Overview
The ISOW1044DFMR, produced by Texas Instruments, is a galvanically-isolated Controller Area Network (CAN) transceiver. This device integrates an isolated DC-DC converter, eliminating the need for a separate isolated power supply in space-constrained designs. It is designed to meet the stringent requirements of industrial and automotive applications, offering high isolation, low emissions, and robust protection features.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -40°C to 125°C | °C |
| Supply Voltage Range | 4.5 V to 5.5 V | V |
| Logic Supply Voltage Range | 1.71 V to 5.5 V | V |
| Isolation Rating | 5000 VRMS / 1500 VPK | VRMS / VPK |
| Package Type | 20-pin DFM (SOIC-20 footprint compatible) | |
| Body Size (Nominal) | 12.83 mm x 7.5 mm | mm |
| ESD Protection (HBM) | ±12 kV | kV |
| ESD Protection (IEC 61000-4-2) | ±8 kV | kV |
| CMTI (Common Mode Transient Immunity) | 100 kV/µs (typical) | kV/µs |
| Power Up Time | 5 ms | ms |
| Maximum Power Dissipation (Both Sides) | 1060 mW | mW |
Key Features
- Galvanic isolation with 5000 VRMS / 1500 VPK rating, supporting both reinforced and basic isolation options.
- Integrated isolated DC-DC converter, eliminating the need for a separate isolated power supply.
- High common-mode transient immunity (CMTI) of 100 kV/µs (typical).
- Robust ESD protection: HBM ±12 kV and IEC 61000-4-2 contact discharge ±8 kV.
- Operating temperature range from -40°C to 125°C.
- Current limit and thermal shutdown protection.
- Standby mode and wake over CAN compliant to ISO 11898-2:2016 defined wake-up pattern.
- Integrated 10 Mbps GPIO channel for diagnostics, LED indication, or supply monitoring.
- Low emissions meeting CISPR 32 radiated emissions Class B standard.
Applications
- Factory Automation
- Building Automation
- Industrial Transport
- Solar Inverters and Protection Relays
- Motor Drives
Q & A
- What is the primary function of the ISOW1044DFMR?
The ISOW1044DFMR is a galvanically-isolated CAN transceiver with an integrated isolated DC-DC converter.
- What are the isolation ratings for the ISOW1044DFMR?
The device has an isolation rating of 5000 VRMS / 1500 VPK and supports both reinforced and basic isolation options.
- What is the operating temperature range of the ISOW1044DFMR?
The operating temperature range is from -40°C to 125°C.
- What are the ESD protection levels for the ISOW1044DFMR?
The device offers HBM ESD protection of ±12 kV and IEC 61000-4-2 contact discharge protection of ±8 kV.
- Does the ISOW1044DFMR support standby mode?
- What is the maximum power dissipation for the ISOW1044DFMR?
The maximum power dissipation for both sides is 1060 mW.
- What are the key safety certifications for the ISOW1044DFMR?
The device is planned for certifications such as VDE, UL 1577, IEC 62368-1, IEC 61010-1, and IEC 60601-1.
- Can the ISOW1044DFMR be used in high-temperature environments?
- What is the purpose of the integrated GPIO channel in the ISOW1044DFMR?
The integrated 10 Mbps GPIO channel is for diagnostics, LED indication, or supply monitoring.
- How does the ISOW1044DFMR meet low emissions standards?
