DC-DC converters deliver efficient power to isolated circuits

The UCC12050 and UCC12040 isolated DC-DC converters from Texas Instruments are high-efficiency converters designed to produce efficient, isolated power to circuits that need a bias supply with well-regulated output voltages. The devices are excellent for a broad range of applications, including protection relays and smart breakers, patient monitoring, PLC analog input and output modules, and isolated voltage and current sensing.

The converters employ a proprietary architecture to combine a transformer and DC-DC controller, producing 500mW of isolated power with low EMI and high efficiency. Both devices offer protection features for effective system robustness, as well as synchronisation capability and regulated 3.3V or 5V output options. The UCC12050 provides a 5kVRMS reinforced isolation rating, a surge capability of 10kVPK, and a working voltage of 1.2kVRMS. The UCC12040 converter provides a 3kVRMS basic isolation rating, surge capability of 8kVPK, and a working voltage of 800VRMS.

The converters are supported by the UCC12050EVM-022 evaluation module. The module enables designers to evaluate the capabilities and performance characteristics of the two converters, with an EVM layout that offers an example of a proper board layout for rated isolation and EMI performance.