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dsPICDEM™ MCHV-3 DEVELOPMENT
BOARD USER’S GUIDE

2016 Microchip Technology Inc. DS50002505A-page 15
Chapter 1. Introduction
1.1 OVERVIEW
The Microchip dsPICDEM™ MCHV-3 Development Board is intended to aid the user
in the rapid evaluation and development of a wide variety of motor control applications
using PIC32 and PIC24 Microcontrollers (MCUs), and dsPIC
®
Digital Signal
Controllers (DSCs). This development system is targeted to control Brushless DC
(BLDC) motors, Permanent Magnet Synchronous Motors (PMSM) and AC Induction
Motors (ACIM) in sensor or sensorless operation.
This flexible and cost-effective tool can be configured in different ways for use with
Microchip’s specialized motor control devices. The dsPICDEM™ MCHV-3 Develop-
ment Board is essentially an upgraded version of the dsPICDEM
MCHV Development
System. The dsPICDEM™ MCHV-3 Development Board is designed to support the
PIC24F, PIC24E, dsPIC33F, dsPIC33E and PIC32 Motor Control device families, and
offers a mounting option to connect a generic 100-pin Plug-In Module (PIM).
The system has a three-phase power module device that contains the motor inverter
and the gate driver’s circuitry. The circuit drives a BLDC, PMSM or ACIM motor using
different control techniques without requiring any additional hardware. It also has
Power Factor Correction (PFC) circuitry in order to provide a full set of tools used
in motor control applications.
Figure 1-1 provides a photograph of the
dsPICDEM MCHV-3. A block diagram that shows the main components of the system
is provided in
Figure 1-2 .
The rated continuous output current from the inverter is 6.5A (RMS). This allows up to
approximately 2 kVA output when running from a 208V to 230V single-phase input
voltage in a maximum 30ºC (85ºF) ambient temperature environment. Therefore, the
system is ideally suited for running a standard 3-phase induction motor of up to a
1 kW (1.34 HP) rating or a slightly higher rated industrial servo motor. The power
module is capable of driving other types of motors and electrical loads that do not
exceed the maximum power limit, and are predominantly inductive. Furthermore,
single-phase loads can be driven using one or two of the inverter outputs.
The unit is capable of operating from 90V, up to a maximum of 265V. A more detailed
explanation of power limitations is provided in
Chapter 3. “Hardware”
.
Note:
It is recommended to carefully read
Chapter 3. “Hardware”
before
attempting to use the system.