Texas Instruments Inc. introduced a high-efficiency, primary-side feedback transformer driver for isolated 2-W power supplies, which are used in programmable logic controllers, industrial automation and other noise-sensitive data acquisition designs.
The high-efficiency TPS55010 with integrated FETs features a simple and unique Fly-Buck topology to provide isolated power and remove ground loops from analog circuitry and communication interfaces, such as RS-485 and RS-232, from an unregulated 3.3-V or 5-V input. The 2-W converter does not need an optocoupler, and provides up to 85-percent power efficiency.
- 2-W isolated power converter with integrated FETs supports variety of industrial designs. Output voltage is set by a resistor divider and the transformer turns ratio.
- Wide switching frequency range (100 kHz to 2 MHz) offers design flexibility to optimize efficiency and space. Frequency can be synchronized to a master clock to reduce noise in sensitive data acquisition circuitry.
- Supports -40°C to +150°C operating junction temperature and comes in a space-saving, thermally enhanced 3-mm x 3-mm x 1-mm monolithic QFN package.
Pricing: $1.65 in 1,000-unit quantities. The DCP010505 plug-in module comes in a 7-pin SIP package with a suggested resale price of $5.35 in 1,000-unit quantities.
Availability: Volume now from TI and its authorized distributors in a 16-pin, 3-mm x 3-mm thermally enhanced QFN package.
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