Reinforced isolator with integrated power reduces board space
The ISOW7841 integrates both isolated data and power, enabling a smaller bill of materials (BOM) and reduced board space, as well as helping with easier and faster system certification. It is aimed at industrial systems such as factory automation, grid infrastructure, motor control, isolated power supplies and test and measurement equipment.
With a power consumption of 1W, the ISOW7841 reduces device operating temperature by up to 40 °C, enabling higher power delivery, higher channel count and longer system lifetime. It uses silicon dioxide for the signal path isolation and a thin film polymer for the power path.
Combining reinforced isolation and DC-DC conversion in a single package minimizes board space and cost for easier multichannel system design. A working voltage of 1 kVrms helps provide improved system reliability and lifetime. The ISOW7841 supports an input voltage range of 3V to 5.5V, while delivering 650mW of output power.
The ISOW7841 improves system signal integrity by minimizing system noise and providing robust electromagnetic compatibility to meet IEC 61000-4-x standards for electrostatic discharge and electrical fast transient events. It also offers immunity of 5kVRMS to reduce the effect of noise and high-voltage events on the industrial equipment.
The ISOW7841 reinforced isolator with a three forward/one backward channel configuration is the first device in the ISOW78xx family, with multiple devices expected later in 2017.
Designers can evaluate the reinforced isolator with the ISOW7841 evaluation module (ISOW7841EVM), available today for $49. Engineers can also jump-start their system design with the integrated signal and power reference designs for isolated RS-485 and RS-232. Another reference design is available to help integrate reinforced isolation and power in an industrial grid design.
The ISOW7841 is available in a 16-pin small outline integrated circuit (SOIC) wide-body package in both fail-safe low and fail-safe high configurations. Pricing starts at US$5.50 in 1,000-unit quantities.
For more information, see www.ti.com/isow-pr-eu
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