ISO7731-Q1

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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 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
  • 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.

The ISO7730-Q1 device has all three channels in the same direction and the ISO7731-Q1 device has two forward and one reverse-direction channel. If the input power or signal is lost, the default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.

Used in conjunction with isolated power supplies, this family of devices helps prevent noise currents on data buses, such as CAN and LIN, 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 the ISO773x-Q1 device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO773x-Q1 family of devices is available in 16-pin wide-SOIC and QSOP packages.

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Technical documentation

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Type Title Date
* Datasheet ISO773x-Q1 High-Speed, Robust-EMC Reinforced Triple-Channel Digital Isolators datasheet (Rev. C) May 02, 2019
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
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
Technical articles What are isolated digital inputs? Mar. 08, 2019
Application notes Considerations for Selecting Digital Isolators Jul. 24, 2018
User guides 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 BOARDS 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 MODELS Download
SLLM326A.ZIP (62 KB) - IBIS Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

Reference designs

REFERENCE DESIGNS Download
Resolver-Based Motor Control Reference Design With a BLDC Motor and C2000™ MCU
TIDA-01507 — The TIDA-01507 reference design is a generic development platform for motor-control applications. Control for the system comes from the C2000™ TMS320F28069M microcontroller (MCU). The 3-phase BLDC gte driver, DRV8305-Q1 drives a BLDC motor whereas the resolver-to-digital converter PGA411-Q1 (...)
document-generic Schematic document-generic User guide
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 document-generic User guide
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 document-generic User guide
REFERENCE DESIGNS Download
Automotive Reinforced Isolation CAN Reference Design
TIDA-01255 — The TIDA-01255 design is built for isolated CAN communication, which is widely used in automotive environments. In hybrid and electric vehicles (HEV/EVs), a complete high-voltage network is floating with respect to the chassis ground. Isolation is required for the power and communication channels (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

Ordering & quality

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