Single-chip gives reinforced isolated power and data up to 100 Mbps

Texas Instruments introduced a new single-chip reinforced isolator with integrated power and efficient power transfer, low radiated emissions and high immunity. This new reinforced isolator supports reliable operation of industrial systems, including factory automation, grid infrastructure, motor control, isolated power supplies, and test and measurement equipment.

The ISOW7841 integrates both isolated data and power, enabling a small bill of materials (BOM) and reduced board space, as well as helping with easier and faster system certification.

Key features and benefits of the ISOW7841

• Eighty percent higher efficiency: The ISOW7841 reduces device operating temperature by up to 40 degrees C, enabling high power delivery, high channel count and long system lifetime.
• Single-chip reinforced isolated power and data up to 100 Mbps: 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 0.65W of output power.
• More than 10-dB lower radiated emissions: The ISOW7841 improves system signal integrity by minimizing system noise and providing robust electromagnetic compatibility to meet International Electrotechnical Commission (IEC) 61000-4-x standards for electrostatic discharge and electrical fast transient events. Additionally, the reinforced isolator offers the highest level of immunity available in the market today reducing 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. These new devices join TI’s isolation portfolio that supports the highest isolation ratings, reliability, immunity and performance.

Designers can quickly and easily evaluate the new reinforced isolator with the ISOW7841 evaluation module (ISOW7841EVM), available today for US$49 from the TI store and authorized distributors. Engineers can also jump-start their system design with the integrated signal and power reference designs for isolated RS-485 and RS-232. Additionally, another reference design is available to help integrate reinforced isolation and power in an industrial grid design.

The ISOW7841 reinforced isolator with integrated power is now available through the TI store and authorized distributors in a 16-pin small outline integrated circuit (SOIC) wide-body package. This device is available in both fail-safe low and fail-safe high configurations. Pricing starts at US$5.50 in 1,000-unit quantities.