The UCD9248 is a multi-rail, multi-phase synchronous buck digital PWM controller designed for non-isolated DC/DC power applications. It integrates dedicated circuitry for DC/DC loop management with flash memory and a serial interface to support configurability, monitoring and management.
The UCD9248 is a fully configurable, multi‑output, multi‑phase digital PWM controller designed for non‑isolated DC/DC power applications. It supports up to four voltage rails, eight phases, and switching frequencies up to 2 MHz with 250 ps duty‑cycle resolution.
The document details electrical characteristics, pin assignments, mechanical data, fault‑protection features, and timing specifications for I²C/SMBus/PMBus interfaces, along with ordering information and regulatory notices.
| Maximum switching frequency | 2 MHz |
|---|---|
| Number of voltage rails | 4 |
| Package type | 80‑pin TQFP (PFC) |
The controller supports switching frequencies up to 2 MHz.
It can control up to four voltage rails and up to eight phases.
It is offered in an 80‑pin TQFP (PFC) package.