Overview
The ISOW7741DFMR, produced by Texas Instruments, is a low-emissions, low-ripple, quad-channel digital isolator with an integrated high-efficiency power converter. This device is part of the ISOW77xx family and is designed to provide galvanic isolation for digital signals while also supplying isolated power, eliminating the need for a separate isolated power supply in space-constrained designs. It features a 20-pin wide body SOIC package and operates over an extended temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC (DFM), 20 pins |
| Operating Temperature Range (°C) | -40 to 125 |
| Data Rate | 100 Mbps |
| Isolation Rating (VRMS) | Up to 5000 VRMS (DW package) |
| Surge Capability | Up to 12.8 kV |
| CMTI (typical) | 100 kV/µs |
| Logic Supply (V IO) | 1.71 V to 5.5 V |
| Power Converter Supply (V DD) | 3 V to 5.5 V |
| Output Power | Up to 0.55 W |
| Output Ripple | 24 mV |
| Efficiency at Max Load | 46% |
Key Features
- Integrated DC-DC converter with low-emissions and low-noise
- Emission optimized to meet CISPR 32 and EN 55032 Class B with >5 dB margin on 2 layer board
- Low frequency power converter at 25 MHz enabling low noise performance
- High efficiency output power with up to 0.55 W available
- Low output ripple of 24 mV
- Independent power supply for channel isolator and power converter
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, and surge immunity
- ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
- Reinforced and Basic isolation options
- Safety-related certifications including VDE, UL 1577, IEC 62368-1, IEC 61010-1, and GB 4943.1
Applications
- Hybrid, electric, and powertrain systems (EV/HEV)
- Battery management systems (BMS)
- On-board chargers
- Traction inverters
- DC/DC converters
- Inverter and motor control
- Industrial automation
- Motor control
- Power supplies
- Solar inverters
- Medical equipment
Q & A
- What is the data rate of the ISOW7741DFMR?
The data rate of the ISOW7741DFMR is 100 Mbps.
- What is the operating temperature range of the ISOW7741DFMR?
The operating temperature range is –40°C to +125°C.
- What type of package does the ISOW7741DFMR come in?
The ISOW7741DFMR comes in a 20-pin wide body SOIC (DFM) package.
- What is the maximum output power of the ISOW7741DFMR?
The maximum output power is up to 0.55 W.
- Does the ISOW7741DFMR have any safety-related certifications?
- What is the typical CMTI of the ISOW7741DFMR?
The typical CMTI is 100 kV/µs.
- What are the logic supply and power converter supply voltage ranges for the ISOW7741DFMR?
The logic supply (V IO) range is 1.71 V to 5.5 V, and the power converter supply (V DD) range is 3 V to 5.5 V.
- Does the ISOW7741DFMR have any electromagnetic compatibility features?
- What is the output ripple of the ISOW7741DFMR?
The output ripple is 24 mV.
- Can the ISOW7741DFMR be used in automotive applications?
