ISOW7721 Two-Channel Digital Isolator with Integrated Low-Emissions, Low-Noise DC-DC Converter

1 Features

100 Mbps data rate
Integrated DC-DC converter with low-emissions, low-noise
- Emissions 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
- Low output ripple: 24 mV
High efficiency output power
- Efficiency at max load: 46%
- Up to 0.55-W output power
- V_ISOOUT accuracy of ± 5%
- 5 V to 5 V: Max available load current = 110 mA
- 5 V to 3.3 V: Max available load current = 140 mA
- 3.3 V to 3.3 V: Max available load current = 60 mA
Support for multi-ISOW7721 chain to increase system power output to > 1-W and > 200 mA
Independent power supply for channel isolator & power converter
- Logic supply (V_IO): 1.71-V to 5.5-V
- Power converter supply (V_DD): 3-V to 5.5-V
Robust electromagnetic compatibility (EMC)
- System-level ESD, EFT, and surge immunity
- ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier
Reinforced and Basic isolation options
High CMTI: 100-kV/µs (typical)
Safety Related Certifications (Planned):
- VDE reinforced and basic insulation per DIN VDE V 0884-11:2017-01
- UL 1577 component recognition program
- IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications
Extended temperature range: –40°C to +125°C
20-pin wide body SOIC package