ADUM5400 [ADI]
Isolated DC/DC Converter; 隔离式DC / DC转换器
| 型号： | ADUM5400 |
| 厂家： | 
ADI |
| 描述： | Isolated DC/DC Converter |
| 文件： | 总15页 (文件大小：369K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Isolated DC/DC Converter
ADuM5000
Preliminary Technical Data
FEATURES
isoPower™ integrated isolated DC/DC converter
FUNCTIONAL BLOCK DIAGRAM
Regulated 3.3V or 5V output
500mW output power
SOIC 16-lead package with > 8mm creepage
High temperature operation: 105°C
High common-mode transient immunity: > 25 kV/μs
Thermal Overload Protection
Safety and regulatory approvals (pending)
UL recognition
2500 V rms for 1 minute per UL 1577
CSA component acceptance notice #5A
VDE certificate of conformity
DIN V VDE V 0884-10 (VDE V 0884-10):2006-12
VIORM = 560 V peak
APPLICATIONS
RS-232/RS-422/RS-485 transceiver
Industrial field bus isolation
Power Supply start up and Gate Drive
Isolated Sensor Interface
Figure 1ADuM5000 Functional Diagram
1 Protected by U.S. Patents 5,952,849, 6,873,065. and 7075 329 B2, Other
patents pending.
Industrial PLC
GENERAL DESCRIPTION
The ADuM50001 is an isolated DC/DC converter. Based on
Analog Devices’ iCoupler® technology, the DC/DC converter
provides up to 500 mW of regulated, isolated power at either
5.0V from a 5.0V input supply or 3.3V from a 3.3V or 5.0V
supply. Analog Devices’ chip-scale transformer iCoupler
technology is used both for the DC/DC converter. The result is a
small form-factor total-isolation solution.
ADuM5000 units may be used in combination with ADuM540x
and ADuM520x with isoPower to achieve higher output power
levels.
Rev. PrA
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 ofthird parties that may result fromits use. Specifications subject to change without notice. No
licenseis granted byimplication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
©2008 Analog Devices, Inc. All rights reserved.
Preliminary Technical Data
ADuM5000
TABLE OF CONTENTS
Applications....................................................................................... 1
Absolute Maximum Ratings ............................................................8
ESD Caution...................................................................................8
Pin Configuration and Function Descriptions..............................9
Application Information................................................................ 12
Theory of operation ................................................................... 12
PC Board Layout ........................................................................ 12
Thermal Analysis ....................................................................... 12
Insulation Lifetime..................................................................... 13
Outline Dimensions....................................................................... 15
Ordering Guide .......................................................................... 15
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics – 5V Primary Input Supply / 5V
Secondary Isolated Supply .......................................................... 3
Electrical Characteristics – 3.3V Primary Input Supply / 3.3V
Secondary Isolated Supply .......................................................... 4
Electrical Characteristics – 5V Primary Input Supply / 3.3V
Secondary Isolated Supply .......................................................... 5
Package Characteristics ............................................................... 6
Insulation and Safety-Related Specifications............................ 6
DIN V VDE V 0884-10 (VDE V 0884-10) Insulation
Characteristics .............................................................................. 7
Recommended Operating Conditions ...................................... 7
REVISION HISTORY
Rev. PrA | Page 2 of 15
Preliminary Technical Data
SPECIFICATIONS
ADuM5000
ELECTRICAL CHARACTERISTICS – 5V PRIMARY INPUT SUPPLY / 5V SECONDARY ISOLATED SUPPLY1
4.5 V ≤ VDD1 ≤ 5.5 V, VSEL=VISO; all voltages are relative to their respective ground. All min/max specifications apply over the entire
recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD = 5.0 V, VISO = 5.0 V, VSEL= VISO
.
Table 1.
Parameter
Symbol
VISO
VISO(LINE)
VISO(LOAD)
VISO(RIP)
Min
Typ
5.0
1
1
75
Max
Unit
V
mV/V
%
Test Conditions
Setpoint
4.7
5.4
IISO=0mA
IISO=50mA, VDD1=4.5V to 5.5V
IISO = 10mA to 100mA
Line Regulation
Load Regulation
Output Ripple
5
mVP-P
5MHz Bandwidth, CBO=0.1μF ║ 6.6μF,
ISO = 100mA
I
Output Noise
VISO(N)
200
mVP-P
20MHz Bandwidth, CBO=0.1μF ║
6.6μF, IISO = 100mA
Switching Frequency
PWM Frequency
IDD1 Supply Current, Full VISO load2
fOSC
fPWM
IDD1(Max)
180
625
290
MHz
kHz
mA
IISO=100mA
1 All voltages are relative to their respective ground.
2 IDD1(MAX) is the input current under full dynamic and VISO load conditions.
Rev. PrA | Page 3 of 15
ADuM5000
Preliminary Technical Data
ELECTRICAL CHARACTERISTICS – 3.3V PRIMARY INPUT SUPPLY / 3.3V SECONDARY ISOLATED SUPPLY1
3.0 V ≤ VDD1 ≤ 3.6 V, VSEL=GNDISO; all voltages are relative to their respective ground. All min/max specifications apply over the entire
recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD = 3.3 V, VISO = 3.3 V, VSEL
=
GNDISO
.
Table 2.
Parameter
Symbol
VISO
VISO(LINE)
VISO(LOAD)
VISO(RIP)
Min
Typ
3.3
1
1
50
Max
Unit
V
mV/V
%
Test Conditions
Setpoint
3.0
3.6
IISO=0mA
IISO=37.5 mA, VDD1=3.0V to 3.6V
IISO = 6mA to 54mA
Line Regulation
Load Regulation
Output Ripple
5
mVP-P
20MHz Bandwidth, CBO=0.1μF ║ 10μF,
I
ISO = 90mA
Output Noise
VISO(N)
130
mVP-P
20MHz Bandwidth, CBO=0.1μF ║ 10μF,
ISO = 60mA
I
Switching Frequency
PWM Frequency
IDD1 Supply Current, Full VISO load2
fOSC
fPWM
IDD1(Max)
180
625
175
MHz
kHz
mA
IISO=100mA
1 All voltages are relative to their respective ground.
2 IDD1(MAX) is the input current under full dynamic and VISO load conditions.
Rev. PrA| Page 4 of 15
Preliminary Technical Data
ADuM5000
ELECTRICAL CHARACTERISTICS – 5V PRIMARY INPUT SUPPLY / 3.3V SECONDARY ISOLATED SUPPLY1
4.5 V ≤ VDD1 ≤ 5.5 V, VSEL= GNDISO, all voltages are relative to their respective ground. All min/max specifications apply over the entire
recommended operating range, unless otherwise noted. All typical specifications are at TA = 25°C, VDD = 5.0 V, VISO = 3.3 V, VSEL
=
GNDISO
.
Table 3.
Parameter
Symbol
VISO
VISO(LINE)
VISO(LOAD)
VISO(RIP)
Min
Typ
3.3
1
1
50
Max
Unit
V
mV/V
%
Test Conditions
Setpoint
3.0
3.6
IISO=0mA
IISO=50mA, VDD1=4.5V to 5.5V
IISO = 10mA to 100mA
Line Regulation
Load Regulation
Output Ripple
5
mVP-P
20MHz Bandwidth, CBO=0.1μF ║ 10μF,
I
ISO = 100mA
Output Noise
VISO(N)
130
mVP-P
20MHz Bandwidth, CBO=0.1μF ║ 10μF,
ISO = 100mA
I
Switching Frequency
PWM Frequency
IDD1 Supply Current, Full VISO load2
fSW
fPWM
IDD1(Max)
180
625
230
MHz
kHz
mA
IISO=100mA
1 All voltages are relative to their respective ground.
2 IDD1(MAX) is the input current under full dynamic and VISO load conditions.
Rev. PrA | Page 5 of 15
ADuM5000
Preliminary Technical Data
PACKAGE CHARACTERISTICS
Table 4.
Parameter
Symbol
RI-O
CI-O
Min
Typ
1012
2.2
Max
Unit
Ω
pF
Test Conditions
Resistance (Input-to-Output)1
Capacitance (Input-to-Output)1
Input Capacitance2
f = 1 MHz
CI
4.0
pF
IC Junction to Ambient Thermal Resistance
θCA
45
°C/W
Thermocouple located at center of
package underside, test conducted on 4
layer board with thin traces3.
Thermal Shutdown
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
TSSD
TSSD-HYS
150
20
°C
°C
TJ Rising
1 Device considered a 2-terminal device; Pins 1, 2, 3, 4, 5, 6, 7, and 8 shorted together and Pins 9, 10, 11, 12, 13, 14, 15, and 16 shorted together.
2 Input capacitance is from any input data pin to ground.
3 Refer to the Power Considerations section for thermal model definitions
Table 5.
UL (Pending)
CSA (Pending)
VDE (Pending)
Recognized under 1577 component
recognition program1
Approved under CSA Component
Acceptance Notice #5A
Certified according to DIN V VDE V 0884-10
(VDE V 0884-10):2006-122
Reinforced insulation,
2500 V rms isolation voltage
Reinforced insulation per CSA 60950-1-03
and IEC 60950-1,
Reinforced insulation, 560 V peak
400 V rms (566 V peak)maximum working
voltage
File E214100
File 205078
File 2471900-4880-0001
1 In accordance with UL1577, 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 DIN V VDE V 0884-10, each ADuM5000 is proof tested by applying an insulation test voltage ≥1050 V peak for 1 sec (partial discharge detection
limit = 5 pC). The * marking branded on the component designates DIN V VDE V 0884-10 approval.
INSULATION AND SAFETY-RELATED SPECIFICATIONS
Table 6.
Parameter
Symbol Value
Unit Conditions
Rated Dielectric Insulation Voltage
Minimum External Air Gap (Clearance)
2500
>8 min
V rms 1 minute duration
L(I01)
L(I02)
mm
Measured from input terminals to output terminals,
shortest distance through air
Minimum External Tracking (Creepage)
>8 min
mm
Measured from input terminals to output terminals,
shortest distance path along body
Minimum Internal Gap (Internal Clearance)
Tracking Resistance (Comparative Tracking Index)
Isolation Group
0.017 min mm
Insulation distance through insulation
DIN IEC 112/VDE 0303 Part 1
Material Group (DIN VDE 0110, 1/89, Table 1)
CTI
>175
IIIa
V
Rev. PrA| Page 6 of 15
Preliminary Technical Data
ADuM5000
DIN V VDE V 0884-10 (VDE V 0884-10) 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 * marking on packages denotes DIN V VDE V 0884-10 approval.
Table 7.
Description
Conditions
Symbol Characteristic Unit
Installation Classification per DIN VDE 0110
For Rated Mains Voltage ≤ 150 V rms
For Rated Mains Voltage ≤ 300 V rms
For Rated Mains Voltage ≤ 400 V rms
Climatic Classification
Pollution Degree per DIN VDE 0110, Table 1
Maximum Working Insulation Voltage
Input-to-Output Test Voltage, Method B1
I to IV
I to III
I to II
40/105/21
2
VIORM
VPR
560
1050
V peak
V peak
VIORM × 1.875 = VPR, 100% production test, tm = 1 sec,
partial discharge < 5 pC
Input-to-Output Test Voltage, Method A
After Environmental Tests Subgroup 1
After Input and/or Safety Test Subgroup 2 VIORM × 1.2 = VPR, tm = 60 sec, partial discharge < 5 pC
and Subgroup 3
VIORM × 1.6 = VPR, tm = 60 sec, partial discharge < 5 pC
VPR
896
672
V peak
V peak
Highest Allowable Overvoltage
Safety-Limiting Values
Transient overvoltage, tTR = 10 seconds
Maximum value allowed in the event of a failure
( see Figure 2)
VTR
4000
V peak
Case Temperature
Side 1 Current
Side 2 Current
TS
IS1
IS2
RS
150
265
335
>109
°C
mA
mA
Ω
Insulation Resistance at TS
VIO = 500 V
RECOMMENDED OPERATING CONDITIONS
600
500
400
300
200
100
0
Table 8.
Parameter
Symbol
Min Max Unit
Operating Temperature
Supply Voltages1
VDD @ VSEL=0V
TA
−40 +85
°C
VDD
VDD
2.7
4.5
5.5
5.5
V
V
VDD @ VSEL=5V
1 All voltages are relative to their respective ground.
0
50
100
150
200
Ambient Tempearture (°C)
Figure 2. Thermal Derating Curve, Dependence of Safety Limiting Values on
Case Temperature, per DIN EN 60747-5-2
Rev. PrA | Page 7 of 15
Preliminary Technical Data
ADuM5000
ABSOLUTE MAXIMUM RATINGS
Ambient temperature = 25°C, unless otherwise noted.
Table 9.
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.
Parameter
Rating
Storage Temperature (TST)
−55°C to +150°C
Ambient Operating Temperature (TA) −40°C to +105°C
1
Supply Voltages (VDD, VISO
)
−0.5 V to +7.0 V
Input Voltage
(CTR,RCIN, VSEL
−0.5 V to VDDI + 0.5 V
1, 2
)
Output Voltage
−0.5 V to VDDO + 0.5 V
1, 2
(RCOUT
)
ESD CAUTION
Average Total Output Current 3
IISO
100mA
−100 kV/μs to +100 kV/μs
Common-Mode Transients4
1 All voltages are relative to their respective ground.
2 VDDI and VDDO refer to the supply voltages on the input and output sides of a
given channel, respectively. See the PC Board Layout section.
3 See Figure 2 for maximum rated current values for various temperatures.
4 Refers to common-mode transients across the insulation barrier. Common-
mode transients exceeding the Absolute Maximum Ratings may cause latch-
up or permanent damage.
Table 10. Maximum Continuous Working Voltage1
Parameter
Max
Unit
Constraint
AC Voltage, Bipolar Waveform
AC Voltage, Unipolar Waveform
Basic Insulation
424
V peak
V peak
V peak
V peak
50-year minimum lifetime
600
560
Maximum approved working voltage per IEC 60950-1
Maximum approved working voltage per IEC 60950-1 and VDE
V 0884-10
Reinforced Insulation
DC Voltage
Basic Insulation
Reinforced Insulation
600
560
V peak
V peak
Maximum approved working voltage per IEC 60950-1
Maximum approved working voltage per IEC 60950-1 and VDE
V 0884-10
1 Refers to continuous voltage magnitude imposed across the isolation barrier. See the Insulation Lifetime section for more details.
Table 11. Truth Table (Positive Logic)
RCSEL
Input
RCIN
Input
RCOUT
Output
VSEL
VDDI
Input Output
VISO
Input1
Notes
H
H
H
H
L
X
X
X
X
FB-PWM
FB-PWM
FB-PWM
FB-PWM
RCIN
H
L
H
L
X
L
5.0V
5.0V
3.3V
3.3V
5.0V
X
5.0V
3.3V
5.0V
3.3V
X
Master mode operation, Self Regulating
Master mode operation, Self Regulating
Master mode operation, Self Regulating
Master mode operation, Self Regulating
Slave mode operation, Regulation from another isoPower part.
Low power mode, Converter disabled
EXT-PWM
L
L
L
X
L
H
X
X
X
X
WARNING! This combination of RCIN and RCSEL is prohibited.
Damage will occur on the secondary due to exess output voltage at
VISO. RCin must be either Low or a PWM signal from a master
isoPower part..
Rev. PrA | Page 8 of 15
Preliminary Technical Data
ADuM5000
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 3. ADuM5200 Pin Configuration
Table 12. ADuM5000 Pin Function Descriptions
Pin No. Mnemonic Description
1
VDD1
Primary Supply Voltage 3.0V to 5.5 V. Pin 1 and Pin 7 are internally connected, and connecting both to VDD1 is
recommended
2,8
GND1
Ground 1. Ground reference for converter Primary. Pin 2 and Pin 8 are internally connected, and it is recommended that
both pins be connected to a common ground.
3
4
NC
RCIN
No Internal Connection.
Regulation Control Input, In slave power configuration (RCSEL=Low), this pin is connected to the RCOUT of a master
isoPower device, or tied low to disable the converter. In Master/Stand alone mode(RCSEL=High) this pin has no
function. This pin is weakly pulled to low. In Noisy environments it should be tied to low or to a PWM control source.
Warning -This pin must not be tied high if RCSEL is low, this combination will cause excessive volatge on the
secondary, damaging the ADuM5000 and possibly devices that it powers.
5
RCOUT
RCSEL
VDD1
Regulation Control Output, In master power configuration, this pin is connected to the RCIN of a slave isoPower device
to allow the ADuM5000 to regulate additional devices.
Control input, Determines Master/self regulation (CTL High) mode or Slave mode(CTL Low)allowing external
regulation. This pin is weakly pulled to high. In noisy environments it should be tied either high or low.
Primary Supply Voltage 3.0V to 5.5 V. Pin 1 and Pin 7 are internally connected, and connecting both to VDD1 is
recommended.
6
7
9,15
10
GNDISO
VISO
Ground reference for converter Secondary. Pin 9 and Pin 15 are internally connected, and it is recommended that both pins
be connected to a common ground.
Secondary Supply Voltage Output External Loads, 3.3V (VSEL Low) or 5.0V (VSEL High), 5.0V output Functioanlity not
guaranteed for a 3.3V primary supply input. Pin 10 and Pin 16 are internally connected, and connecting both to GNDISO is
recommended.
11
12
13
NC
NC
VSEL
No Internal Connection.
No Internal Connection.
Output Voltage Selection: When VSEL = VISO then the Viso set point is 5.0V, When VSEL = GNDISO Then the VISO setpoint
is 3.3V. This pin is weakly pulled to high. In noisy environments it should be tied either high or low. In Slave regulation
mode this pin has no function.
14
16
NC
VISO
No Internal Connection.
Secondary Supply Voltage Output External Loads, 3.3V (VSEL Low) or 5.0V (VSEL High), 5.0V output Functioanlity not
guaranteed for a 3.3V primary supply input. Pin 10 and Pin 16 are internally connected, and connecting both to GNDISO is
recommended.
Rev. PrA | Page 9 of 15
ADuM5000
Preliminary Technical Data
Typical Performance Characteristics
0.4
0.35
0.3
0.25
0.2
0.15
0.1
3.3V in / 3.3V out
5V in / 3.3V out
5V in / 5V out
0.05
0
0
0.02
0.04
0.06
0.08
0.1
0.12
Output Current (A)
Figure 7. Typical VISO Transient Load Response 5V Output 10%-90%
Load Step
Figure 4. Typical Power Supply Efficiency at 5V/5V, 3.3V/3.3V and
5V/3.3V
0.12
0.1
0.08
0.06
0.04
3.3V in / 3.3V out
5V in / 3.3V out
0.02
5V in / 5V out
0
Figure 8. Typical Transient Load Response 3V Output 10%-100% Load
Step
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
Input Current (A)
Figure 5. Typical Isolated Output Supply Current, IISO as a function of
external load, no dynamic current draw at 5V/5V, 3.3V/3.3V and
5V/3.3V
4
3.5
3
2.5
2
Idd
1.5
1
Pow er
0.5
0
3
3.5
4
4.5
5
5.5
6
6.5
Input Voltage (V)
Figure 6. Typical Short Circuit Input Current and Power vs. VDD supply
voltage
Rev. PrA| Page 10 of 15
Preliminary Technical Data
ADuM5000
Figure 10. Typical Viso=3.3V Output Voltage Ripple at 90% Load
Figure 9. Typical Viso=5V Output Voltage Ripple at 90% Load
Rev. PrA | Page 11 of 15
ADuM5000
Preliminary Technical Data
APPLICATION INFORMATION
and 8 and between Pins 9 and 16 should also be considered
unless the both of the common ground pins are connected
together close to the package.
THEORY OF OPERATION
The DC/DC converter section of the ADuM5000 works on
principles that are common to most modern power supply
designs. It is implemented as a secondary side controller with
isolated PWM feedback. VDD1 power is supplied to an oscillating
circuit that switches current into a chip-scale air core
transformer. Power is transferred to the secondary side where it
is rectified to a DC voltage. The power is then regulated to
either 3.3or 5V and supplied to the secondary side data section
and to the VISO pin for external use. Active feedback is
implemented by a digital feedback path. The output regulator
creates a pulse width modulated signal which is coupled to the
input side and switches the oscillator on and off regulating the
power. Feedback allows for significantly higher power,
efficiency, and synchronization of multiple supplies.
Figure 11. Recommended Printed Circuit Board Layout
In applications involving high common-mode transients, care
should be taken to ensure that board coupling across the isolation
barrier is minimized. Furthermore, the board layout should be
designed such that any coupling that does occur equally affects
all pins on a given component side. Failure to ensure this could
cause voltage differentials between pins exceeding the device’s
Absolute Maximum Ratings, specified in Table 9 thereby
leading to latch-up and/or permanent damage.
The ADuM5000 provides its Regulation Control output
(RCout) signal that can be connected to other isoPower devices.
This allows a single regulator to control multiple power
modules without contention. When auxiliary power modules
are present, the VSIO pins can be connected together to work as a
single supply. Since there is only one feedback control path, the
supplies will work together seamlessly. The ADuM5000 can
only be a source of Regulation Control, other devices
The ADuM5000 is a power device that dissipates about 1W of
power when fully loaded and running at maximum speed.
Since 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 will be used at
high ambient temperatures, care should be taken to provide a
thermal path from the GND pins to the PCB ground plane.
The board layout in Figure 11 shows enlarged pads for pins 2, 8,
9, and 15. Multiple vias should be implemented from the pad to
the ground plane. This will significantly reduce the
temperatures inside of the chip. The dimensions of the
expanded pads are left to discretion of the designer and the
available board space.
There is hysteresis into the input VDD input voltage detect
circuit. Once the DC/DC converter is active, the input voltage
must be decreased below the turn on threshold to disable the
converter. This feature ensures that the converter does not go
into oscillation due to noisy input power.
PC BOARD LAYOUT
The ADuM5000 digital isolator with a ½W isoPower integrated
DC/DC converter requires no external interface circuitry for
the logic interfaces. Power supply bypassing is required at the
input and output supply pins (Figure 11). The power supply
section of the ADuM5000 uses a very high oscillator frequency
to efficiently pass power 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, ripple suppression and proper regulation
require a large value capacitor. These are most conveniently
connected between Pins 1 and 2 for VDD1 and between Pins 15
and 16 for VISO. To suppress noise and reduce ripple, a parallel
combination of at least two capacitors is required. The
recommended capacitor values are 0. 1 μF, and 6.6μF. It is
strongly recommended that a very low inductance ceramic or
equivalent capacitor be used for the smaller value. The total lead
length between both ends of the capacitor and the input power
supply pin should not exceed 20 mm. Bypassing between Pins 1
THERMAL ANALYSIS
The ADuM5000 parts consist of four internal die, attached to a
split lead frame with two die attach paddles. For the purposes
of thermal analysis it is treated as a thermal unit with the
highest junction temperature reflected in the θJA from Table 4.
The value of θJA is based on measurements taken with the part
mounted on a JEDEC standard 4 layer board with fine width
traces and still air. Under normal operating conditions the
ADuM5000 will operate at full load across the full temperature
range without derating the output current. However, following
the recommendations in the PC Board Layout section will
decrease the thermal resistance to the PCB allowing increased
thermal margin it high ambient temperatures.
CURRENT LIMIT AND THERMAL OVERLOAD
PROTECTION
Rev. PrA| Page 12 of 15
Preliminary Technical Data
ADuM5000
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, reducing the output current to zero. When the
junction temperature drops below 130°C (typical), the PWM is
turned on again and output current is restored to its nominal
value.
that the ADuM5000, ADuM5200, and ADuM5400 can only be
used in certain master slave combinations as listed in Table 13.
Slave
ADuM5000 ADuM5200 ADuM5400
ADuM5000
ADuM5200
ADuM5400
Y
N
Y
Y
N
Y
N
N
N
Master
Table 13 Allowed combinations of isoPower Parts
The allowed combinations of master and slave configured parts
listed in Table 13 is sufficient to make any combination of
power and channel count. Table 14 illustrates how isoPower
devices can provide many combinations of data channel count
and multiples of the single unit power.
Consider the case where a hard short from VISO to ground
occurs. At first, the ADuM5000 reaches its maximum current,
which is proportional to the voltage applied at VDD1. Power is
dissipated in the primary (see Error! Reference source not
found.). 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 reducing the
output current to zero. As the junction temperature cools and
drops below 130°C, the PWM turns on and power is again
dissipated in the primary, again causing the junction
Number of Data Channels
0
2
4
6
1 Unit
Power
ADuM5000
Master
ADuM520x ADuM540x ADuM540x
Master
Master
Master
ADuM12xx
2 Unit
Power
ADuM5000
Master
ADuM5000
Slave
ADuM500x ADuM540x ADuM540x
Master Master Master
ADuM5200 ADuM5200 ADuM520x
Slave Slave Slave
temperature to rise above 150°C. This thermal oscillation
between 130°C and 150°C causes a current oscillation that
continues 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,
device power dissipation should be externally limited so
junction temperatures do not exceed 130°C.
3 Unit
Power
ADuM5000
Master
ADuM5000
Slave
ADuM5000
Slave
ADuM5000 ADuM540x ADuM540x
Master Master Master
ADuM5000 ADuM5000 ADuM520x
Slave Slave Slave
ADuM520x ADuM5000 ADuM5000
Slave Slave Slave
POWER CONSIDERATIONS
Table 14 Configurations for Power and Data Channels
The ADuM5000 Converter Primary side, is protected from
premature operation by Under Voltage Lock Out (UVLO)
circuitry. Below the minimum operating voltage, the power
converter holds its oscillator inactive.
INSULATION LIFETIME
All insulation structures will eventually break down when
subjected to voltage stress over a sufficiently long period. The
rate of insulation degradation is dependant 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.
INCREASING AVAILABLE POWER
The ADuM5000 devices are designed with capability of running
in combination with other compatible isoPower devices. The
RCOUT RCIN and RCSEL pins allow the ADuM5000 to provide its
PWM signal to another device through the RCOUT pin acting as
a master. It can also receive a PWM signal from another device
through the RCIN pin and act as a slave to that control signal.
The RCSEL pin chooses whether the part will act 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/Stand alone unit, it generates its own PWM feedback
signal to regulate itself and slave devices.
ADI 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 10 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 ADuM5000 can act as a master or a slave deice, the
ADuM5400 can only be a master/stand alone, and the
ADuM5200 can only be a slave/Stand alone device. This means
The insulation lifetime of the ADuM5000 depends on the
Rev. PrA | Page 13 of 15
ADuM5000
Preliminary Technical Data
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 12, Figure 13, and Figure 14 illustrate these
different isolation voltage waveforms.
RATED PEAK VOLTAGE
0V
Figure 12. Bipolar AC Waveform
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the ac bipolar condition
determines ADI’s recommended maximum working voltage.
RATED PEAK VOLTAGE
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 10 can be applied while
maintaining the 50-year minimum lifetime provided the voltage
conforms to either the unipolar ac or dc voltage cases. Any cross
insulation voltage waveform that does not conform to Figure
131or Figure 14 should be treated as a bipolar ac waveform and
its peak voltage should be limited to the 50 year lifetime voltage
value listed in Table 10.
0V
Figure 13. Unipolar AC Waveform
RATED PEAK VOLTAGE
0V
Figure 14. DC Waveform
1 The voltage presented in Figure 13 is shown as sinusoidal for illustration
purposes only. It is meant to represent any voltage waveform varying
between 0 and some limiting value. The limiting value can be positive or
negative, but the voltage cannot cross 0V.
Rev. PrA| Page 14 of 15
Preliminary Technical Data
OUTLINE DIMENSIONS
ADuM5000
10.50 (0.4134)
10.10 (0.3976)
16
1
9
8
7.60 (0.2992)
7.40 (0.2913)
10.65 (0.4193)
10.00 (0.3937)
1.27 (0.0500)
BSC
0.75 (0.0295)
0.25 (0.0098)
2.65 (0.1043)
2.35 (0.0925)
× 45°
0.30 (0.0118)
0.10 (0.0039)
8°
0°
0.51 (0.0201)
0.31 (0.0122)
SEATING
PLANE
COPLANARITY
0.10
1.27 (0.0500)
0.40 (0.0157)
0.33 (0.0130)
0.20 (0.0079)
COMPLIANT TO JEDEC STANDARDS MS-013-AA
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.
Figure 15. 16-Lead Standard Small Outline Package [SOIC_W]
Wide Body (RW-16)
Dimension shown in millimeters and (inches)
ORDERING GUIDE
Number of Number of Maximum Maximum
Maximum
Inputs,
VDD1 Side
Inputs,
VDD2 Side
Data Rate Propagation Pulse Width
Package
Model
ADuM5200ARWZ1,
(Mbps)
Delay, 5 V (ns) Distortion (ns) Temperature Range (°C) Option
0
0
0
0
0
−40 to +105
16-Lead SOIC_W
1
Tape and reel are available. The additional “-RL7” suffice designates a 7” (1,000 units) tape and reel options.
Rev. PrA | Page 15 of 15
PR07539-0-5/08(PrA)
相关型号：
ADUM5400CRWZ-RL
Quad-Channel Isolator with Integrated DC-to-DC Converter (4/0 channel directionality)
ADI
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