ISO7741FQDWWRQ1 Description

According to UL 1577, the ISO7741FQDWWRQ1 automotive device is a high-performance, quad-channel digital isolator having isolation ratings of 5700 VRMS (DWW package), 5000 VRMS (DW package), and 3000 VRMS (DBQ package). The reinforced insulation ratings for this series of devices come from the VDE, CSA, TUV, and CQC.

The ISO7741FQDWWRQ1 device isolates CMOS or LVCMOS digital I/Os while offering strong electromagnetic immunity, low emissions, and low power consumption. A double capacitive silicon dioxide (SiO2) insulation barrier separates the logic input and output buffers of each isolation channel. These devices have enable pins that can be utilized to reduce power consumption and set the corresponding outputs in high impedance for multi-master driving applications. The devices ISO7740-Q1 and ISO7741-Q1 each have three forward-direction channels and one reverse-direction channel, whereas ISO7742-Q1 has two forward-direction channels and two reverse-direction channels. For devices without the suffix F and for devices with the suffix F, the default output is high in the event that the input power or signal is lost.

ISO7741FQDWWRQ1 Features

• Wide supply range: 2.25 V to 5.5 V

• 2.25-V to 5.5-V level translation

• Default output high (ISO774x ) and low (ISO774xF) options

• Low power consumption, typical 1.5 mA per channel at 1 Mbps

• Low propagation delay: 10.7 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

• Extra-wide SOIC (DWW-16), 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

• 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

– Documentation available to aid functional safety system design: ISO7740-Q1, ISO7741-Q1, ISO7742-Q1

• 100 Mbps data rate

• Robust isolation barrier:

– >100-year projected lifetime at 1500 VRMS working voltage

– Up to 5700 VRMS isolation rating

– Up to 12.8 kV surge capability

– ±100 kV/μs typical CMTI

ISO7741FQDWWRQ1 Applications

• Hybrid, electric and powertrain system (EV/HEV)

– Battery management system (BMS)

– On-board charger

– Traction inverter

– DC/DC converter

– Inverter and motor control