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HCPL-788J
Isolation Amplifier with Short Circuit and Overload Detection
Description
The HCPL-788J isolation amplifier is designed for current sensing in electronic motor drives. In a typical implementation, motor currents flow through an external resistor and the resulting analog voltage drop is sensed by the HCPL-788J. A larger analog output voltage is created on the other side of the HCPL-788J's optical isolation barrier. The output voltage is proportional to the motor current and can be connected directly to a single-supply A/D converter. A digital over-range output (FAULT) and an analog rectified output (ABSVAL) are also provided. The wire OR-able over-range output (FAULT) is useful for quick detection of short circuit conditions on any of the motor phases. The wire-OR-able rectified output (ABSVAL), simplifies measurement of motor load since it performs polyphase rectification. Since the common-mode voltage swings several hundred volts in tens of nanoseconds in modern electronic motor drives, the HCPL-788J was designed to ignore very high common-mode transient slew rates (10 kV/ms).
HCPL-788J is on EBV's motor control reference design.
Features
- Output Voltage Directly Compatible with A/D Converters (0 V to VREF)
- Fast (3 us) Short Circuit Detection with Transient Fault Rejection
- Absolute Value Signal Output for Overload Detection
- 1 uV/ degrees C Offset Change vs. Temperature
- SO-16 Package
- -40 degrees C to 85 degrees C Operating Temperature Range
- 25 kV/us Isolation Transient Immunity
- Regulatory Approvals: UL, CSA, IEC/EN/DIN EN 60747-5-2 (1230Vpeak Working Voltage)
- Options available are:
XXXE = Lead Free Option
Applications
- Automatic Meter Reading(AMR)
- Powerline Modem
- Home Automation / Control
- Security and Surveillance
- General Purpose Isolated Transceiver
- Internet Appliances
Benefits
- Better Resolution
- Better Display Contrast
- Pin-to-pin compatibility
- Wide Message Display Panel With Multi lines is achievable
- Better Operating Cost
Documents
Data Sheets & Technical Specifications
- Data Sheet - HCPL-788J, Isolation Amplifier with Short Circuit and Overload Detection(205 KB,PDF)
- Options Data Sheet - Option 020 Optocoupler Option for 5000 V rms 1 Minute Requirement(85 KB,PDF)
- Options Data Sheet - Option 060 IEC EN DIN EN 6074752 Option for Plastic Optocouplers(86 KB,PDF)
- Options Data Sheet - Option 300, Gull Wing Surface Mount Option for Optocouplers(99 KB,PDF)
- Options Data Sheet - Option 500 - Tape and Reel Packaging Option for Optocouplers(93 KB,PDF)
- Options Data Sheet - Shipping Tube Dimension for Optocouplers (Plastic/Solid State Relay)(141 KB,PDF)
- Selection Guide - Avago Technologies Optoisolation and Optical Sensor Products Selection Catalog(3008 KB,PDF)
- Selection Guide - Optoisolation Products Filo Selection Guide(1288 KB,PDF)
- White Paper - Automotive Isolation Amplifier for Voltage Sensing(132 KB,PDF)
- White Paper - Calculate the LED Lifetime Performance in Optocouplers to Predict Reliability(238 KB,PDF)
- White Paper - Building a Safe and Robust Industrial System with Avago Technologies' Optocouplers(319 KB,PDF)
- White Paper - Optimizing High-Voltage Common Mode Rejection Performance of the ACPL-x6xL Ultra-Low Power Optocouplers(91 KB,PDF)
- White Paper - Optocouplers in Industrial Communication(277 KB,PDF)
Application Notes
- Application Brief - AB 102: Optoisolation Product Part Number System(97 KB,PDF)
- Application Note - AN 1043 Common Mode Noise: Sources Solutions(143 KB,PDF)
- Application Note - AN 1059, High CMR Isolation Amplifier for Current Sensing, Application Note AN 1059(87 KB,PDF)
- Application Note - AN 1074 Optocoupler Input Output Endurance Voltage(125 KB,PDF)
- Application Note - AN 1078; Designing with Avago Technologies Isolation Amplifiers(312 KB,PDF)
- Application Note - AN 1087; Thermal Data for Avago Optocouplers(259 KB,PDF)
- Application Note - AN 1252 Variable Speed Drive Applications the Consumer Market(87 KB,PDF)
- Application Note - AN 1253 Variable Speed Drive Applications the HighPower Industrial Market(93 KB,PDF)
- Application Note - AN 1254 Variable Speed Drive Applications the Power Industrial Market(94 KB,PDF)
- Application Note - AN 1357; Overview of High Performance Analog Optocouplers(119 KB,PDF)
- Application Note - AN 5121 Isolation Amplifiers HallEffect Device For Motor Control Current Sensing Applications(227 KB,PDF)
- Application Note - AN 5431; Miniature Iso-Amp Rises to the Challenge of Sensing Motor Phase Current(540 KB,PDF)
- Application Note - AN 5476; Recommended Soldering Profile for Lead-Free Plastic Optocouplers and Solid State Relays(98 KB,PDF)
- Application Note - SN 101 Overview Technologies Isolation Products for Motor Control Applications(151 KB,PDF)
Design & Reference Guides
Obsolescence Notices
Product Change Notices
- Product Changes Notice (PCN) - CCNPOC#82: Epitaxial Reactor Transfer for LEDs(37 KB,PDF)
- Product Changes Notice (PCN) - CCNPOC#86 Manufacturing location address change for SO-16 family of devices(77 KB,PDF)
- Product Changes Notice (PCN) - CCNPOC#87 Alternative manufacturing location inclusive of testing change for SO-16 family of devices(77 KB,PDF)
- Product Changes Notice (PCN) - PCN: A03-001-32002150-0A, Sept. 2003(303 KB,PDF)
- Product Changes Notice (PCN) - PCN: A05-001-32002150-0A, Mar. 2005(274 KB,PDF)
- Product Changes Notice (PCN) - PCN: A05-001-475179-0A, JUL. 2005(374 KB,PDF)
- Product Changes Notice (PCN) - PCN: V06-002-32002150-0A, May 2006(34 KB,PDF)
- Product Changes Notice (PCN) - PCN: V07-003-32002150-0A, Apr. 2007(19 KB,PDF)
- Product Changes Notice (PCN) - PCN: V07-003-32002150-0B(19 KB,PDF)
- Product Changes Notice (PCN) - V07-010-32002150-0E(403 KB,PDF)
- Product Changes Notice (PCN) - V09-001-32002150-0A, Jan. 2009(32 KB,PDF)
- Product Changes Notice (PCN) - V11-001-32002150-0A(23 KB,PDF)
- Product Changes Notice (PCN) - V11-001-32002150-0B(23 KB,PDF)
Quality & Reliability
