Datasheet ADUM5000 Datasheet (ANALOG DEVICES)

2.5 kV, Isolated DC-to-DC Converter

Data Sheet

FEATURES

isoPower integrated, isolated dc-to-dc converter
Regulated 3.3 V or 5 V output
Up to 500 mW output power
16-lead SOIC package with 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)

V

= 560 V peak

IORM

APPLICATIONS

RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation
Power supply startups and gate drives
Isolated sensor interfaces
Industrial PLCs

GENERAL DESCRIPTION

The ADuM50001 is an isolated dc-to-dc converter based on
the Analog Devices, Inc., iCoupler® technology. The dc-to-dc
converter in this device provides regulated, isolated power in
several combinations of input and output voltages as listed in
Tabl e 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 ADuM5000
to augment the power output of ADuM5401, ADuM5402,

ADuM5403, ADuM5404, ADuM520x, and other ADuM5000

iCouplers with isoPower®.

1

Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329.

ADuM5000

FUNCTIONAL BLOCK DIAGRAM

1

OSC

2

3

4

5

6

7

8

RECT REG

ADuM5000

RC

RC

V

GND

RC

V

GND

DD1

1

NC

IN

OUT

SEL

DD1

1

Figure 1.

isoPower uses high frequency switching elements to transfer power
through its transformer. Special care must be taken during printed
circuit board (PCB) layout to meet emissions standards. See the

AN-0971 Application Note for board layout recommendations.

Table 1.

Input Voltage (V) Output Voltage (V) Output Power (mW)

5 5 500
5 3.3 330

3.3 3.3 200

16

V

ISO

GND

15

ISO

14

NC

13

V

SEL

12

NC

11

NC

10

V

ISO

9

GND

ISO

07539-001

Rev. B

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] ©2008–2012 Analog Devices, Inc. All rights reserved.

ADuM5000 Data Sheet

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

REVISION HISTORY

5/12—Rev. A to Rev. B

Created Hyperlink for Safety and Regulatory Approvals

Entry in Features Section ................................................................. 1

11/10—Rev. 0 to Rev. A

Changes to Product Title and Features Section ............................ 1

Changes to Table 6, Minimum External Air Gap (Clearance)
Parameter, Table 7, and Minimum External Tracking

(Creepage) Parameter, Table 7 ........................................................ 5

Changed DIN V VDE V 0884-10 (VDE V 0884-10 Insulation
Characteristics Section to IEC 60747-5-2 (VDE 0884,

Part 2):2003-1 Insulation Characteristics and Table Summary .... 6

Changes to Table 9 ............................................................................ 6

Changes to Table 10 and Table 11 ................................................... 7

Changes to Pin 10, Pin 16 Description in Table 1 2 ;

Changes to Table 1 3 .......................................................................... 8

Changes to Figure 6 Caption and Figure 9 Caption ..................... 9

Added Figure 12 and Figure 13; Renumbered Sequentially ..... 10

Added Start-Up Behavior Section ................................................ 11

Changes to EMI Considerations Section and Current Limit

and Thermal Overload Protection Section ................................. 12

Changes to Increasing Available Power Section ......................... 12

Changes to Table 14 and Table 15 ................................................ 13

10/08—Revision 0: Initial Version

Rev. B | Page 2 of 16

Data Sheet ADuM5000

Parameter

Symbol

Min

Typ

Max

Unit

Test Conditions

ISO

ISO

ISO(LINE)

ISO

DD1

ISO(LOAD)

ISO

ISO

ISO(N)

ISO

Switching Frequency

f

OSC

180 MHz

PWM

DD1

ISO

DD1(M AX)

ISO

ISO(MAX)

ISO

DD1

ISO

DD1(Q)

ISO

UV+

UV−

Hysteresis

V

UVH

0.3 V

ISO

ISO

ISO(LINE)

ISO

DD1

ISO(LOAD)

ISO

ISO

ISO(N)

ISO

OSC

PWM

DD1

ISO

DD1(M AX)

ISO

ISO(MAX)

ISO

DD1

ISO

DD1(Q)

ISO

Positive Going Threshold

V

UV+

2.7 V

UV−

UVH

SPECIFICATIONS

ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/5 V SECONDARY ISOLATED SUPPLY

4.5 V ≤ V
entire recommended operating range, unless otherwise noted. All typical specifications are at T
V

= V

SEL

Table 2.

DC-TO-DC CONVERTER POWER SUPPLY

Setpoint V
Line Regulation V
Load Regulation V
Output Ripple V

Output Noise V

≤ 5.5 V, V

DD1

.

ISO

SEL

= V

; each voltage is relative to its respective ground. All minimum/maximum specifications apply over the

ISO

= 25°C, V

A

4.7 5.0 5.4 V I
1 mV/V I

1 5 % I

75 mV p-p 20 MHz bandwidth, CBO = 0.1 µF||10 µF,

ISO(RIP)

= 0 mA
= 50 mA, V
= 10 mA to 90 mA

= 90 mA

I

200 mV p-p CBO = 0.1 μF||10 μF, I

= 5.0 V, V

DD1

= 4.5 V to 5.5 V

= 90 mA

= 5.0 V, and

ISO

PWM Frequency f
I

Supply Current, Full V

Load I
Maximum Output Supply Current I
Efficiency at Maximum Output

625 kHz

290 mA I

100 mA V

34 % I

= 100 mA

> 4.5 V

= 100 mA

ISO

Supply Current

I

Supply Current, No V

Undervoltage Lockout, V

Load I

and V

DD1

ISO

4 15 mA I

= 0 mA

Supply
Positive Going Threshold V
Negative Going Threshold V

2.7 V

2.4 V

ELECTRICAL CHARACTERISTICS—3.3 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY

3.0 V ≤ V
the entire recommended operating range, unless otherwise noted. All typical specifications are at T
and V

Table 3.

Parameter Symbol Min Typ Max Unit Test Conditions

DC-TO-DC CONVERTER POWER SUPPLY

Setpoint V
Line Regulation V
Load Regulation V
Output Ripple V

Output Noise V
Switching Frequency f
PWM Frequency f
I

I
Undervoltage Lockout, V

≤ 3.6 V, V

DD1

= GND

SEL

ISO

Supply Current, Full V

= GND

SEL

; each voltage is relative to its respective ground. All minimum/maximum specifications apply over

ISO

.

Load I
Maximum Output Supply Current I
Efficiency at Maximum Output

Supply Current

Supply Current, No V

Load I

and V

DD1

ISO

Supply

= 25°C, V

A

3.0 3.3 3.6 V I
1 mV/V I

1 5 % I

50 mV p-p 20 MHz bandwidth, CBO = 0.1 μF||10 μF,

ISO(RIP)

= 0 mA
= 30 mA, V
= 6 mA to 54 mA

I

= 54 mA

130 mV p-p CBO = 0.1 μF||10 μF, I

= 3.3 V, V

DD1

= 3.0 V to 3.6 V

= 54 mA

180 MHz

625 kHz

175 mA I

60 mA V

35 % I

3 12 mA I

= 60 mA

> 3.0 V

= 60 mA

ISO

= 0 mA

= 3.3 V,

ISO

Negative Going Threshold V
Hysteresis V

2.4 V

0.3 V

Rev. B | Page 3 of 16

ADuM5000 Data Sheet

ISO

ISO

ISO(LINE)

ISO

DD1

ISO(LOAD)

ISO

ISO

ISO(N)

ISO

OSC

PWM Frequency

f

PWM

625 kHz

DD1

ISO

DD1(M AX)

ISO

ISO(MAX)

ISO

DD1

ISO

DD1(Q)

ISO

UV+

UV−

UVH

ELECTRICAL CHARACTERISTICS—5 V PRIMARY INPUT SUPPLY/3.3 V SECONDARY ISOLATED SUPPLY

4.5 V ≤ V
the entire recommended operating range, unless otherwise noted. All typical specifications are at T
and V

Table 4.

Parameter Symbol Min Typ Max Unit Test Conditions

DC-TO-DC CONVERTER POWER SUPPLY

Setpoint V
Line Regulation V
Load Regulation V
Output Ripple V

Output Noise V
Switching Frequency f

I

I
Undervoltage Lockout, V

≤ 5.5 V, V

DD1

= GND

SEL

ISO

Supply Current, Full V

= GND

SEL

, each voltage is relative to its respective ground. All minimum/maximum specifications apply over

ISO

.

Load I
Maximum Output Supply Current I
Efficiency at Maximum Output

Supply Current

Supply Current, No V

Load I

and V

DD1

ISO

Supply
Positive Going Threshold V
Negative Going Threshold V
Hysteresis V

= 25°C, V

A

3.0 3.3 3.6 V I
1 mV/V I

1 5 % I

50 mV p-p 20 MHz bandwidth, CBO = 0.1 μF||10 μF,

ISO(RIP)

= 0 mA
= 50 mA, V
= 10 mA to 100 mA

= 90 mA

I

130 mV p-p CBO = 0.1 μF||10 μF, I

= 5.0 V, V

DD1

= 4.5 V to 5.5 V

= 90 mA

180 MHz

250 mA I

100 mA V

28 % I

3 12 mA I

= 100 mA

> 3.0 V

= 100 mA

ISO

= 0 mA

2.7 V

2.4 V

0.3 V

= 3.3 V,

ISO

Rev. B | Page 4 of 16

Data Sheet ADuM5000

RESISTANCE AND CAPACITANCE

I-O

1

I-O

SD-HYS

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)

PACKAGE CHARACTERISTICS

Table 5.

Parameter Symbol Min Typ Max Unit Test Conditions

Resistance (Input-to-Output)1 R
Capacitance (Input-to-Output)

1012 Ω

C

2.2 pF f = 1 MHz
Input Capacitance2 CI 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 traces

THERMAL SHUTDOWN

Thermal Shutdown Threshold TSSD 150 °C TJ rising
Thermal Shutdown Hysteresis TS

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.

20 °C

REGULATORY INFORMATION

The ADuM5000 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 program

1

Single protection, 2500 V rms isolation

voltage

Approved under CSA Component Acceptance
Notice #5A

Testi n g 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

File E214100 File 205078 File 2471900-4880-0001

1

In accordance with UL 1577, each ADuM5000 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 ADuM5000 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.

Certified according to IEC 60747-5-2 (VDE 0884,
Part 2):2003-012

Basic insulation, 560 V peak

3

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,

Minimum External Tracking (Creepage) L(I02) 7.6 mm Measured from input terminals to output terminals,

Minimum Internal Distance (Internal Clearance) 0.017

shortest distance through air

shortest distance path along body

mm Distance through the insulation

min

Rev. B | Page 5 of 16

ADuM5000 Data Sheet

IORM

IORM

DD1

0

100

200

300

400

500

600

0 50 100 150 200

AMBIENT TEM P E RATURE (°C)

SAFE OPERATING V

DD1

CURRENT (mA)

07539-002

SUPPLY VOLTAGES2

Each voltage is relative to its respective ground

DD1

SEL

DD1

DD1

SEL

DD1

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
Input-to-Output Test Voltage

Method b1 V

× 1.875 = VPR, 100% production test, tm = 1 sec,

IORM

partial discharge < 5 pC

Method a V

× 1.6 = VPR, tm = 60 sec, partial discharge < 5 pC VPR
After Environmental Tests Subgroup 1 896 V peak
After Input and/or Safety Test

V

× 1.2 = VPR, tm = 60 sec, partial discharge < 5 pC 672 V peak

IORM

Subgroup 2 and Subgroup 3
Highest Allowable Overvoltage Transient overvoltage, tTR = 10 sec VTR 4000 V peak
Safety-Limiting Values Maximum value allowed in the event of a failure

(see Figure 2)
Case Temperature TS 150 °C
Side 1 I

Current IS1 555 mA

Insulation Resistance at TS VIO = 500 V RS >109 Ω

560 V peak

VPR 1050 V peak

Thermal Derating Curve

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

TEMPERATURE1

Operating Temperature TA −40 +105 °C

V

at V

= 0 V V

V

at V

= 5 V 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.

2.7 5.5 V

4.5 5.5 V

Rev. B | Page 6 of 16

Data Sheet ADuM5000

DDx

ISO

SEL

SEL

DDI

OUT

DDO

I

ISO

100 mA

Bipolar Waveform

424

V peak

50-year minimum

ABSOLUTE MAXIMUM RATINGS

Ambient temperature = 25°C, unless otherwise noted.

Table 10.

Parameter Rating

Storage Temperature (TST) −55°C to +150°C
Ambient Operating Temperature (TA) −40°C to +105°C
Supply Voltages (V
Input Voltage (RC
Output Voltage (RC

, V

)1 −0.5 V to +7.0 V

, RCIN, V

1, 2

)

1, 2

)

−0.5 V to V

−0.5 V to V

+ 0.5 V

+ 0.5 V

Average Total Output Current3

Common-Mode Transients4 −100 kV/µs to +100 kV/µs

1

Each voltage is relative to its respective ground.

2

V

and V

DDI

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.

refer to the supply voltages on the input and output sides of a

DDO

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 Voltage

Parameter Max Unit Reference Standard

AC Voltage

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

1

Rev. B | Page 7 of 16

ADuM5000 Data Sheet

V

DD1

1

GND

1

2

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

NC = NO CONNECT

11

V

DD1

7

V

ISO

10

GND

1

8

GND

ISO

9

ADuM5000

TOP VIEW

(Not to S cale)

07539-003

6

RC

Control Input. Sets either self-regulation/master mode (RC

high) or slave mode (RC

low). This pin is weakly

H X PWM2

H

5.0 V

5.0 V

Master mode operation, self regulating.

OUT(EX T)

OUT(EXT )

iso

iso

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

Figure 3. Pin Configuration

Table 12. Pin Function Descriptions

Pin No. Mnemonic Description

1, 7 V

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-

DD1

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 (RC

master isoPower device, or tied low to disable the converter. In master/standalone mode (RC

= low), this pin is connected to the RC

SEL

pin of a

OUT

= high), this pin

SEL

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 RC

is low; this combination causes excessive voltage

SEL

on the secondary side of the converter, damaging the ADuM5000 and possibly the devices that it powers.
5 RC

Regulation Control Output. In master power configuration, this pin is connected to the RCIN pin of a slave

OUT

isoPower device to allow the ADuM5000 to regulate additional devices.

SEL

SEL

SEL

pulled to the high state. In noisy environments, tie this pin either high or low.
9, 15 GND

Ground Reference for the Secondary Side of the Converter. Pin 9 and Pin 15 are internally connected to each

ISO

other, and it is recommended that both pins be connected to a common ground.
10, 16 V

Secondary Supply Voltage Output for External Loads, 3.3 V (V

ISO

low) or 5.0 V (V

SEL

high). 5.0 V output functionality

SEL

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 V

Output Voltage Selection. When V

SEL

SEL

= V

ISO

, the V

setpoint is 5.0 V. When V

ISO

= GND

SEL

, the V

ISO

setpoint is 3.3 V.

ISO

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

RC

SEL

Input

RCIN
Input

RC

OUT

Output

V

SEL

Input

V
Input

H X PWM2 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

RCIN X X3 X
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 RC

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 RC

3

V

DD1

must be common between all isoPower devices being regulated by a master isoPower part.

V

DD1

ISO

Output

Operation

Slave mode, RC

supplied by a master

Power device.

is prohibited. Damage occurs

SEL

on the secondary side of the converter due to excess output voltage at
V

. RCIN must be low, or it must be connected to a PWM signal from a

ISO

master

Power part.

Rev. B | Page 8 of 16

.

SEL

Data Sheet ADuM5000

0

5

10

15

20

25

30

35

40

0 0.02 0.04 0.06 0.08 0.10

OUTPUT CURRE NT (A)

EFFICIENCY (%)

3.3V IN/3.3V OUT
5V IN/3.3V OUT

5V IN/5V O UT

07539-004

07539-005

0.12

0.10

0.08

0.06

0.04

0.02

0

0 0.05 0.10 0.15 0.20 0.25 0.30

INPUT CURR

ENT (A)

OUTPUT CURRENT (A)

3.3V IN/3.3V OUT
5V IN/3.3V OUT

5V IN/5V O UT

07539-122

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0

0 0.02 0.04 0.06 0.08 0.10

I

ISO

(A)

POWER DISSIPATION (W)

3.3V IN/3.3V OUT
5V IN/3.3V OUT

5V IN/5V O UT

07539-006

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 POWE R DISSIPATION (W)

POWER

I

DD

07539-007

(100µs/DIV)

OUTPUT VOLTAGE

(500mV/DIV)

DYNAMIC LO AD

10% LOAD

90% LOAD

07539-008

(100µs/DIV)

OUTPUT VOLTAGE

(500mV/DIV)

DYNAMIC LO AD

10% LOAD

90% LOAD

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 4. Typical Power Supply Efficiency in All Supported Power

Configurations

Figure 5. Typical Isolated Output Supply Current vs. External Load

in All Supported Power Configurations

Figure 7. Typical Short-Circuit Input Current and Power

vs. V

Supply Voltage

DD1

Figure 8. Typical V

Transient Load Response, 5 V Output,

ISO

10% to 90% Load Step

Figure 6. Typical Total Power Dissipation vs. Isolated Output Supply Current

in All Supported Power Configurations

Figure 9. Typical V

Transient Load Response, 3 V Output,

ISO

10% to 90% Load Step

Rev. B | Page 9 of 16

ADuM5000 Data Sheet

07539-009

TIME (µs)

RIPPLE, V

ISO

= 5V (mV)

–40

–50

–60

–70

–80

–90

–100

0 0.5 1.0 1.5 2.0 2.5 3.0

3.5 4.0

BW = 20MHz

07539-010

TIME (µs)

RIPPLE, V

ISO

= 3.3V (mV)

–20

–30

–40

–50

–60

–70

–80

0 0.5 1.0 1.5 2.0 2.5 3.0 3.5

4.0

BW = 20MHz

07539-012

TIME (ms)

V

ISO

(V)

7

6

5

4

3

2

1

0

–1 0 1 2 3

90% LOAD

10% LOAD

07539-013

TIME (ms)

V

ISO

(V)

5

4

3

2

1

0

–1.0 –0.5 0 0.5 1.0 1.5 2.0 2.5 3.0

90% LOAD

10% LOAD

Figure 10. Typical Output Voltage Ripple at 90% Load, V

Figure 11. Typical Output Voltage Ripple at 90% Load, V

ISO

= 3.3 V

ISO

= 5 V

Figure 12. Typical Output Voltage Start-Up Transient

at 10% and 90% Load, V

ISO

= 5 V

Figure 13. Typical Output Voltage Start-Up Transient

at 10% and 90% Load, V

= 3.3 V

ISO

Rev. B | Page 10 of 16

Data Sheet ADuM5000

APPLICATIONS INFORMATION

The dc-to-dc converter section of the ADuM5000 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

)

ISO

side controller regulates the output by creating a PWM 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 ADuM5000 provides a regulation control output (RC

OUT

)

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 V

ISO

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 ADuM5000 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
V

input protection circuit. When the input voltage rises above

DD1

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 ADuM5000 demands current. It also prevents any
voltage drop due to converter current from turning the supply
off and possibly oscillating.

PCB LAYOUT

The ADuM5000 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 ADuM5000 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

ISO

.

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.

RC

RC

V

DD1

GND

RC

OUT

V

DD1

GND

SEL

1

NC

IN

1

Figure 14. Recommended PCB Layout

NC

NC
NC

V

ISO

GND

V

SEL

V

ISO

GND

ISO

ISO

07539-011

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 ADuM5000 is a power device that dissipates approximately
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
(GND

) and for Pin 9 and Pin 15 (GND

1

). Implement multiple

ISO

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 ADuM5000 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 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 time this
takes depends on the load and the V

, the input switching circuit begins

DD1

slew rate.

DD1

Rev. B | Page 11 of 16

ADuM5000 Data Sheet

With a fast V
draws up to 100 mA/V of V
faster than the output can turn on; therefore, the peak current
is proportional to the maximum input voltage.

With a slow V
voltage does not change quickly when V
current surge is about 300 mA because V
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 con­sistent with the short-circuit current shown in Figure 7.

When starting the device for V
the current available to the V
The ADuM5000 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 ADuM5000 can draw
large amounts of current at low voltage for extended periods.

The output voltage of the ADuM5000 device exhibits V
shoot during startup. If this could potentially damage components
attached to V
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 ADuM5000
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 ADuM5000 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 θ

is based on measurements taken with the part mounted

of θ

JA

on a JEDEC standard 4-layer board with fine width traces and
still air. Under normal operating conditions, the ADuM5000
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.

slew rate (200 μs or less), the peak current

DD1

. The input voltage goes high

DD1

slew rate (in the millisecond range), the input

DD1

reaches UVLO. The

DD1

is nearly constant at

DD1

= 5 V operation, do not limit

ISO

power pin to less than 300 mA.

DD1

ISO

, then a voltage-limiting device, such as a Zener

ISO

from Table 5. The value

JA

DD1

over-

CURRENT LIMIT AND THERMAL OVERLOAD PROTECTION

The ADuM5000 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, 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 V

to ground occurs.

ISO

At first, the ADuM5000 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 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 ADuM5000 converter primary side is protected from pre­mature 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 V
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 V

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 proportional

DD1

to the load current. The inrush current is less than the short­circuit current shown in Figure 7. The duration of the inrush
depends on the V
voltage available at the V

loading conditions and on the current and

ISO

pin.

DD1

voltage

ISO

. When the

Rev. B | Page 12 of 16

Data Sheet ADuM5000

INCREASING AVAILABLE POWER

The ADuM5000 device is designed to work in combination with
other compatible isoPower devices. The RC
pins allow the ADuM5000 to provide its PWM signal to another
device through the RC

pin acting as a master. It can also

OUT

receive a PWM signal from another device through its RC
and act as a slave to that control signal. The RC
whether the part acts as a master or slave device.

When the ADuM5000 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
ADuM5000 is configured as a master or standalone unit, it
generates its own PWM feedback signal to regulate itself and
slave devices.

The ADuM5000 can function as a master, slave, or standalone
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.

, RCIN, and RC

OUT

pin chooses

SEL

IN

SEL

pin

Table 14. Allowed Combinations of isoPower Parts

Functio n

Part No.

Master Slave Standalone

ADuM6000 Yes Ye s Ye s
ADuM620x N o Yes Yes
ADuM640x No No Yes
ADuM5000 Yes Ye s Ye s
ADuM520x N o Yes Yes
ADuM5400 No No Yes
ADuM5401 to

Yes N o Yes

ADuM5404

Another feature allowed by the RC

and RCIN control architecture

SEL

is the ability to completely shut down the oscillator in the dc-to­dc converter. This places the part in a low power standby mode
and reduces the current draw to a fraction of a milliamp.

When the ADuM5000 is placed in slave mode by driving RC
low, the oscillator is controlled by RC

. If RCIN is held low, the

IN

SEL

oscillator is shut down and the part is in low power standby
mode. With no oscillator driving power to the secondary side,
V

turns off. This mode is useful for applications where an

ISO

isolated subsystem may be shut down to conserve power. To
reactivate the power module, drive RC

high; the power supply

SEL

resumes operation.

Table 15. Configurations for Power and Data Channels

Power Units
1-Unit Power

2-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)

3-Unit Power

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 13 of 16

ADuM5000 Data Sheet

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 ADuM5000.

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 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 work­ing voltages can lead to shortened insulation life in some cases.

The insulation lifetime of the ADuM5000 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 insula­tion 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 insu­lation 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.

RATED PEAK VOL TAGE

0V

Figure 15. Bipolar AC Waveform

07539-021

RATED PEAK VOL TAGE

0V

Figure 16. Unipolar AC Waveform

07539-022

RATED PEAK VOL TAGE

0V

Figure 17. DC Waveform

07539-023

Rev. B | Page 14 of 16

Data Sheet ADuM5000

CONTROLLING DIMENSIO

NS ARE IN MILLIMETERS; INCH DIMENSIONS

(IN PARENT

HESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FO

R

REFERENCE ONLYAND ARE NOT APPROPRIATE FOR USE IN D

ESIGN.

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

1, 2

OUTLINE DIMENSIONS

Figure 18. 16-Lead Standard Small Outline Package [SOIC_W]

Wide Body

(RW-16)

Dimensions shown in millimeters and (inches)

ORDERING GUIDE

Model

ADuM5000ARWZ −40°C to +105°C 16-Lead SOIC_W RW-16

1

Z = RoHS Compliant Part.

2

Tape and reel are available. The additional -RL suffix designates a 13-inch (1,000 units) tape and reel option.

Temperature Range Package Description Package Option

Rev. B | Page 15 of 16

ADuM5000 Data Sheet

©2008–2012 Analog Devices, Inc. All rights reserved. Trademarks and

NOTES

registered trademarks are the property of their respective owners.
D07539-0-5/12(B)

Rev. B | Page 16 of 16