UCD9222RGZT

产品概述

The UCD9222RGZT is a two-rail synchronous buck digital Pulse Width Modulation (PWM) Controller designed for non-isolated DC/DC power applications. This device integrates dedicated circuitry for DC/DC loop management with support for up to two VID interfaces. Additionally, it has flash memory and a serial interface to support configurability, monitoring and management. Several Voltage Identification (VID) modes are supported, including a 4-bit parallel interface, a 6-bit interface and a 8-bit serial interface. It is designed to 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 and tracking to optimize for total system efficiency. Additionally, loop compensation and calibration are supported without the need to add external components.

• Fully configurable two-output non-isolated DC/DC
• Duty-cycle resolution
• Up to 1mV closed loop resolution
• Supports multiple soft-start and soft-stop configurations including prebias start-up
• Supports voltage margining and sequencing
• Auxiliary ADC inputs
• Multiple levels of over-current fault protection
• External current fault inputs
• Analog comparators monitor current sense voltage
• Current continually digitally monitored

• Over and under-voltage fault protection
• Over-temperature fault protection
• Enhanced nonvolatile memory with error correction code (ECC)
• Device operates from a single supply with an internal regulator
• Controller that allows operation over a wide supply voltage range
• Supported by Fusion Digital Power™ designer, a full featured
• PC based design tool to simulate, configure and monitor power supply performance
• Green product and no Sb/Br

应用

电源管理, 通信与网络, 工业