Optimized for AC/DC and isolated DC/DC power supply applications, Texas Instruments Inc.'s UCD3138 digital power controller employs multiple peripherals that boosts peak and load efficiency; supports all isolated power topologies; and integrates essential protection features.
Power supply applications include servers, telecom rectifiers and high-power DC/DC modules.
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.
Boosts peak and light load efficiency: The device features several control functions to increase efficiency, including sync-FET soft on-off control, dynamic phase shedding, dynamic frequency adjustment and dynamic mode switching
Supports 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.
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.
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.
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