Overview
The ISO7741FQDBQRQ1 is a high-performance, quad-channel digital isolator produced by Texas Instruments. This device is part of the ISO774x-Q1 family, which is specifically designed for automotive applications and is AEC-Q100 qualified. It features reinforced insulation and high electromagnetic immunity, making it suitable for use in harsh environments.
The ISO7741FQDBQRQ1 comes in a SSOP (DBQ) package with 16 pins and offers isolation ratings of up to 3000 VRMS according to UL 1577. It supports data rates of up to 100 Mbps and operates within a wide temperature range of –40°C to 125°C.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Isolation Rating | UL 1577 | 3000 VRMS (DBQ package) |
| Package Type | SSOP (DBQ) | 16 pins |
| Operating Temperature | Device temperature grade 1 | –40°C to 125°C |
| Data Rate | Maximum data rate | Up to 100 Mbps |
| Supply Voltage | VCC1 and VCC2 | 2.25 V to 5.5 VDC |
| Thermal Resistance | Junction-to-ambient thermal resistance (RθJA) | 109 °C/W (DBQ package) |
| Maximum Power Dissipation | Safety input, output, or total power | 1499 mW (DBQ package) |
| Certifications | Safety-related certifications | DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, GB 4943.1 |
Key Features
- Qualified for automotive applications and AEC-Q100 certified.
- High-speed data transfer up to 100 Mbps.
- Reinforced insulation with ratings up to 3000 VRMS (DBQ package) and 5000 VRMS (DW package).
- Low emissions and high electromagnetic immunity.
- Enable pins for output control and power reduction.
- Default output state: high for devices without suffix F and low for devices with suffix F if input power or signal is lost.
- Multiple package options: Extra-wide SOIC (DWW), wide-SOIC (DW), and QSOP (DBQ).
- Safety-related certifications including DIN EN IEC 60747-17, UL 1577, and others.
Applications
- Hybrid, electric, and powertrain systems (EV/HEV).
- Battery management systems (BMS).
- On-board chargers.
- Traction inverters.
- DC/DC converters.
- Inverter and motor control systems.
Q & A
- What is the ISO7741FQDBQRQ1 used for?
The ISO7741FQDBQRQ1 is a quad-channel digital isolator used in automotive applications, particularly in hybrid, electric, and powertrain systems.
- What are the key certifications of the ISO7741FQDBQRQ1?
The device is AEC-Q100 qualified and has safety-related certifications such as DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1.
- What is the maximum data rate supported by the ISO7741FQDBQRQ1?
The device supports data rates up to 100 Mbps.
- What are the package options available for the ISO7741FQDBQRQ1?
The device is available in Extra-wide SOIC (DWW), wide-SOIC (DW), and QSOP (DBQ) packages.
- What is the operating temperature range of the ISO7741FQDBQRQ1?
The device operates within a temperature range of –40°C to 125°C.
- What is the isolation rating of the ISO7741FQDBQRQ1 in the DBQ package?
The isolation rating is up to 3000 VRMS according to UL 1577.
- How does the enable pin function on the ISO7741FQDBQRQ1?
The enable pins (EN1 and EN2) control the output state, enabling the outputs when high or open and putting them in high-impedance state when low.
- What is the default output state if the input power or signal is lost?
The default output state is high for devices without the suffix F and low for devices with the suffix F.
- What are some typical applications of the ISO7741FQDBQRQ1 in automotive systems?
Typical applications include battery management systems, on-board chargers, traction inverters, DC/DC converters, and inverter and motor control systems.
- What is the maximum power dissipation for the ISO7741FQDBQRQ1 in the DBQ package?
The maximum power dissipation is 1499 mW.
