Texas Instruments ISOW644x-Q1 Quad-Channel Digital Isolators
Texas Instruments ISOW644x-Q1 Quad-Channel Digital Isolators combine four high-speed isolated data channels with an integrated isolated DC-DC converter. The devices provide reinforced isolation, robust electromagnetic compatibility, selectable 3.3V or 5V isolated output, and protection functions that include soft start, undervoltage lockout, overload and short-circuit protection, and thermal shutdown.
The Texas Instruments ISOW644x-Q1 devices isolate CMOS or LVCMOS digital I/Os while providing isolated power for the secondary side and connected peripherals, helping reduce the need for a separate isolated power supply. The family supports factory automation, motor control, grid infrastructure, medical equipment, test and measurement, and hybrid and electric powertrain systems.
Features
- ISOW644x-Q1 qualified for automotive applications
- Human body model ESD classification level 2
- Charged device model ESD classification level C6
- Integrated DC-DC converter with best-in-class emissions
- Emission optimized to meet CISPR 25 on a 2-layer board
- Selectable isolated output voltage of 3.3V or 5V
- Independent power supply for channel isolator and power converter in ISOW644xV
- Robust electromagnetic compatibility
- System-level ESD, EFT, and surge immunity
- Overvoltage tolerant inputs
- Enhanced protection features
- Soft start to limit inrush current
- Overvoltage and undervoltage lockout
- Overload and short-circuit protection
- Thermal shutdown
- Safety-related certifications planned
- DIN EN IEC 60747-17 (VDE 0884-17)
- UL 1577 component recognition program
- IEC 62368-1, IEC 61010-1, IEC 60601-1, and GB 4943.1 certifications
Applications
- Factory automation
- Motor control
- Grid infrastructure
- Medical equipment
- Test and measurement
- Hybrid, electric, and power train system (EV/HEV)
- Battery management system (BMS)
- On-board charger (OBC)
- Traction inverter
- DC/DC converter
Specifications
- Data rate of up to 150Mbps
- Output ripple of 30mV
- Maximum power-converter efficiency of 42.5%
- Output power of up to 0.55W
- VISO accuracy of 10%
- Maximum available load current of 110mA for 5V to 5V operation
- Maximum available load current of 140mA for 5V to 3.3V operation
- Maximum available load current of 60mA for 3.3V to 3.3V operation
- Typical propagation delay of 7.3ns
- Logic supply voltage range of 2.25V to 5.5V for ISOW644xV
- Typical CMTI of 200kV/μs
- SPI support up to 25MHz at 5V
- SPI support up to 20.8MHz at 3.3V
- Operating temperature range of -40°C to +125°C
- Human body model ESD rating of ±2000V
- Charged device model ESD rating of ±1500V
- 16-pin wide-body SOIC package
- Package dimensions of 10.30mm x 10.30mm
- Body dimensions of 10.30mm x 7.50mm
Simplified Schematic
