ISO7831

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Highest isolation rating, triple-channel, 2/1, reinforced digital isolator

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Product details

Parameters

Integrated isolated power No Number of channels (#) 3 Forward/reverse channels 2/1 Isolation rating (Vrms) 5700 Data rate (Max) (Mbps) 100 Rating Catalog Surge voltage capability (Vpk) 12800 Current consumption per channel (DC) (Typ) (mA) 1.03 Current consumption per channel (1 Mbps) (Typ) (mA) 1.67 Operating temperature range (C) -55 to 125 Default output High, Low Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.25 Propagation delay (Typ) (ns) 10.7 open-in-new Find other Digital isolators

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 SOIC (DWW) 16 178 mm² 10.3 x 17.25 open-in-new Find other Digital isolators

Features

  • Signaling Rate: Up to 100 Mbps
  • Wide Supply Range: 2.25 V to 5.5 V
  • 2.25 V to 5.5 V Level Translation
  • Wide Temperature Range: –55°C to 125°C
  • Low Power Consumption, Typical 1.7 mA per
    Channel at 1 Mbps
  • Low Propagation Delay: 11 ns Typical
    (5-V Supplies)
  • Industry leading CMTI (min): ±100 kV/µs
  • Robust Electromagnetic Compatibility (EMC)
  • System-Level ESD, EFT, and Surge Immunity
  • Low Emissions
  • Isolation Barrier Life: > 40 Years
  • SOIC-16 Wide Body (DW) and Extra-Wide Body
    (DWW) Package Options
  • Safety-Related Certifications:
    • 8000 VPK Reinforced Isolation per DIN V VDE
      V 0884-10 (VDE V 0884-10):2006-12
    • 5.7 kVRMS Isolation for 1 Minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC
      60950-1 and IEC 60601-1 End Equipment
      Standards
    • CQC Certification per GB4943.1-2011
    • TUV Certification per EN 61010-1 and EN
      60950-1
    • All DW Package Certifications Complete;
      DWW Package Certifications Complete per
      UL, VDE, TUV and Planned for CSA and CQC
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Description

The ISO7831x device is a high-performance, 3-channel digital isolator with 8000-VPK isolation voltage. This device has reinforced isolation certifications according to VDE, CSA, TUV and CQC. The isolator provides high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS or LVCMOS digital I/Os.

Each isolation channel has a logic input and output buffer separated by silicon dioxide (SiO2) insulation barrier. This device comes with enable pins which can be used to put the respective outputs in high impedance for multi-master driving applications and to reduce power consumption. The ISO7831x device has two forward and one reverse-direction channels. If the input power or signal is lost, the default output is high for the ISO7831 device and low for the ISO7831F device. See Device Functional Modes for further details.

Used in conjunction with isolated power supplies, this device helps prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry. Through innovative chip design and layout techniques, electromagnetic compatibility of ISO7831x has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. ISO7831x is available in a 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.

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Technical documentation

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Type Title Date
* Datasheet ISO7831x High-Performance, 8000-VPK Reinforced Triple Digital Isolators datasheet (Rev. B) Jun. 28, 2016
Technical articles How to select the right digital isolator for your design Oct. 21, 2020
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators Oct. 12, 2020
More literature TUV certificate for isolation devices (Rev. I) Mar. 14, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
Technical articles Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
More literature CSA Certification (Rev. P) Nov. 19, 2019
More literature VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. N) Nov. 13, 2019
White paper Isolation in AC Motor Drives: Understanding the IEC 61800-5-1 Safety Standard (Rev. A) Sep. 19, 2019
More literature CQC Certification (Rev. F) Sep. 13, 2019
More literature UL Certification (Rev. N) Jul. 30, 2019
Technical articles Staying on budget: How digital isolators are transforming field transmitters May 24, 2019
White paper Direct-drive configuration for GaN devices (Rev. A) Nov. 19, 2018
Application note Pushing the envelope with high-performance digital-isolation technology (Rev. A) Aug. 22, 2018
Application note Digital Isolator Design Guide (Rev. B) Aug. 01, 2018
Application note Considerations for Selecting Digital Isolators Jul. 24, 2018
White paper Isolation in solar power converters: Understanding the IEC62109-1 safety standar (Rev. A) May 18, 2018
Application note How to reduce radiated emissions of digital isolators for systems with RF module Mar. 26, 2018
Application note Isolation Glossary (Rev. A) Sep. 19, 2017
Application note 4Q 2015 Analog Applications Journal Oct. 30, 2015
Application note Pushing the envelope with high-performance digital-isolation technology Oct. 30, 2015
User guide ISO784xx Quad-Channel Digital Isolator EVM User Guide Oct. 17, 2014
White paper Understanding electromagnetic compliance tests in digital isolators Oct. 17, 2014
White paper High-voltage reinforced isolation: Definitions and test methodologies Oct. 16, 2014

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
49
Description

The ISO7842 provides galvanic isolation up to 5700 VRMS for 1 minute per UL and 8000 VPK per VDE. This device has four isolated channels comprised of a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, this (...)

Features
  • 8000 VPK isolation per VDE0884-10 Ed 2.0
  • 5.7 kVRMS isolation for 1 minute per UL 1577
  • Signaling rate: 100 Mbps
  • Isolation barrier life: > 25 years
DAUGHTER CARD Download
199
Description
The LMG34XX-BB-EVM is an easy to use breakout board to configure any LMG34XX half bridge board, such as the LMG3410-HB-EVM, as a synchronous buck converter.  By providing a power stage, bias power and logic circuitry this EVM allows for quick measurements of the GaN device switching.  This (...)
Features
  • Input voltage operates up to 600V
  • Simple open loop design to evaluate performance of LMG3410R070
  • Single PWM input on board for PWM signal with 50 ns dead time
  • Convenient probe points for logic and power stage measurements with oscilloscope probes that have short ground spring probes

Design tools & simulation

SIMULATION MODEL Download
SLLM286B.ZIP (104 KB) - IBIS Model
SIMULATION MODEL Download
SLLM288.IBS (243 KB) - IBIS Model

Reference designs

REFERENCE DESIGNS Download
Bidirectional high density GaN CCM totem pole PFC using C2000™ MCU
TIDM-02008 This reference design is a 3.-kW bidirectional interleaved continuous conduction mode (CCM) totem-pole (TTPL) bridgeless power factor correction (PFC) power stage using a C2000™ real-time controller and LMG3410R070 gallium nitride (GaN) with integrated driver and protection (...)
document-generic Schematic
REFERENCE DESIGNS Download
High efficiency GaN CCM totem pole bridgeless Power Factor Correction (PFC) reference design
TIDM-1007 — Interleaved Continuous Conduction Mode (CCM) Totem Pole (TTPL) Bridgeless Power Factor Correction (PFC) is an attractive power topology with use of high band-gap GaN devices, because of high efficiency and reduced size of the power supply. This design illustrates a method to control this power stage (...)
document-generic Schematic
REFERENCE DESIGNS Download
High Efficiency and High Power Density 1kW Resonant Converter Reference Design with TI HV GaN FET
PMP20637 — This reference design is a high efficiency, high power density and light weight resonant converter reference design. It converts a 390V input to a 48V/1kW output. The PMP20637 power stage has over 140W/in^3 power density. The whole board weight is less than 210g. With fixed 950kHz switching (...)
document-generic Schematic
Design files
REFERENCE DESIGNS Download
99% Efficient 1kW GaN-based CCM Totem-pole Power Factor Correction (PFC) Converter Reference Design
PMP20873 — Continuous-Conduction-Mode (CCM) Totem-pole power factor correction (PFC) is a simple but efficient power converter.  To achieve 99% efficiency, there are many design details that need to be taken into account.  The PMP20873 reference design uses TI’s 600VGaN  power stage (...)
document-generic Schematic
REFERENCE DESIGNS Download
Current Sense Reference Design for High-Switching Transient Three-Phase Inverter for Servo Drives
TIDA-01455 — The TIDA-01455 is a reinforced isolated, in-line, shunt-based, precision-phase current sensing reference design for three-phase inverters. One of the challenges with GaN or SiC inverters at high PWM switching is accurate phase current sensing across the shunt in presence of noise due to the high PWM (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options
SOIC (DWW) 16 View options

Ordering & quality

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