Texas Instruments (TI) has introduced four Fusion Digital Power products that enable point-of-load digital power management in telecom and data-centric applications. TI plans to demonstrate several innovative digital power platforms, including its new configurable, dual-phase synchronous buck controller.
TI’s single-phase UCD9111 and dual-phase UCD9112 controllers implement digital pulse width modulators (PWM) with 175 picosecond resolution, and are fully configurable via a graphical user interface (GUI) for monitoring, control and management for point-of-load power conversion – without the need to write a single line of software. GUI configuration allows a designer to intelligently manage the power supply’s voltage and current thresholds and response, soft start, margining, loop compensation and many other features.
The UCD9111 and UCD9112 incorporate a control law accelerator peripheral, which performs full-digital loop control while supporting switching frequencies of up to 2 MHz. The controllers’ architecture is optimized to deliver high power performance with functionality, such as differential voltage feedback for common mode rejection and 175 ps PWM resolution to support wide input to output voltage ratios at high switching frequencies without limiting the output resolution.
Additionally, the UCD9111 and UCD9112 devices support up to 80 PMBus interface commands for control, configuration and management of the power supply, while requiring a minimal supply current as low as 7 mA during normal operation.
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