ISOW1050

The ISOW1050 device is an isolated controller area network (CAN) transceiver with a built-in isolated DC-DC converter that eliminates the need for a separate isolated power supply in space-constrained isolated designs. The low-emissions, isolated DC-DC meets CISPR 32 radiated emissions Class B standard on a simple two-layer PCB.

The device supports both classical CAN and CAN flexible data (FD) networks up to 5 Megabits per second (Mbps) data rate. The device offers ±58V DC bus fault protection and ±12V common-mode voltage range. Both signal and power paths are 5kVRMS isolated per UL1577 and are qualified for reinforced isolation per VDE, TUV and CQC. The bus pins of these devices can endure up to 7kV of IEC 61000-4-2 electrostatic discharge (ESD) without TVS diode and up to 15kV with TVS diode.

The ISOW1050 device can operate from a single supply voltage of 4.5V to 5.5V. This device supports a wide operating ambient temperature range from –55°C to +125°C and is available in 16-pin DWE (SOIC-16 footprint compatible package) offering a minimum of 8mm creepage and clearance.

The ISOW1050 includes protection features like thermal-shutdown (TSD) and TXD dominant time-out (DTO). ISOW1050 has two variants. ISOW1050V has an extra VDDL pin to supply the signal isolation dies. If MCU logic pins are at a different supply rail from the supply of the power converter, then the VDDL pin can share the same supply as the MCU logic without using a level shifter.