Reinforced isolator packs power converter

-April 02, 2017

TI’s ISOW7841 reinforced digital isolator integrates a DC/DC converter that provides up to 650 mW of isolated power, while offering 80% higher efficiency than most integrated devices, according to the manufacturer. This quad-channel isolator reduces device operating temperature by up to 40°C, enabling higher power delivery, higher channel count, and longer system lifetime.

By combining 5000 VRMS reinforced isolation and DC/DC conversion in a single package, the ISOW7841 eliminates the need for a separate isolated power supply, minimizing both board space and BOM cost. Additionally, a working voltage of 1 kVRMS helps improve system reliability and life expectancy. The part accepts an input voltage range of 3 V to 5.5 V and offers three forward channels and one reverse channel, all with a maximum data rate of 100 Mbps.

Housed in a 16-pin SOIC wide-body package, the ISOW7841 comes in both failsafe-low and failsafe-high configurations. Prices start at $5.50 each in lots of 1000 units. Designers can evaluate the performance of the ISOW7841 reinforced isolator with the ISOW7841EVM evaluation module, available for $49 from the TI store.

ISOW7841 product page

Texas Instruments,

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