ISO7731-Q1

ACTIVE

Automotive, robust EMC, 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) 5000, 3000 Data rate (Max) (Mbps) 100 Rating Automotive Surge voltage capability (Vpk) 12800, 6400 Current consumption per channel (DC) (Typ) (mA) 0.97 Current consumption per channel (1 Mbps) (Typ) (mA) 1.53 Operating temperature range (C) -40 to 125 TI functional safety category Functional Safety-Capable 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 SSOP (DBQ) 16 29 mm² 4.9 x 6 open-in-new Find other Digital isolators

Features

  • Qualified for automotive applications
  • AEC-Q100 Qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
  • Functional Safety-Capable
  • 100 Mbps data rate
  • Robust isolation barrier:
    • >100-year projected lifetime at 1500 VRMS working voltage
    • Up to 5000 VRMS isolation rating
    • Up to 12.8 kV surge capability
    • ±100 kV/µs typical CMTI
  • Wide supply range: 2.25 V to 5.5 V
  • 2.25-V to 5.5-V Level translation
  • Default output high (ISO773x) and low (ISO773xF) options
  • Low power consumption, typical 1.5 mA per channel at 1 Mbps
  • Low propagation delay: 11 ns Typical (5-V Supplies)
  • Robust electromagnetic compatibility (EMC)
    • System-level ESD, EFT, and surge immunity
    • ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
    • Low emissions
  • Wide-SOIC (DW-16) and QSOP (DBQ-16) package options
  • Safety-related certifications:
    • DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • CSA, CQC and TUV certifications
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Description

The ISO773x-Q1 devices are high-performance, triple-channel digital isolators with 5000 VRMS (DW package) and 3000 VRMS (DBQ package) isolation ratings per UL 1577.

This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC.

The ISO773x-Q1 family of devices 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 a double capacitive 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.

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Technical documentation

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Type Title Date
* Data sheet ISO773x-Q1 High-Speed, Robust-EMC Reinforced Triple-Channel Digital Isolators datasheet (Rev. D) Oct. 15, 2020
Certificate TUV Certificate for Isolation Devices (Rev. J) Aug. 23, 2021
Certificate CQC Certification (Rev. G) Aug. 19, 2021
Certificate CSA Certification (Rev. Q) Jun. 14, 2021
Certificate VDE certificate for reinforced isolation for DIN VDE V 0884-11:2017-01 (Rev. O) Jun. 14, 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen Jun. 11, 2021
Application note How to Replace Optocouplers with Digital Isolators in Standard Interface Circuit (Rev. A) May 19, 2021
User guide Universal Digital Isolator Evaluation Module Mar. 04, 2021
Certificate UL Certification (Rev. O) Feb. 03, 2021
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. A) Dec. 07, 2020
Technical article How to select the right digital isolator for your design Oct. 21, 2020
Functional safety information ISO7731-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA Jun. 18, 2020
Technical article Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
Technical article Staying on budget: How digital isolators are transforming field transmitters May 24, 2019
Technical article What are isolated digital inputs? Mar. 08, 2019
Application note Considerations for Selecting Digital Isolators Jul. 24, 2018
User guide ISO77xx Triple/Quad Digital Isolator Evaluation Module User's Guide May 05, 2016

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
29
Description

DIGI-ISO-EVM is an evaluaiton module used to evaluate any of the TI signle-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin NB SOIC (D), 8-pin WB SOIC (DWV), 16-pin WB SOIC (DW), 16-pin ultra WB SOIC (DWW) and 16-pin QSOP (...)

Features
  • Any TI digital isolator can be evaluated
  • Supports single-channel, dual-channel, triple-channel, quad-channel and six-channel devices
  • Supports D, DWV, DW, DWW and DBQ packages
  • Various Berg pins provided for easy testing
EVALUATION BOARD Download
document-generic User guide
49
Description
The ISO7741EVM is an evaluaiton module (EVM) to evaluate the ISO7741. The ISO7741 is a high-performance, reinforced quad-channel digital isolator in a wide-body SOIC package (package code DW). The EVM features enough test points and jumber options for you to evaluate the (...)
Features
  • High-speed, robust EMC quad-channel digital isolator
  • Wide supply & level translation range: 2.25 V to 5.5 V
  • High signaling rate: Up to 100 Mbps
  • Low propagation delay: 11 ns typical (5-V supplies)
  • Isolation barrier life > 100 years

Design tools & simulation

SIMULATION MODEL Download
SLLM326A.ZIP (62 KB) - IBIS Model
SIMULATION MODEL Download
SLLM479.ZIP (195 KB) - PSpice Model

Reference designs

REFERENCE DESIGNS Download
98.6% Efficiency, 6.6-kW Totem-Pole PFC Reference Design for HEV/EV Onboard Charger
TIDA-01604 — This reference design functions from a base of silicon carbide (SiC) MOSFETs that are driven by a C2000 microcontroller (MCU) with SiC-isolated gate drivers. The design implements three-phase interleaving and operates in continuous conduction mode (CCM) to achieve a 98.46% efficiency at a 240-V (...)
document-generic Schematic
REFERENCE DESIGNS Download
Automotive high voltage, high power motor driver reference design for HVAC compressor
TIDA-01418 — This brushless DC (BLDC) motor reference design controls an automotive HVAC (heating, ventilation, and air conditioning) compressor by using the UCC27712-Q1 high-side and low-side gate driver followed by discrete insulated-gate bipolar transistor (IGBT) half bridges. This reference design uses TI's (...)
document-generic Schematic
REFERENCE DESIGNS Download
Automotive Reinforced Isolation CAN Reference Design
TIDA-01255 — This reference design is built for isolated CAN communication, which is widely used in automotive environments. In hybrid and electric vehicles (HEV/EVs), a high-voltage network is floating with respect to the chassis ground. Isolation is required for the power and communication channels (...)
document-generic Schematic

CAD/CAE symbols

Package Pins Download
SOIC (DW) 16 View options
SSOP (DBQ) 16 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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