Features integrated high efficiency power converter and low emission electrical isolation digital isolator
Texas Instruments ISOW7721 Dual channel digital isolator is an electrical isolation digital isolator with an integrated high efficiency power converter and low emissions. The integrated DC-DC converter provides isolated power up to 550mW.
This feature eliminates the need for a separate isolated power source in space-constrained isolation designs. If additional power is needed, Texas Instruments' ISOW7721 supports multi-device connectivity, using two devices in one system to increase the integrated power output to more than 1W.
Features
● Data rate of 100 mbps
● Integrated DC - DC converter, low emission, low noise
- The emission optimization meets CISPR 32 and EN 55032 Class B, and the two-layer plate margin is greater than 5dB
- The 25MHz low frequency power converter enables low noise performance
- 24mV low output ripple
● Efficient output power
- 46% efficiency at maximum load
- The output power is up to 0.55W
- V(ISOOUT) accuracy ±5%
- At 5V to 5V, the maximum available load current is 110mA
- The maximum available load current is 140mA at 5V to 3.3V
- The maximum available load current of 60mA is 3.3V to 3.3V
● Multiple isow7721 chains are supported to increase the system output power to more than 1W and more than 200mA
● Separate power supply for channel isolator and power converter
- 1.71V to 5.5V Logic Power Supply (V(IO))
- 3V to 5.5V Power converter (V(DD))
● Strong electromagnetic compatibility (EMC)
- System level ESD, EFT, and surge immunity
- ±8kV IEC 61000-4-2 contact discharge protection over the isolation barrier
● Hardening and basic quarantine options
● High CMTI (100kV/µs(typical))
● Safety-related Certification (Program)
- VDE reinforced and basic insulation conforms to DIN VDE V 0884- 11:17-01
- UL 1577 Component identification program
- Certification of IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011
● Extended temperature range from -40°C to +125°C
● 20-pin wide-body SOIC package
Applications
● Factory automation
● Motor control
● Power grid infrastructure
● Medical equipment
● Test and measurement
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