ADM00902
DEMONSTRATION BOARD
FOR EMC2103 USER’S GUIDE
2019 Microchip Technology Inc.
DS50002905A-page 9
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the ADM00902 Demonstration Board for
EMC2103 and covers the following topics:
•
EMC2103-4 Device Short Overview
•
What is the ADM00902 Demonstration Board?
•
ADM00902 Demonstration Board Kit Contents
1.2
EMC2103-4 DEVICE SHORT OVERVIEW
EMC2103 is an SMBus/I
2
C-compliant fan controller with up to three external and
one internal temperature channels. The fan driver can be operated using two methods,
each with two modes. The methods include an RPM-based fan speed control algorithm
and a direct PWM drive setting. The modes include manually programming the desired
settings or using the internal programmable temperature look-up table, to select the
desired setting based on measured temperature.
The temperature monitors offer ±0.5°C accuracy (for external diodes). The monitors
include sophisticated features to reduce errors introduced by series resistance and
beta variation of substrate thermal diode transistors commonly found in processors.
The EMC2103 device also includes hardware-programmable temperature limit and
dedicated system shutdown output for thermal protection of critical circuitry.
1.3
WHAT IS THE ADM00902 DEMONSTRATION BOARD?
The ADM00902 Demonstration Board for EMC2103 provides an example of a fan
control application using the EMC2103-4 fan controller. There is one fan channel, one
internal temperature sensor and three remote temperature sensor inputs available. An
on-board heat source is connected to Ext 1 temperature channel.
The board is powered from either the Micro-USB connector (boosted to 12V for
powering the fan and the heat source) or the 2.1 mm jack for 12V input (power adapter
not included), making it possible to drive low-power fans without the need for an
external power supply. Test points for the 12V input are also available.
I
2
C communication is provided over USB by using the on-board MCP2221A USB to the
I
2
C bridge. The Thermal Management Utility Graphic User Interface (GUI)
automatically detects the board and loads the appropriate interface.
An on-board heat source with ten heat levels is provided for demonstrative purposes.
The demonstration GUI is equipped with options to manually set up all the parameters
for the thermal sensor and the fan controller. The GUI also provides a fully automatic
temperature control interface, where the fan channel can be linked to any temperature
channel.
