
For example, at a magnetic field frequency of 1 MHz, the
maximum allowable magnetic field of 0.2 kgauss induces a
voltage of 0.25 V at the receiving coil. This voltage is approximately 50% of the sensing threshold and does not cause a faulty
output transition. Similarly, if such an event occurs during a
transmitted pulse (and is of the worst-case polarity), it reduces
the received pulse from >1.0 V to 0.75 V—still well above the
0.5 V sensing threshold of the decoder.
The preceding magnetic flux density values correspond to
specific current magnitudes at given distances from the
ADuM620x transformers. Figure 26 expresses these allowable
current magnitudes as a function of frequency for selected
distances. As shown in Figure 26, the ADuM620x is extremely
immune and can be affected only by extremely large currents
operated at high frequency very close to the component. For the
1 MHz example noted, a 0.5 kA current placed 5 mm away from
the ADuM620x is required to affect the operation of the device.
1000
DISTANCE = 1m
100
10
DISTANCE = 100mm
1
DISTANCE = 5mm
0.1
MAXIMUM ALLOWABLE CURRENT (kA)
0.01
1k10k100M100k1M10M
MAGNETIC FIELD FREQUENCY (Hz)
Figure 26. Maximum Allowable Current
for Various Current-to-ADuM620x Spacings
8775-120
Note that at combinations of strong magnetic field and high
frequency, any loops formed by PCB traces can induce error
voltages sufficiently large to trigger the thresholds of succeeding
circuitry. Exercise care in the layout of such traces to avoid this
possibility.
POWER CONSUMPTION
The V
channels as well as to the power converter. For this reason, the
quiescent currents drawn by the data converter and the primary
and secondary input/output channels cannot be determined
separately. All of these quiescent power demands are combined
into the I
current is the sum of the quiescent operating current, the dynamic
current I
I
ISO
power supply input provides power to the iCoupler data
DD1
current shown in Figure 27. The total I
DD1(Q)
demanded by the I/O channels, and any external
DD1(D)
load.
supply
DD1
I
DD1(Q)
I
DD1(D)
CONVERTER
PRIMARY
I
DDP(D)
PRIMARY
DATA I/O
2-CHANNEL
Figure 27. Power Consumption Within the ADuM620x
Both dynamic input and output current is consumed only
when operating at channel speeds higher than the refresh
rate, f
. Each channel has a dynamic current determined by
r
its data rate. Figure 19 shows the current for a channel in the
forward direction, which means that the input is on the primary
side of the part. Figure 20 shows the current for a channel in the
reverse direction, which means that the input is on the secondary
side of the part. Both figures assume a typical 15 pF load. The
following relationship allows the total I
I
= (I
× V
DD1
ISO
)/(E × V
ISO
where:
is the total supply input current.
I
DD1
I
is the current drawn by the secondary side external loads.
ISO
E is the power supply efficiency at the maximum load from
Figure 9 at the V
I
is the current drawn by a single channel, determined from
CHn
ISO
and V
Figure 19 or Figure 20, depending on channel direction.
Calculate the maximum external load by subtracting the
dynamic output load from the maximum allowable load.
I
ISO(LOAD)
= I
ISO(MAX)
− ∑I
where:
I
is the current available to supply an external secondary
ISO(LOAD)
side load.
I
is the maximum external secondary side load current
ISO(MAX)
available at V
I
is the dynamic load current drawn from V
ISO(D)n
ISO
.
or output channel, as shown in Figure 19 and Figure 20 for a
typical 15 pF load.
This analysis assumes a 15 pF capacitive load on each data output.
If the capacitive load is larger than 15 pF, the additional current
must be included in the analysis of I
To d e te r mi n e I
in Equation 1, additional primary side
DD1
dynamic output current (I
Additional secondary side dynamic output current (I
is added to I
on a per-channel basis.
ISO
E
CONVERTER
SECONDARY
I
ISO(D)
SECONDARY
DATA I/O
2-CHANNEL
current to be calculated:
DD1
) + ∑I
DD1
condition of interest.
DD1
; n = 1 to 4 (2)
ISO(D)n
) is added directly to I
AOD
; n = 1 to 4 (1)
CHn
ISO
and I
DD1
ISO(LOAD)
I
ISO
08775-021
by an input
.
.
DD1
)
AOD
Rev. B | Page 20 of 28
Page 21
Data Sheet ADuM6200/ADuM6201/ADuM6202
To d e te r mi n e I
side output current (I
in Equation 2, additional secondary
ISO(LOAD)
) is subtracted from I
AOD
ISO(MAX)
on a
per-channel basis.
For each output channel with C
greater than 15 pF, the
L
additional capacitive supply current is given by
I
= 0.5 × 10−3 × ((CL − 15) × V
AOD
) × (2f − fr); f > 0.5 fr (3)
ISO
where:
C
is the output load capacitance (pF).
L
is the output supply voltage (V).
V
ISO
f is the input logic signal frequency (MHz); it is half the input
data rate expressed in units of Mbps.
f
is the input channel refresh rate (Mbps).
r
CURRENT LIMIT AND THERMAL OVERLOAD
PROTECTION
The ADuM620x 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 temperature starts to rise above 150°C, the PWM is
turned off, turning off the output current. When the junction
temperature drops 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 V
to ground occurs.
ISO
At first, the ADuM620x reaches its maximum current, which is
proportional to the voltage applied at V
. Power dissipates on
DD1
the primary side of the converter (see Figure 12). If self-heating
of the junction becomes great enough to cause its temperature
to rise above 150°C, thermal shutdown is activated, turning off
the PWM and turning off the output current. As the junction
temperature cools and drops 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 ADuM6200/ADuM6201/ADuM6202 power input, data
input channels on the primary side, and data input channels on
the secondary side are all protected from premature operation
by undervoltage lockout (UVLO) circuitry. Below the minimum
operating voltage, the power converter holds its oscillator inactive,
and all input channel drivers and refresh circuits are idle. Outputs
remain in a high impedance state to prevent transmission of
undefined states during power-up and power-down operations.
During application of power to V
, the primary side circuitry
DD1
is held idle until the UVLO preset voltage is reached. At that
time, the data channels initialize to their default low output
state until they receive data pulses from the secondary side.
When the primary side is above the UVLO threshold, the data
input channels sample their inputs and begin sending encoded
pulses to the inactive secondary output channels. The outputs
on the primary side remain in their default low state because no
data comes from the secondary side inputs until secondary side
power is established. The primary side oscillator also begins to
operate, transferring power to the secondary power circuits.
The secondary V
voltage is below its UVLO limit at this point;
ISO
the regulation control signal from the secondary side is not being
generated. The primary side power oscillator is allowed to free
run under these conditions, 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 V
. When the
DD1
regulation point is reached, the regulation control circuit produces the regulation control signal that modulates the oscillator
on the primary side. The V
current is then reduced and is
DD1
proportional to the load current. The inrush current is less than
the short-circuit current shown in Figure 12. The duration of
the inrush current depends on the V
on the current and voltage available at the V
loading conditions and
ISO
pin.
DD1
As the secondary side converter begins to accept power from
the primary, the V
voltage starts to rise. When the secondary
ISO
side UVLO is reached, the secondary side outputs are initialized
to their default low state until data is received from the corresponding primary side input. It can take up to 1 μs after the
secondary side is initialized for the state of the output to
correlate to the primary side input.
Secondary side inputs sample their state and transmit it to the
primary side. Outputs are valid about 1 μs after the secondary
side becomes active.
Because the rate of charge of the secondary side power supply is
dependent on loading conditions, the input voltage, and the output
voltage level selected, take care that the design allows the converter sufficient time to stabilize before valid data is required.
When power is removed from V
, the primary side converter
DD1
and coupler shut down when the UVLO level is reached. The
secondary side stops receiving power and starts to discharge.
The outputs on the secondary side hold the last state that they
received from the primary side. Either the UVLO level is reached
and the outputs are placed in their high impedance state, or the
outputs detect a lack of activity from the primary side inputs
and the outputs are set to their default low value before the
secondary power reaches UVLO.
Rev. B | Page 21 of 28
Page 22
ADuM6200/ADuM6201/ADuM6202 Data Sheet
THERMAL ANALYSIS
The ADuM620x devices consist of four internal silicon die
attached to a split lead frame with two die attach paddles. For
the purposes of thermal analysis, the device is treated as a thermal
unit with the highest junction temperature reflected in the θ
value from Tabl e 14 . The value of θ
is based on measurements
JA
JA
taken with the part mounted on a JEDEC standard 4-layer board
with fine width traces and still air. Under normal operating
conditions, the ADuM620x 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.
INCREASING AVAILABLE POWER
The ADuM620x devices are designed to work in combination
with the ADuM6000 in a master/slave configuration. The RC
and RC
from an ADuM6000 through its RC
that control signal. The RC
pins allow the ADuM620x to receive a PWM signal
SEL
pin and to act as a slave to
IN
pin chooses whether the part acts
SEL
as a standalone, self-regulated device or as a slave device.
IN
When the ADuM620x acts as a slave, its power is regulated by a
PWM signal from a master device. This allows multiple isoPower
parts to be combined in parallel while sharing the load equally.
When the ADuM620x is configured as a standalone unit, it
generates its own PWM feedback signal to regulate itself.
The ADuM620x devices can function as slave or standalone
devices. 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
Tabl e 2 5 ).
Table 25. Function of isoPower Parts
Functio n
Part No.
ADuM6000 Yes Ye s Yes
ADuM620x No Yes Yes
ADuM640x No No Yes
ADuM5000 Yes Ye s Yes
ADuM520x No Yes Yes
ADuM5400 No No Yes
ADuM5401 to
ADuM5404
Master Slave Standalone
Yes N o Ye s
Tabl e 2 6 illustrates how isoPower devices can provide many
combinations of data channel count and multiples of the singleunit power.
Table 26. Configurations for Power and Data Channels
Power Units
1-Unit Power
2-Unit Power
3-Unit Power
0 Channels 2 Channels 4 Channels
ADuM6000 or ADuM5000 (standalone) ADuM620x or ADuM520x (standalone)
ADuM6000 or ADuM5000 (master)
ADuM6000 or ADuM5000 (slave)
ADuM6000 or ADuM5000 (slave)
ADuM6000 or ADuM5000 (master) ADuM6000 or ADuM5000 (master) ADuM6000 or ADuM5000 (master)
ADuM6000 or ADuM5000 (slave) ADuM6000 or ADuM5000 (slave) ADuM620x or ADuM520x (slave)
ADuM6000 or ADuM5000 (slave) ADuM620x or ADuM520x (slave) ADuM620x or ADuM520x (slave)
Number of Data Channels
ADuM6000 or ADuM5000 (master)
ADuM620x or ADuM520x (slave)
ADuM5401, ADuM5402, ADuM5403,
ADuM5404, or ADuM640x (standalone)
ADuM5401, ADuM5402, ADuM5403,
ADuM5404 (master)
Rev. B | Page 22 of 28
Page 23
Data Sheet ADuM6200/ADuM6201/ADuM6202
INSULATION LIFETIME
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of insulation 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 lifetime of the insulation structure within the ADuM620x devices.
Analog Devices performs accelerated life testing using voltage
levels higher than the rated continuous working voltage. Acceleration 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 Tab l e 2 0 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
the 50-year service life voltage. Operation at these high working
voltages can lead to shortened insulation life in some cases.
The insulation lifetime of the ADuM620x devices depends on
the voltage waveform type 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 28, Figure 29, and Figure 30 illustrate these
different isolation voltage waveforms.
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the bipolar ac condition
determines the maximum working voltage recommended by
Analog Devices.
In the case of unipolar ac or dc voltage, the stress on the insulation is significantly lower. This allows operation at higher
working voltages while still achieving a 50-year service life.
The working voltages listed in Tab l e 20 can be applied while
maintaining the 50-year minimum lifetime, provided that the
voltage conforms to either the unipolar ac or dc voltage cases.
Any cross-insulation voltage waveform that does not conform
to Figure 29 or Figure 30 should be treated as a bipolar ac waveform and its peak voltage limited to the 50-year lifetime voltage
value listed in Table 2 0. The voltage presented in Figure 29 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.
RATED PEAK VOL TAGE
0V
Figure 28. Bipolar AC Waveform
RATED PEAK VOL TAGE
0V
Figure 29. Unipolar AC Waveform
RATED PEAK VOL TAGE
0V
Figure 30. DC Waveform
08775-121
08775-122
08775-123
Rev. B | Page 23 of 28
Page 24
ADuM6200/ADuM6201/ADuM6202 Data Sheet
C
OUTLINE DIMENSIONS
10.50 (0.4134)
10.10 (0.3976)
BSC
9
7.60 (0.2992)
7.40 (0.2913)
8
10.65 (0.4193)
10.00 (0.3937)
2.65 (0.1043)
2.35 (0.0925)
SEATING
PLANE
8°
0°
0.33 (0.0130)
0.20 (0.0079)
0
0
.
7
5
.
2
(
0
(
5
0
)
.
0
2
9
5
9
8
)
.
0
0
1.27 (0.0500)
0.40 (0.0157)
45°
03-27-2007-B
0.30 (0.0118)
0.10 (0.0039)
OPLANARITY
0.10
16
1
1.27 (0.0500)
0.51 (0.0201)
0.31 (0.0122)
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
COMPLIANT TO JEDEC STANDARDS MS-013-AA
Figure 31. 16-Lead Standard Small Outline Package [SOIC_W]
Wide Body (RW-16)
Dimensions shown in millimeters and (inches)
13.00 (0.5118)
12.60 (0.4961)
16
1
9
8
7.60 (0.2992)
7.40 (0.2913)
10.65 (0.4193)
10.00 (0.3937)
0
.
(
7
5
0
.
0
2
9
5
)
2.65 (0.1043)
0.30 (0.0118)
0.10 (0.0039)
COPLANARITY
0.10
1.27
(0.0500)
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
0.51 (0.0201)
0.31 (0.0122)
BSC
COMPLIANT TO JEDEC STANDARDS MS-013-AC
2.35 (0.0925)
SEATING
PLANE
8°
0°
0.33 (0.0130)
0.20 (0.0079)
Figure 32. 16-Lead Standard Small Outline Package, with Increased Creepage [SOIC_IC]