ZSPM2000 Datasheet

© 2016 Integrated Device Technology, Inc.

11

January 27, 2016

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Product Summary

2.1.

Overview

The ZSPM2000 is a configurable true-digital single-phase PWM controller for high-current, non-isolated DC/DC

supplies supporting switching frequencies up to 1MHz. It offers a PMBus™ configurable digital power control loop

incorporating output voltage sensing and average inductor current sensing, bundled with extensive fault

monitoring and handling options. A high-speed MOSFET driver for a synchronous step-down converter is inte-

grated in the ZSPM2000. The ZSPM2000 operates from a single 5V supply.

Several different functional units are incorporated in the ZSPM2000. A dedicated digital control loop is used to

provide fast loop response and optimal output voltage regulation. This includes output voltage sensing, average

inductor current sensing, a digital control law, and a digital pulse-width modulator (DPWM). In parallel, a

dedicated, configurable error handler allows fast and flexible detection of error signals and their appropriate

handling. A housekeeping analog-to-digital converter (HKADC) ensures the reliable and efficient measurement of

environmental signals such as input voltage and temperature. An application-specific, low-power microcontroller

is used to control the overall system. It manages configuration of the various logic units and handles the PMBus™

communication protocol. A PMBus™/SMBus/I²C™ interface is incorporated to connect with the outside world,

supported by control and power-good (PGOOD) signals.