KTFRDM17C724UG, Rev. 1.0
Freescale Semiconductor
5
Getting to Know the Hardware
3
Getting to Know the Hardware
3.1 Board Overview
The FRDM-17C724-EVB evaluation board features the MPC17C724 dual H-Bridge IC, which features the ability to drive either a single
two phase stepper motor or two brushed DC motors. The MPC17C724 incorporates internal control logic, a charge pump, gate drive, and
high current, low R
DS(on)
MOSFET output circuitry.
3.2 Board Features
The FRDM-17C724-EVB evaluation board is designed to easily evaluate and test the main component, the MPC17C724. The board's
main features are as follows:
•
Compatible with Freedom series evaluation boards such as FRDM-KL25Z
•
Built in fuse for both part and load protection
•
Screw terminals to provide easy connection of power and loads
•
Test points to allow probing of signals
•
Built in voltage regulator to supply logic level circuitry
•
LED to indicate status of Logic power supply of the evaluation board, as well as a general purpose indicator
3.3 FRDM-KL25Z Features
The FRDM-KL25Z board features are as follows:
•
MKL25Z128VLK4 MCU - 48 MHz, 128 KB Flash, 16 KB SRAM, USB OTG (FS), 80LQFP
•
Capacitive touch slider, MMA8451Q accelerometer, tri-color LED
•
Flexible power supply options - USB, coin cell battery, external source
•
Easy access to MCU I/O
•
Battery-ready, power-measurement access points
•
Form factor compatible with Arduino™ R3 pin layout
•
New, OpenSDA debug interface
•
Mass storage device flash programming interface (default) - no tool installation required to evaluate demonstration
applications
•
P&E Debug interface provides run-control debugging and compatibility with IDE tools
•
CMSIS-DAP interface: new ARM standard for embedded debug interface
Additional reference documents are available on
freescale.com/FRDM-KL25Z.
3.4 Device Features
This evaluation board features the following Freescale product:
Table 1. Device Features
Device
Description
Features
MPC17C724
The MPC17C724 is a dual H-Bridge
motor driver IC intended for operating
stepper motors
• Voltage range of operation from 2.7 V to 5.5 V
• Output Current of 0.4 A (DC) continuous, 0.8 A peak
• 1.0
R
DS(on)
H-Bridge MOSFET outputs
• 3.3/5.0 V TTL/CMOS compatible inputs
• PWM frequencies up to 200 kHz
• Undervoltage shutdown
• Cross conduction (shoot through) suppression
