HCPL-788J Ver la hoja de datos (PDF) - HP => Agilent Technologies
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HCPL-788J Datasheet PDF : 20 Pages
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Isolation Amplifier with Short
Circuit and Overload Detection
Technical Data
HCPL-788J
Features
• Output Voltage Directly
Compatible with A/D
Converters (0 V to VREF)
• Fast (3 µs) Short Circuit
Detection with Transient
Fault Rejection
• Absolute Value Signal Out-
put for Overload Detection
• 1 µV/°C Offset Change vs.
Temperature
• SO-16 Package
• -40°C to +85°C Operating
Temperature Range
• 25 kV/µs Isolation Transient
Immunity
• Regulatory Approvals
(Pending): UL, CSA, VDE
0884 (891 Vpeak Working
Voltage)
Low Cost Three Phase Current Sensing with Short Circuit and Overload Detection
RSENSE1
ISOLATION BOUNDARY
1 VIN+
2 VIN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
VOUT 12
VREF 11
7
10
8 HCPL-788J 9
RSENSE2
M
3 PHASE
MOTOR
RSENSE3
ISOLATION BOUNDARY
1 VIN+
2 VIN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
VOUT 12
VREF 11
7
10
8 HCPL-788J 9
ISOLATION BOUNDARY
1 VIN+
2 VIN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
VOUT 12
VREF 11
7
10
8 HCPL-788J 9
+5 V
SHORT CIRCUIT FAULT
MICRO
CONTROLLER
A/D
CONVERTER
VREF
3 PHASE ABSOLUTE
VALUE OUTPUT
+
–
+
–
VTH
OVERLOAD
FAULT
Hewlett-Packard’s Isolation Amplifier with Short Circuit and Overload Detection makes motor phase
current sensing compact, affordable and easy-to-implement while satisfying worldwide safety and
regulatory requirements.
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.
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