MAX22518EVKIT [MAXIM]
MAX22518 Evaluation Kit Evaluate: MAX22517âMAX22519;
| 型号： | MAX22518EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAX22518 Evaluation Kit Evaluate: MAX22517âMAX22519 |
| 文件： | 总13页 (文件大小：2165K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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MAX22518 Evaluation Kit
Evaluate: MAX22517‒MAX22519
General Description
Features
The MAX22518 evaluation kit (EV kit) provides a proven
design to evaluate the MAX22517–MAX22519 family of
● Self-Generated Isolated Field-Side Supply V
DDF
● 2 Unidirectional Channels with Input Charge Pumps
(MAX22517 and MAX22518) and Open-Drain
Outputs (MAX22518 and MAX22519)
self-powered, dual-channel, 3.5kV
digital isolators.
RMS
The EV kit allows easy access to both channels through
either terminal blocks or test points. The isolated field-side
● Surge and Short Protection with Onboard
supply V
can also be accessed using the test points.
DDF
Components
• 24VAC Short Protection
• ±1kV Line-to-Ground and ±2kV Line-to-Line Surge
Tolerance (1.2/50μs Waveform)
The EV kit includes necessary external components to
demonstrate the device’s surge performance (1.2/50μs)
up to ±1kV between input and field ground (differential),
or up to ±2kV between inputs (common mode).
● Terminal Blocks and Test Points for Easy Connection
The MAX22518 EV kit is designed to support all three
variants in the MAX22517–MAX22519 family. Jumpers
on the logic-side outputs (OUT1L and OUT2L) allow to
connect or disconnect the pullup resistors, depending
on whether U1 has open-drain or push-pull outputs. The
evaluation board comes with the wide-body 8-pin SOIC
package type with 5.5mm creepage and clearance. See
Table 1 for EV kit details.
to External Equipment
● Single Logic-Side Supply V
, Range from 3V
DDL
to 5.5V
● Guaranteed Up to 3.5kV
Isolation for 60s
RMS
● -40°C to +125°C Temperature Range
● Proven PCB Layout
The MAX22518 EV kit (MAX22518EVKIT#) is fully
assembled and tested, and comes populated with the
MAX22518AWA+ (Figure 1). The board also supports the
MAX22517AWA+ and MAX22519AWA+, but requires the
user to replace U1. See Table 1 and Evaluate MAX22517
and MAX22519 on MAX22518EVKIT# section for details.
Ordering Information appears at end of data sheet.
The EV kit is powered from a single power supply on the
logic side, V
, in range from 3V to 5.5V. The field-side
DDL
supply, V
is generated by the device and has a nomi-
DDF,
nal voltage of 3.3V. The logic-side ground (GNDL) and
field-side ground (GNDF) are isolated and can have con-
tinuous working voltage difference up to 445V
. For
RMS
evaluating the electrical parameters of the devices without
any isolation between the two sides, a common ground
can be shared between GNDL and GNDF.
Note: When ordering an EV kit, if the desired device is
not the MAX22518AWA+, request samples of the desired
MAX22517–MAX22519 IC that can be soldered to the PCB.
319-100553; Rev 2; 8/20
MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
Figure 1. MAX22518EVKIT#
Table 1. EV Kit Information
EVKIT PART #
DEFAULT DEVICE
PACKAGE TYPE
POPULATED IC
MAX22518EVKIT#
MAX22518AWA+
8-SOIC Wide Body
With Input Charge Pumps and Open-Drain Outputs
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
3) The field-side supply V
is generated by U1. Con-
DDF
Quick Start
nect a DMM between the EV kit VDDF and GNDF test
points. Verify that the V voltage is about 3.3V.
Required Equipment
● MAX22518EVKIT#
DDF
4) Connect the signal/function generator output to IN1F
test point and the generator ground to GNDF test
point. Set the function generator output to be a square
wave with the amplitude of 3.3V, 10kHz frequency,
and 50% duty cycle. Enable the function generator
output.
●
One DC power supply with an output range up to 5.5V
● Digital Multimeter
● Signal/function generator
● Oscilloscope
Procedure
5) Observe the logic-side output voltage on the OUT1L
test point to be a square wave with the amplitude of
The MAX22518 EV kit is fully assembled and ready for
evaluation. Use the following steps to verify board func-
tionality:
V
, 10kHz frequency, and 50% duty cycle. Note
DDL
that the MAX22518 has open-drain outputs and the
EV kit has a 2kΩ pullup resistor on both outputs.
1) Verify jumper settings. All jumpers are closed by
default. See Table 2 for all shunt positions.
6) Repeat step 4 and step 5 to verify the functionality of
IN2F and OUT2L channel.
2) Connect a DC power supply between the EV kit VDDL
and GNDL test points. Set the output between 3V and
5.5V, and enable the power supply.
DC POWER SUPPLY
3V TO 5.5V
-
+
OSCILLOSCOPE
SIGNAL GENERATOR
OUT1
OUT2
Figure 2. MAX22518 EV Kit Typical Test Setup
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
Table 2. MAX22518 EV Kit Connectors and Shunt Positions
SHUNT
POSITION
CONNECTOR
FIELD SIDE
DESCRIPTION
1-2*
Open
1
Connect U1 V
to field-side inputs through 27kΩ resistors
DDF
J1
Disconnect U1 V
from field-side inputs through 27kΩ resistors
DDF
Connector or test point for U1 field-side input IN1F; same as IN1F test point
Connector or test point for U1 field-side ground GNDF; same as GNDF test point
Connector or test point for U1 field-side input IN2F; same as IN2F test point
Connector or test point for U1 field-side ground GNDF; same as GNDF test point
2
T1
3
4
VDDF
GNDF
N/A
N/A
N/A
N/A
Test point for U1 field-side supply V
DDF
Test point for U1 field-side ground GNDF
Test point for U1 field-side input IN1F
Test point for U1 field-side input IN2F
IN1F
IN2F
LOGIC SIDE
Connect the 2kΩ pullup resistor to U1 logic-side output OUT1L; required when U1 is
MAX22518AWA+ or MAX22519AWA+
1-2*
Open
1-2*
J2
J3
Disconnect the 2kΩ pullup resistor from U1 logic-side output OUT1L; Used when U1 is
MAX22517AWA+
Connect the 2kΩ pullup resistor to U1 logic-side output OUT2L; required when U1 is
MAX22518AWA+ or MAX22519AWA+
Disconnect the 2kΩ pullup resistor from U1 logic-side output OUT2L; Used when U1 is
MAX22517AWA+
Open
1
Connector or test point for U1 logic-side ground GNDL; same as GNDL test point
Connector or test point for U1 logic-side output OUT2L; same as OUT2L test point
Connector or test point for U1 logic-side ground GNDL; same as GNDL test point
Connector or test point for U1 logic-side output OUT1L; same as OUT1L test point
2
T2
3
4
VDDL
GNDL
N/A
N/A
N/A
N/A
N/A
Test point for U1 logic-side supply V
DDL
Test point for U1 logic-side ground GNDL
Test point for U1 logic-side output OUT1L
Test point for U1 logic-side output OUT2L
Test point for protective earth on the EV kit
OUT1L
OUT2L
EARTH
*Default configuration
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
capacitors on each channel (C6 and C7 on IN1F, C8 and
C9 on IN2F) when the relay is in the open position. The
charge stored in the capacitors provides enough energy to
clean the oxidation growth on the relay contact when the
relay is switched from the opened to the closed position.
Diode D1 is included to prevent any field input reverse
Detailed Description of Hardware
The MAX22518 EV kit provides a proven layout for the
MAX22517–MAX22519 self-powered 2-channel digital
isolators, and allows the user to evaluate the features of
the devices.
External Power Supply
The EV kit is powered from a single external low-voltage
current from flowing into the V
pin of the device. C7
DDF
on IN1F and C9 on IN2F are not installed and the user
can choose to install them if larger discharging capacitors
are desired. Refer to the MAX22517–MAX22519 IC data
sheet for more details.
supply on the logic-side, V
, which can be between 3V
DDL
and 5.5V. The isolated field-side supply V
is generat-
DDF
ed by the integrated DC-DC converter and has a nominal
3.3V output voltage. Connect the external power source
between VDDL and GNDL test points. The isolated field-
Jumper J2 and J3 are provided to connect a 2kΩ pul-
lup resistor to each logic-side output. The MAX22517–
MAX22519 family has two output driver options, open-
drain or push-pull. The MAX22518 and MAX22519 fea-
ture open-drain outputs. Install jumpers on both J2 and
J3 when the MAX22518 or MAX22519 is installed as U1.
The MAX22517 has push-pull outputs, thus J2 and J3 are
open when the MAX22517 is installed as U1. By default,
the MAX22518EVKIT# has the MAX22518AWA+ installed
as U1. See Table 2 for all shunt positions.
side supply V
can be measured using a DMM con-
DDF
nected between VDDF and GNDF test points.
Decoupling Capacitors
The logic-side supply V
is decoupled with 1000pF,
DDL
0.1μF, and 1μF low-ESR and low-ESL ceramic capacitors,
which are placed close to the V
are in parallel with each other.
pin of the device and
DDL
The isolated field-side supply V
DDF
is decoupled with
IEC 61000-4 Transient Immunity
1000pF and 0.1μF low-ESR and low-ESL ceramic capaci-
tors which are placed close to the V pin of the device
The typical application for the MAX22517–MAX22519
requires them to pass basic transient immunity standards
as defined by IEC 61000-4-x, covering -2 for Electrostatic
Discharge (ESD), -4 for Electrical Fast Transient/Burst
(EFT), and -5 for surge immunity (1.2/50μs pulse). The
MAX22518 EV kit includes circuitry to support testing to
these standards up to:
DDF
and are in parallel with each other. See the MAX22518 EV
Kit PCB Layout Diagrams for details.
I/O Connections
Two test points and a terminal block on each side of the
EV kit allow easy connections to benchtop equipment
such as signal generator and oscilloscope, or application
circuits such as relay contact. A typical test setup is shown
in Figure 2.
• ±1kV IN_F to GNDF surge with 10kΩ input series
resistor.
• ±2kV IN_F to IN_F surge with 10kΩ input series
On the field side, terminal block T1 has four positions,
pin 1 and pin 2 are channel 1 field-side input (IN1F) and
ground (GNDF), and pin 3 and pin 4 are channel 2 field-
side input (IN2F) and ground (GNDF). Similarly, terminal
block T2 has four positions for both channels, pin 4 and
pin 3 are channel 1 logic-side output (OUT1L) and ground
(GNDL), and pin 2 and pin 1 are channel 2 logic-side
output (OUT2L) and ground (GNDL). Note due to the
connector placement orientation, pin 1 of T2 is located at
the bottom position of the connector while pin 1 of T1 is
the top position of the connector. See Table 2 for detailed
connector positions.
resistor.
• ±10kV IN_F to Earth surge with 10kΩ input series
resistor, and a Y capacitor between GNDF and
Earth.
• ±4kV EFT with criterion A performance with 10kΩ
input series resistor.
• ±8kV IN_F to GNDF ESD contact discharge with
10kΩ input series resistor.
• ±15kV IN_F to GNDF ESD air-gap discharge with
10kΩ input series resistor.
The 10kΩ input series resistors on the IN1F and IN2F
pins help limit the surge and ESD current into the device.
The TVS diodes D1 and D2 are included in case higher
surge or ESD levels are desired by the user applica-
tion. C10 and C11 are 1000pF safety rated Y capacitors
placed between protective earth (PE) and field ground
(GNDF), and between logic ground (GNDL) and field
Shunt Positions
On the MAX22518 EV kit, jumper J1 is provided to
connect the field-side supply V
to field inputs
DDF
through a 27kΩ resistor on each channel. This
is useful in relay contact monitoring applications.
The field-side supply V
quickly charges the input
DDF
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
ground (GNDF) to improve the surge and ESD perfor-
mance between the field side and Earth. For systems
where Earth and GNDL are bonded together, the user can
choose to install the resistor R7. See the MAX22518 EV
Kit Schematic Diagram for details.
decoupling with multiple ground vias are implemented in
the MAX22518 EV kit to further improve the radiated emis-
sion performance. Refer to the MAX22517–MAX22519 IC
data sheet for more details.
Evaluate MAX22517 and MAX22519 on
MAX22518EVKIT#
Radiated Emission
The MAX22518 EV kit can meet CISPR 22 Class B
emission standard in an unshielded environment with
proper PCB layout design. The radiated emission results
measured in a 3-meter anechoic chamber with CISPR 22
standard test setup are shown in Figure 3 and Figure 4.
The MAX22518EVKIT# is designed to evaluate all devic-
es in the MAX22517–MAX22519 family. By default,
the MAX22518EVKIT# comes populated with the
MAX22518AWA+.
To evaluate the MAX22517, U1 needs to be replaced with
the MAX22517AWA+. Jumper J2 and J3 should be set to
open since the MAX22517 has push-pull outputs. To eval-
uate the MAX22519, U1 needs to be replaced with the
MAX22519AWA+, and jumper J2 and J3 should be in the
closed position due to MAX22519’s open-drain outputs.
The MAX22518 EV kit has a typical 70pF stitching
capacitance between GNDL and GNDF ground planes,
formed by the internal 2nd and 3rd PCB layers, as
shown in the MAX22518 EV Kit PCB Layout Diagrams.
This stitching capacitor provides a return current path
between the logic side and the field side, thus reduc-
ing the emission caused by the high-frequency signals
crossing the isolation barrier. These high-frequency sig-
nals mainly come from the integrated DC-DC converter.
The peak emission falls at the switching frequency
of the DC-DC converter, which is around 750MHz.
The Y capacitors (C10 and C11) are uninstalled, and other
PCB techniques such as edge guarding vias and supply
When installing U1, make sure pin 1 of the device is
mounted onto pin 1 of U1 on the PCB. Pin 1 is located
at the upper left corner of U1, denoted by a white dot on
the silkscreen.
See the MAX22518 EV Kit Schematic Diagram and the
MAX22518 EV Kit PCB Layout Diagrams for details.
MAX22517-MAX22519 EV KIT RADIATED EMISSION
C10 AND C11 REMOVED, HORIZONTAL SCAN, 3-METER ANTENNA DISTANCE
80
70
60
50
40
30
20
10
0
MAX22518 EMISSION MAX PEAK
CISPR22 3-METER CLASS B LIMITS
CISPR22 3-METER CLASS A LIMITS
IEC 60255-26 10-METER CLASS A LIMITS
30
50
100
200
300
400
500 600 700 800 9001000
FREQUENCY (MHz)
Figure 3. MAX22518 EV Kit Radiated Emission, Horizontal Scan
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
MAX22517-MAX22519 EV KIT RADIATED EMISSION
C10 AND C11 REMOVED, VERTICAL SCAN, 3-METER ANTENNA DISTANCE
80
70
60
50
40
30
20
10
0
MAX22518 EMISSION MAX PEAK
CISPR22 3-METER CLASS B LIMITS
CISPR22 3-METER CLASS A LIMITS
IEC 60255-26 10-METER CLASS A LIMITS
30
50
100
200
300
400
500 600 700 800 9001000
FREQUENCY (MHz)
Figure 4. MAX22518 EV Kit Radiated Emission, Vertical Scan
Ordering Information
PART
TYPE
MAX22518EVKIT# EV Kit with installed MAX22518AWA+
#Denotes RoHS compliance.
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
MAX22518 EV Kit Bill of Materials
ITEM
REF_DES
QTY
MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
CC0603KRX7R0BB104;
GRM188R72A104KA35;
GCJ188R72A104KA01;
HMK107B7104KA;
YAGEO; MURATA;
MURATA; TAIYO YUDEN;
AVX; MURATA
CAPACITOR; SMT (0603); CERAMIC CHIP; 0.1µF; 100V;
TOL = 10%; TG = -55°C TO +125°C; TC = X7R
1
C1, C4
2
0.1µF
06031C104KAT2A;
GRM188R72A104K
GRM1555C1H102JA01;
C1005C0G1H102J050
CAPACITOR; SMT (0402); CERAMIC CHIP; 1000PF; 50V;
TOL = 5%; TG = -55°C TO +125°C
2
3
C2, C3
C5
2
1
MURATA;TDK
1000PF
1µF
UMK107AB7105KA;
CC0603KRX7R9BB105
TAIYO YUDEN;
YAGEO
CAPACITOR; SMT (0603); CERAMIC CHIP; 1µF; 50V;
TOL = 10%; TG = -55°C TO +125°C; TC = X7R
C2012X7S2A105K125AB;
GRJ21BC72A105KE11;
CGA4J3X7S2A105K125AB;
GRM21BC72A105KE01
CAPACITOR; SMT (0805); CERAMIC CHIP; 1µF; 100V;
TOL = 10%; TG = -55°C TO +125°C; TC = X7S
4
C6, C8
2
TDK;MURATA;TDK
1µF
5
6
C10, C11
D1
2
1
DK1E3EA102M86RAH01
BAQ34-GS08
MURATA
VISHAY
1000PF
CAP; SMT; 1000PF; 20%; 250V; E; CERAMIC CHIP
DIODE; SS; SMT (MINIMELF); PIV = 70V; IF = 0.2A
BAQ34-GS08
FAIRCHILD
SEMICONDUCTOR
7
D2, D3
2
SMBJ36CA
36V
DIODE; TVS; SMB (DO-214AA); VRM = 36V; IPP = 10.3A
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE = 0.063IN; WHITE;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
8
EARTH
1
5012
KEYSTONE
KEYSTONE
N/A
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE = 0.063IN; BLACK;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
GNDF_TP1-GNDF_TP3,
GNDL_TP1-GNDL_TP4
9
7
5011
N/A
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE = 0.063IN; YELLOW;
PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
IN1F, IN2F,
OUT1L, OUT2L
10
11
12
4
3
2
5014
KEYSTONE
SULLINS
N/A
PEC02SAAN
0
CONNECTOR; MALE; THROUGH HOLE;
BREAKAWAY; STRAIGHT; 2PINS
J1-J3
PEC02SAAN
CRCW06030000ZS;
MCR03EZPJ000;
ERJ-3GEY0R00
VISHAY DALE;
ROHM;PANASONIC
R1, R2
RESISTOR; 0603; 0Ω; 0%; JUMPER; 0.10W; THICK FILM
13
14
R3, R5
R4, R6
2
2
CRCW060327K0FK
VISHAY DALE
27K
10K
RESISTOR, 0603, 27KΩ, 1%, 100PPM, 0.10W, THICK FILM
CRCW060310K0FK;
ERJ-3EKF1002
VISHAY DALE;
PANASONIC
RESISTOR; 0603; 10K; 1%; 100PPM; 0.10W; THICK FILM
CRCW06032K0FK;
ERJ-3EKF2001;
RC0603FR-072KL
VISHAY DALE;
PANASONIC;
YAGEO
15
R8, R9
2
2K
RESISTOR, 0603, 2KΩ, 1%, 100PPM, 0.10W, THICK FILM
KYCON;KYCON;
SULLINS ELECTRONICS
CORP.
TEST POINT; JUMPER; STR; TOTAL LENGTH = 0.24IN;
BLACK; INSULATION = PBT;
PHOSPHOR BRONZE CONTACT = GOLD PLATED
S1100-B;SX1100-B;
STC02SYAN
16
17
18
SU1-SU3
T1, T2
U1
3
2
1
SX1100-B
1935187
CONNECTOR; FEMALE; THROUGH HOLE;
GREEN TERMINAL BLOCK; STRAIGHT; 4PINS
1935187
PHOENIX CONTACT
MAXIM
EVKIT PART - IC; 2-CHANNEL MICRO-POWERED
DIGITAL ISOLATOR; PACKAGE OUTLINE DRAWING: 21-0262;
PACKAGE LAND PATTERN: 90-0258
MAX22518AWA+
MAX22518AWA+
TEST POINT; PIN DIA = 0.125IN; TOTAL LENGTH = 0.445IN;
BOARD HOLE = 0.063IN; RED; PHOSPHOR BRONZE WIRE SIL;
19
20
21
VDDF, VDDL
PCB
2
1
4
5010
MAX22518
9032
KEYSTONE
MAXIM
N/A
PCB
9032
PCB:MAX22518
MACHINE FABRICATED; ROUND-THRU HOLE SPACER;
NO THREAD; M3.5; 5/8IN; NYLON
MTH1-MTH4
DNI
KEYSTONE
22
23
R7
DNP
DNP
0
0
N/A
N/A
N/A
N/A
OPEN
OPEN
PACKAGE OUTLINE 2512 RESISTOR
C7, C9
PACKAGE OUTLINE 0805 NON-POLAR CAPACITOR
TOTAL
48
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
MAX22518 EV Kit Schematic Diagram
ꢀ E ꢊ ꢐ 2 ꢄ A A ꢍ
ꢀ E ꢊ ꢐ 2 ꢄ A A ꢍ
1
2
1
2
ꢗ 2
ꢗ ꢕ
ꢕ ꢓ ꢑ
ꢖ 2
ꢕ ꢓ ꢑ
ꢖ ꢕ
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
MAX22518 EV Kit PCB Layout Diagrams
1.0ꢀ
MAX22518 EV Kit Component Placement Guide—Top Silkscreen
1.0ꢀ
MAX22518 EV Kit PCB Layout—Top Layer
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
MAX22518 EV Kit PCB Layout Diagrams (continued)
1.0ꢀ
MAX22518 EV Kit PCB Layout—L2 GND
1.0ꢀ
MAX22518 EV Kit PCB Layout—L3 GND
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
MAX22518 EV Kit PCB Layout Diagrams (continued)
1.0ꢀ
MAX22518 EV Kit PCB Layout—Bottom Layer
1.0ꢀ
MAX22518 EV Kit Component Placement Guide—Bottom Silkscreen
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MAX22518 Evaluation Kit
Evaluate: MAX22517–MAX22519
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
DESCRIPTION
0
1
2
6/20
6/20
8/20
Initial release
–
Changed part number from MAX22517–MAX22519 to MAX22518
1–13
6–7
Updated the Radiated Emissions section and Figures 3–4
For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2020 Maxim Integrated Products, Inc.
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