Overview
The ISO7740FQDWRQ1 is a high-performance, quad-channel digital isolator from Texas Instruments, designed specifically for automotive applications. This device is part of the ISO774x-Q1 family, which is AEC-Q100 qualified and offers robust isolation and low emissions. It features a double capacitive silicon dioxide (SiO2) insulation barrier, providing high electromagnetic immunity and low power consumption. The device is suitable for various automotive systems, including hybrid, electric, and powertrain applications.
Key Specifications
| Parameter | Value | Unit | Package |
|---|---|---|---|
| Isolation Rating (VRMS) | 5700 (DWW), 5000 (DW), 3000 (DBQ) | VRMS | DWW, DW, DBQ |
| Device Temperature Range | -40°C to 125°C | °C | - |
| Maximum Power Dissipation | 2144 mW (DWW), 1499 mW (DW) | mW | DWW, DW |
| Supply Voltage | 2.5 V, 3.3 V, 5 V ±10% | V | - |
| Supply Current (Typical) | 1.2 mA to 7.8 mA (depending on supply voltage and mode) | mA | - |
| Package Options | Extra-wide SOIC (DWW-16), wide-SOIC (DW-16), QSOP (DBQ-16) | - | DWW, DW, DBQ |
| Package Size | 10.30mm × 14.0mm (DWW), 10.30mm × 7.50mm (DW), 4.90mm × 3.90mm (DBQ) | mm | DWW, DW, DBQ |
| Junction-to-Ambient Thermal Resistance | 58.3 °C/W (DWW), 83.4 °C/W (DW), 109 °C/W (DBQ) | °C/W | DWW, DW, DBQ |
Key Features
- Qualified for automotive applications with AEC-Q100 qualification.
- High-speed digital isolators with data rates up to 100 Mbps.
- Reinforced insulation ratings according to VDE, CSA, TUV, and CQC standards.
- Low emissions and high electromagnetic immunity.
- Extra-wide SOIC (DWW-16), wide-SOIC (DW-16), and QSOP (DBQ-16) package options.
- Safety-related certifications including DIN EN IEC 60747-17, UL 1577, IEC 61010-1, IEC 62368-1, IEC 60601-1, and GB 4943.1.
- Enable pins for high impedance output and power reduction.
- Default output is low for devices with the F suffix and high for devices without the F suffix if input power or signal is lost.
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 primary application of the ISO7740FQDWRQ1?
The ISO7740FQDWRQ1 is primarily used in automotive applications, including hybrid, electric, and powertrain systems.
- What are the package options available for the ISO7740FQDWRQ1?
The device is available in extra-wide SOIC (DWW-16), wide-SOIC (DW-16), and QSOP (DBQ-16) packages.
- What is the isolation rating of the ISO7740FQDWRQ1?
The isolation rating is 5700 VRMS for the DWW package, 5000 VRMS for the DW package, and 3000 VRMS for the DBQ package.
- What safety certifications does the ISO7740FQDWRQ1 have?
The device has certifications including 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 ISO7740FQDWRQ1?
The device supports data rates up to 100 Mbps.
- How does the enable pin function in the ISO7740FQDWRQ1?
The enable pin can be used to put the respective outputs in high impedance, which helps in multi-controller driving applications and reduces power consumption.
- What is the default output state if the input power or signal is lost?
The default output is low for devices with the F suffix and high for devices without the F suffix if the input power or signal is lost.
- What are the typical supply current values for the ISO7740FQDWRQ1?
The typical supply current values range from 1.2 mA to 7.8 mA depending on the supply voltage and mode.
- What is the maximum power dissipation for the ISO7740FQDWRQ1?
The maximum power dissipation is 2144 mW for the DWW package and 1499 mW for the DW package.
- What are the thermal resistance values for the ISO7740FQDWRQ1?
The junction-to-ambient thermal resistance is 58.3 °C/W for the DWW package, 83.4 °C/W for the DW package, and 109 °C/W for the DBQ package.
