HCPL-788J Datasheet, PDF (1/20 Pages) AVAGO TECHNOLOGIES LIMITED – Isolation Amplifier with Short Circuit and Overload Detection SO-16 Package

HCPL-788J
Isolation Amplifier with Short Circuit and Overload Detection
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
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
Features
x Output Voltage Directly Compatible with A/D
Converters (0 V to V )
REF
x Fast (3 μs) Short Circuit Detection with Transient Fault
Rejection
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-
5-2 (1230 Vpeak Working Voltage)
Low Cost Three Phase Current Sensing with Short Circuit and Overload Detection
R_SENSE1
ISOLATION BOUNDARY
1 V_IN+
2 V_IN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
V_OUT 12
V_REF 11
7
10
8 _HCPL-788J 9
R_SENSE2
M
3 PHASE
MOTOR
R_SENSE3
ISOLATION BOUNDARY
1 V_IN+
2 V_IN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
V_OUT 12
V_REF 11
7
10
8 _HCPL-788J 9
ISOLATION BOUNDARY
1 V_IN+
2 V_IN-
3
4
5
6
16
15
FAULT 14
ABSVAL 13
V_OUT 12
V_REF 11
7
10
8 _HCPL-788J 9
+5 V
SHORT CIRCUIT FAULT
MICRO
CONTROLLER
A/D
CONVERTER
V_REF
3 PHASE ABSOLUTE
VALUE OUTPUT
+
–
+
–
V_TH
OVERLOAD
FAULT
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.