Instruction Manual
MAX15303 PMBus Command Set User’s Guide
Page 2 of 52
Introduction
Maxim Integrated InTune™ digital power products utilize the PMBus™ command standard for configuration, control, and
telemetry.
This document lists and describes the PMBus commands implemented in the MAX15303 digital DC-DC converter. Standard
commands from the PMBus specification are not described in detail unless there are deviations from the PMBus
specification functionality. Maxim manufacturer-specific commands are fully described in this document.
References for this document are found on the PMBus and SMBus organization websites.
http://pmbus.org/specs.html
http://smbus.org/specs/
The commands in this document are presented in the following format:
<COMMAND_NAME>
Reference:
<”Standard” or “Maxim Specific”>
Lockable:
<yes/no>
Command Code:
<hex value>
Format:
<data format>
Data Bytes:
<byte count>
Units:
<unit of measure>
Transfer:
<SMBus transaction>
Factory Value:
<Maxim setting>
Description/Notes:
<Command definition if Maxim-specific, or notes on command functionality where it differs from the
PMBus specification.>
Table of Contents
Introduction ................................................................................................................................................................................. 2
On, Off, and Margin Testing-Related Commands ........................................................................................................................ 6
OPERATION .............................................................................................................................................................................. 6
ON_OFF_CONFIG ..................................................................................................................................................................... 6
VIN_ON .................................................................................................................................................................................... 7
VIN_OFF ................................................................................................................................................................................... 7
Output Voltage-Related Commands ............................................................................................................................................ 9
VOUT_MODE ........................................................................................................................................................................... 9
VOUT_COMMAND ................................................................................................................................................................... 9
VOUT_TRIM ............................................................................................................................................................................. 9
VOUT_CAL_OFFSET ................................................................................................................................................................ 10
VOUT_MAX ............................................................................................................................................................................ 10
VOUT_MARGIN_HIGH ........................................................................................................................................................... 11
VOUT_MARGIN_LOW ............................................................................................................................................................ 11
VOUT_TRANSITION_RATE ...................................................................................................................................................... 12