Power Management

Using the UCD92xx Digital Point-of-Load Controller

The UCD92xx family of digital pulse-width modulation (PWM) controllers are multi-rail, multi-phase synchronous buck digital devices designed for non-isolated dc/dc power applications. These controllers integrate dedicated circuitry for dc/dc loop management with flash memory and a serial interface to support configurability, monitoring, and management. These devices provide a wide variety of desirable features for non-isolated dc/dc converter applications while minimizing the total system component count by reducing external circuits. The solution integrates multi-loop management with sequencing, margining, tracking, and intelligent phase management to optimize the solution for total system efficiency. Additionally, loop compensation and calibration are supported without the need for additional external components. This design guide presents a complete discussion of the UCD92xx family, including a description of the Fusion Digital Power Designer software graphical user interface that is available for use with these devices.