Agilent HCPL-7520
Isolated Linear Sensing IC
Data Sheet
Description
The HCPL-7520 isolated linear
current sensing IC family is
designed for current sensing in
low-power electronic motor
drives. In a typical implementa-
tion, motor current flows through
an external resistor and the
resulting analog voltage drop is
sensed by the HCPL-7520. An
output voltage is created on the
other side of the HCPL-7520
optical isolation barrier. This
single-ended output voltage is
proportional to the motor
current. Since common-mode
voltage swings of several hundred
volts in tens of nanoseconds are
common in modern switching
inverter motor drives, the HCPL-
7520 was designed to ignore very
high common-mode transient
slew rates (of at least 10 kV/µs).
The high CMR capability of the
HCPL-7520 isolation amplifier
provides the precision and
stability needed to accurately
monitor motor current in high
noise motor control environ-
ments, providing for smoother
control (less “torque ripple”) in
various types of motor control
applications.
Functional Diagram
I
DD1
V
DD1
V
IN+
V
IN–
GND1
1
2
3
4
+
–
+
–
I
DD2
8
7
V
DD2
V
OUT
V
REF
GND2
6
5
SHIELD
The product can also be used for
general analog signal isolation
applications. For general
applications, we recommend the
HCPL-7520 (gain tolerance of
±5%).
The HCPL-7520 utilizes
sigma delta (Σ-∆) analog-to-
digital converter technology to
delivery offset and gain accuracy
and stability over time and
temperature. This performance is
delivered in a compact, auto-
insert, 8-pin DIP package that
meets worldwide regulatory
safety standards. (A gull-wing
surface mount option #300 is
also available).
Features
• 15 kV/µs common-mode rejection
at Vcm = 1000 V
• Compact, auto-insertable 8-pin
DIP package
• 60 ppm/°C gain drift vs.
temperature
• –0.6 mV input offset voltage
• 8
µV/°C
input offset voltage vs.
temperature
• 100 kHz bandwidth
• 0.06% nonlinearity, single-ended
amplifer oon
• Worldwide safety approval:
UL 1577 (3750 Vrms/1 min.) and
CSA (pending), DIN EN 60747-5-2
(Option #060 only pending)
• Advanced sigma-delta (Σ-∆)
A/D converter technology
Applications
• Low-power inverter current
sensing
• Motor phase and rail current
sensing
• Switched mode power supply
signal isolation
• General purpose low-power
current sensing and monitoring
• General purpose analog signal
isolation
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this
component to prevent damage and /or degradation which may be induced by ESD.
Ordering Information
Specify part number followed by option number (if desired).
Example:
HCPL-7520-XXX
No option = Standard DIP package, 50 per tube.
300 = Gull Wing Surface Mount Option, 50 per tube.
500 = Tape and Reel Packaging Option.
060 = DIN EN 60747-5-2 Option.
Package Outline Drawings
HCPL-7520 Standard DIP Package
9.80 ± 0.25
(0.386 ± 0.010)
8
7
6
5
DATE CODE
A 7520
YYWW
1
1.19 (0.047) MAX.
2
3
4
7.62 ± 0.25
(0.300 ± 0.010)
6.35 ± 0.25
(0.250 ± 0.010)
1.78 (0.070) MAX.
4.70 (0.185) MAX.
0.51 (0.020) MIN.
2.92 (0.115) MIN.
0.20 (0.008)
0.33 (0.013)
1.080 ± 0.320
(0.043 ± 0.013)
0.65 (0.025) MAX.
2.54 ± 0.25
(0.100 ± 0.010)
5° TYP.
DIMENSIONS IN MILLIMETERS AND (INCHES).
2
HCPL-7520 Gull Wing Surface Mount Option 300 Outline Drawing
PAD LOCATION (FOR REFERENCE ONLY)
9.80 ± 0.25
(0.386 ± 0.010)
8
7
6
5
1.016 (0.040)
1.194 (0.047)
4.826 TYP.
(0.190)
A 7520
YYWW
6.350 ± 0.25
(0.250 ± 0.010)
9.398 (0.370)
9.960 (0.390)
1
2
3
4
1.194 (0.047)
1.778 (0.070)
1.780
(0.070)
MAX.
9.65 ± 0.25
(0.380 ± 0.010)
7.62 ± 0.25
(0.300 ± 0.010)
0.381 (0.015)
0.635 (0.025)
1.19
(0.047)
MAX.
4.19 MAX.
(0.165)
0.20 (0.008)
0.33 (0.013)
1.080 ± 0.320
(0.043 ± 0.013)
2.54
(0.100)
BSC
0.635 ± 0.130
(0.025 ± 0.005)
0.635 ± 0.25
(0.025 ± 0.010)
12° NOM.
DIMENSIONS IN MILLIMETERS (INCHES).
TOLERANCES (UNLESS OTHERWISE SPECIFIED): xx.xx = 0.01
xx.xxx = 0.005
LEAD COPLANARITY
MAXIMUM: 0.102 (0.004)
Solder Reflow Temperature Profile
300
PREHEATING RATE 3°C + 1°C/–0.5°C/SEC.
REFLOW HEATING RATE 2.5°C ± 0.5°C/SEC.
PEAK
TEMP.
245°C
PEAK
TEMP.
240°C
PEAK
TEMP.
230°C
2.5°C ± 0.5°C/SEC.
160°C
150°C
140°C
3°C + 1°C/–0.5°C
30
SEC.
30
SEC.
SOLDERING
TIME
200°C
TEMPERATURE (°C)
200
100
PREHEATING TIME
150°C, 90 + 30 SEC.
50 SEC.
TIGHT
TYPICAL
LOOSE
ROOM
TEMPERATURE
0
0
50
100
150
200
250
TIME (SECONDS)
3
Regulatory Information
The HCPL-7520 is pending
approval by the following
organizations:
DIN EN
Pending approval under DIN EN
60747-5-2 with V
IORM
= 891 V
PEAK
.
UL
Pending approval under UL 1577,
component recognition program
up to V
ISO
= 3750 V
RMS
expected
prior to product release. File
E55361.
CSA
Pending approval under CSA
Component Acceptance Notice
#5, File CA 88324 expected prior
to product release.
DIN EN 60747-5-2 Insulation Characteristics
[1]
Description
Installation classification per DIN EN 0110-1/1997-04, Table 1
for rated mains voltage
≤
150 V
rms
for rated mains voltage
≤
300 V
rms
for rated mains voltage
≤
600 V
rms
Climatic Classification
Pollution Degree (DIN EN 0110-1/1997-04)
Maximum Working Insulation Voltage
Input to Output Test Voltage, Method b
[2]
V
IORM
x 1.875 = V
PR
, 100% production test with t
m
= 1 sec, partial discharge <5 pC
Input to Output Test Voltage, Method a
[2]
V
IORM
x 1.5 = V
PR
, type and sample test, t
m
= 60 sec, partial discharge <5 pC
Highest Allowable Overvoltage (transient overvoltage t
ini
= 10 sec)
Safety-limiting values – maximum values allowed in the event of a failure.
Case Temperature
Input Current
[3]
Output Power
[3]
Insulation Resistance at T
S
, V
IO
= 500 V
V
IORM
V
PR
V
PR
V
IOTM
Symbol
Characteristic Unit
I – IV
I – III
I – II
55/100/21
2
891
1670
1336
6000
V
peak
V
peak
V
peak
V
peak
°C
mA
mW
Ω
T
S
175
I
S, INPUT
400
P
S, OUTPUT
600
R
S
>10
9
Notes:
1. Insulation characteristics are guaranteed only within the safety maximum ratings which must be ensured by protective circuits within the
application. Surface Mount Classifications is Class A in accordance with CECC00802.
2. Refer to the optocoupler section of the Isolation and Control Components Designer’s Catalog, under Product Safety Regulations section, (DIN EN
60747-5-2) for a detailed description of Method a and Method b partial discharge test profiles.
3. Refer to the following figure for dependence of P
S
and I
S
on ambient temperature.
OUTPUT POWER – P
S
, INPUT CURRENT – I
S
800
700
600
500
400
300
200
100
0
0
25
50
75 100 125 150 175 200
P
S
(mW)
I
S
(mA)
T
S
– CASE TEMPERATURE – °C
4
Insulation and Safety Related Specifications
Parameter
Minimum External Air Gap
(clearance)
Minimum External Tracking
(creepage)
Minimum Internal Plastic Gap
(internal clearance)
Tracking Resistance
(comparative tracking index)
Isolation Group
CTI
Symbol
L(101)
L(102)
Value
7.4
8.0
0.5
Unit
mm
mm
mm
Conditions
Measured from input terminals to output terminals,
shortest distance through air.
Measured from input terminals to output terminals,
shortest distance path along body.
Through insulation distance conductor to conductor,
usually the straight line distance thickness between the
emitter and detector.
DIN IEC 112 Part 1
Material Group (DIN EN 0110-1/1997-04)
>175
IIIa
V
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Supply Voltage
Steady-State Input Voltage
Two Second Transient Input Voltage
Output Voltage
Reference Input Voltage
Reference Input Current
Lead Solder Temperature
Solder Reflow Temperature Profile
Symbol
T
S
T
A
V
DD1_max
, V
DD1_max
V
IN+
, V
IN-
V
IN+
, V
IN-
V
OUT
V
REF
I
REF
See Package Outline Drawings section
Min.
–55
–40
0
–2.0
–6.0
–0.5
0.0
Max.
125
100
6
V
DD1
+ 0.5
-
V
DD1
+ 0.5
-
V
DD2
+ 0.5
-
V
DD2
+ 0.5
-
20
-
Units
°C
°C
V
V
V
V
V
mA
Note
260°C for 10 sec., 1.6 mm below seating plane
Recommended Operating Conditions
Parameter
Operating Temperature
Supply Voltage
Input Voltage (accurate and linear)
Input Voltage (functional)
Reference Input Voltage
Symbol
T
A
V
DD1
, V
DD2
V
IN+
, V
IN-
V
IN+
, V
IN-
V
REF
Min.
–40
4.5
–200
–2.0
4.0
Max.
85
5.5
200
2.0
V
DD2
Units
°C
V
mV
V
V
Note
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