HCPL-788J Avago Technologies US Inc., HCPL-788J Datasheet

OPTOCOUPLR AMP CURR SENSE 16SOIC

HCPL-788J

Manufacturer Part Number
HCPL-788J
Description
OPTOCOUPLR AMP CURR SENSE 16SOIC
Manufacturer
Avago Technologies US Inc.
Series
-r
Type
Current Sensorr
Datasheets

Specifications of HCPL-788J

Package Type
SOIC
Operating Supply Voltage (typ)
5V
Voltage - Isolation
3750Vrms
Input Type
DC
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.295", 7.50mm Width)
No. Of Amplifiers
1
Input Offset Voltage
3mV
Bandwidth
30kHz
Isolation Voltage
3.75kV
Supply Voltage Range
± 4.5V To ± 5.5V
Supply Current
20mA
Amplifier Case Style
SOIC
No. Of Pins
16
Rohs Compliant
No
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HCPL-788J
Manufacturer:
AVAGO
Quantity:
6 800
Part Number:
HCPL-788J#300E
Manufacturer:
AVAGO
Quantity:
15 000
Part Number:
HCPL-788J#500
Manufacturer:
AVAGO
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25 000
Part Number:
HCPL-788J#500E
Manufacturer:
AVAGO
Quantity:
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Part Number:
HCPL-788J-000E
Manufacturer:
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HCPL-788J
Isolation Amplifier with Short Circuit and Overload Detection
Data Sheet
Description
Avago’s Isolation Amplifier with Short Circuit and Over-
load Detection makes motor phase current sensing com-
pact, affordable and easy-to-implement while satisfying
worldwide safety and regulatory requirements.
Applications
x Motor phase and rail current sensing
x Power inverter current and voltage sensing
x Industrial process control
x Data acquisition systems
x General purpose current and voltage sensing
x Traditional current transducer replacements
Low Cost Three Phase Current Sensing with Short Circuit and Overload Detection
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
R
SENSE1
M
R
SENSE3
Lead (Pb) Free
RoHS 6 fully
compliant
3 PHASE
MOTOR
R
SENSE2
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.
ISOLATION BOUNDARY
ISOLATION BOUNDARY
ISOLATION BOUNDARY
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
V
V
V
V
V
V
IN+
IN-
IN+
IN-
IN+
IN-
HCPL-788J
HCPL-788J
HCPL-788J
ABSVAL
ABSVAL
ABSVAL
FAULT
FAULT
FAULT
V
V
V
V
V
V
OUT
REF
OUT
REF
OUT
REF
16
15
14
13
12
11
10
16
15
14
13
12
11
10
16
15
14
13
12
11
10
9
9
9
+5 V
3 PHASE ABSOLUTE
+
VALUE OUTPUT
SHORT CIRCUIT FAULT
V
TH
+
Features
x Output Voltage Directly Compatible with A/D
x Fast (3 μs) Short Circuit Detection with Transient Fault
x Absolute Value Signal Output for Overload Detection
x 1 μV/°C Offset Change vs. Temperature
x SO-16 Package
x -40°C to +85°C Operating Temperature Range
x 25 kV/μs Isolation Transient Immunity
x Regulatory Approvals: UL, CSA, IEC/EN/DIN EN 60747-
OVERLOAD
FAULT
Converters (0 V to V
Rejection
5-2 (1230 Vpeak Working Voltage)
CONTROLLER
V
CONVERTER
REF
MICRO
A/D
REF
)

HCPL-788J Summary of contents

Page 1

... OUT 5 V REF HCPL-788J CAUTION 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. Features x Output Voltage Directly Compatible with A/D Converters ( Fast (3 μs) Short Circuit Detection with Transient Fault Rejection x Absolute Value Signal Output for Overload Detection x 1 μ ...

Page 2

... HCPL-788J. A larger analog output volt- age is created on the other side of the HCPL-788J’s opti- cal isolation barrier. The output voltage is proportional to the motor current and can be connected directly to a single-supply A/D converter ...

Page 3

... Dimensions in inches (millimeters) Note: Initial and continued variation in the color of the HCPL-788J’s white mold compound is normal and does not affect device performance or reliability. Note: Floating lead protrusion is 0.25 mm (10 mils) max. 3 Surface ...

Page 4

... Output IC Junction-to-Case Thermal Resistance Recommended Pb-Free IR Profile Recommended reflow condition as per JEDEC Standard, J-STD-020 (latest revision). Non-Halide Flux should be used. Regulatory Information The HCPL-788J has been approved by the following organizations: IEC/EN/DIN EN 60747-5-2 Approved under: IEC 60747-5-2:1997 + A1:2002 EN 60747-5-2:2001 + A1:2002 DIN EN 60747-5-2 (VDE 0884 Teil 2):2003-01. ...

Page 5

IEC/EN/DIN EN 60747-5-2 Insulation Characteristics* Description Installation classification per DIN VDE 0110/1.89, Table 1 for rated mains voltage ≤ 300 V rms for rated mains voltage ≤ 600 V rms for rated mains voltage ≤ 1000 V rms Climatic Classification ...

Page 6

Insulation and Safety Related Specifications Parameter Symbol Minimum External Air Gap L(101) (Clearance) Minimum External Tracking L(102) (Creepage) Minimum Internal Plastic Gap Tracking Resistance CTI Isolation Group Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Supply Voltages Steady-State Input Voltage ...

Page 7

DC Electrical Specifications Unless otherwise noted, all typicals and figures are at the nominal operating conditions and T = 25°C; all Minimum/Maximum specifications are within the Recommended Operating DD1 DD2 ...

Page 8

AC Electrical Specifications Unless otherwise noted, all typicals and figures are at the nominal operating conditions and T = 25°C; all Minimum/Maximum specifications are within the Recommended Operating DD1 DD2 ...

Page 9

... IN both pins 1 and 2 with respect to pin 8. 12. The signal-to-noise ratio of the HCPL-788J can be improved with the addition of an external low pass filter to the output. See Frequently Asked Question #4.2 in the Applications Information Section at the end of this data sheet. 13. As measured from 50 ...

Page 10

TYPICAL 600.0 MAX 400.0 200.0 0 -200.0 -400.0 -600.0 -800.0 -40 - TEMPERATURE – DEG C Figure 3. Input offset voltage change vs. temperature. 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -300 ...

Page 11

TEMPERATURE – °C Figure 12. Bandwidth vs. temperature. 300 300 mV -300 (PIN ...

Page 12

... V 5 DD1 7 V DD1 8 GND 1 Figure 21. Internal block diagram 4.7 kΩ 14 FAULT 13 ABSVAL 12 V OUT 11 V REF HCPL-788J 0.1 μF 10,15 V DD2 0.1 μ HCPL-788J DECODER V 11 REF V 12 OUT D/A LPF 13 ABSVAL RECTIFIER FAULT DD2 V 10 DD2 GND 9 2 GND 16 2 ...

Page 13

... This single DC signal and a threshold comparator can indicate motor overload conditions be- fore dam age to the motor or drive occur. Figure 22 shows the ABSVAL output when 3 HCPL-788Js are used to mon- itor a sinusoidal 60 Hz current. Figures 23 and 24 show the ABSVAL output when only the 3 phases are monitored, respectively. The HCPL-788J’ ...

Page 14

... Although the application cir cuit is relatively simple, a few re c ommendations should be followed to ensure optimal performance. The power supply for the HCPL-788J is most often ob- tained from the same supply used to power the power transistor gate drive circuit dedicated supply is re- quired, in many cases it is possible to add an additional winding on an existing trans former ...

Page 15

... C4, and C6) should be located as close as possible to the pins of the HCPL-788J. The bypass capacitors are required because of the high-speed digital nature of the signals inside the HCPL-788J. A 0.01 μF bypass capacitor (C2) is also recommended at the input due to the switched-ca- pacitor nature of the input circuit. The input bypass ca- ...

Page 16

... Smaller sense resistance decreases power dissipation, while larg- er sense resistance can improve circuit accuracy by utiliz- ing the full input range of the HCPL-788J. The first step in selecting a sense resistor is determin- ing how much current the resistor will be sens ing. The ...

Page 17

... This allows a single pair of wires or PC board traces to connect the HCPL-788J circuit to the sense resistor. By referencing the input circuit to the neg- ative side of the sense resistor, any load current induced ...

Page 18

... Select the sense resistor so that it will have less than 5 V drop when short circuits occur. The only other requirement is to shut down the drive before the sense resistor is damaged or its solder joints melt. This ensures that the input of the HCPL-788J cannot be damaged by sense resistors going open-circuit. ...

Page 19

... Yes. Some noise energy exists beyond the 30 kHz bandwidth of the HCPL-788J. An external RC low pass filter can be used to improve the signal to noise ratio. For example, a 680 Ω ...

Page 20

... V to pins 10, 11, and 15 and connecting -2 pins 9 and 16 with 0.1 μF bypass capacitors from +2 -2.5 V and from -2 ground. Note that FAULT cannot swing above 2 this case level shifter may be needed. Alternately, a single 5 V supply could be power the HCPL-788J which could drive an op amp configured to subtract 1 ...

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