Next-generation digital power controller provides highest flexibility and performance for AC/DC and isolated DC/DC power designs
Digital control capabilities allow designers to do more with their power systems, including re-usability of hardware designs across multiple platforms and the versatility to fine-tune performance and control parameters for each application, allowing faster time to market. To enable this, the UCD3138 combines a powerful 32-bit microprocessor, high-speed precision data converters, multiple programmable hardware control loops and various communication engines in a small 6-mm x 6-mm package.
The UCD3138 boosts peak and light load efficiency by featuring several control functions to increase efficiency, including sync-FET soft on-off control, dynamic phase shedding, dynamic frequency adjustment and dynamic mode switching.
Supporting all isolated power supply topologies, the controller supports single-phase, two-phase interleaved, or bridgeless power factor correction, hard-switching full-bridge, phase-shifted full-bridge, resonant LLC and other topologies.
The device integrates all essential protection features: The device implements peak current mode control, cycle-by-cycle peak current limiting, high-speed input voltage feed-forward, over-voltage, over-current and over-temperature protection.
Designers will have easy access to several digital power development tools including full-voltage and feature-rich evaluation modules, development kits, reference designs, application firmware source code, programmer’s manuals and the Code Composer Studio software development environment. TI’s Fusion Digital Power Designer graphical user interface (GUI) software tool provides flexible configuration of key power parameters, as well as telemetry, logging, and communication functions . A broad range of hardware design tools, such as control card and open-loop evaluation modules, are available to select customers. In addition TI offers easy-to-use development kits and reference designs, including:
Development kits:
UCD3138PFCEVM-026: Universal input, 400-Vout AC/DC PFC development kit, configurable into single- or two-phase interleaved and bridgeless topologies.
UCD3138PSFBEVM-027: 400-Vin/12-Vout DC/DC phase-shifted full bridge.
UCD3138LLCEVM-028: 400-Vin/12-Vout DC/DC half-bridge resonant LLC.
UCD3138HSFBEVM-029: 48-Vin/12-Vout DC/DC hard-switching full-bridge.
Reference designs:
Universal input, 12-Vout 600-W AC/DC reference design (PFC plus LLC, and PFC plus phase-shifted full-bridge).
48-Vin/12-Vout 1/8 brick DC/DC reference design (hard-switching full bridge).
Availability and Pricing
The UCD3138 is sampling now with volume production expected in the second quarter. It comes in a thermally enhanced 40-pin, 6-mm x 6-mm QFN package and supports a temperature range of -40C to 125C. Suggested resale pricing is $2.70 in 1,000-unit quantities. A 64-pin, 9-mm x 9-mm QFN version of the UCD3138 is priced at $4.10 in 1,000-unit quantities.
More information about the UCD3138 digital power management controller at
www.ti.com/ucd3138-preu
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