DRM028 — Rev 0
Designer Reference Manual
MOTOROLA
Glossary
163
Designer Reference Manual — Sensorless BLDC Motor Control
Appendix B. Glossary
AC
— Alternative Current.
ACIM
— AC Induction Motor.
A/D converter
— analog to digital converter.
ADC
— analog to digital converter - see “A/D converter”
back-EMF
— back Electro-Motive Force (in this document it means the
voltage inducted into motor winding due to rotor movement)
BLDC
— Brushless DC motor.
CW
— CodeWarrior - compillers produced by Metrowerks
DC
— Direct Current.
dc-bus
— part of power converter with direct current
DC-motor
— Direct Current motor, if not mentioned differently, it means
the motor with brushes.
DT
— see “Dead Time (DT)”
Dead Time (DT)
— short time that must be inserted between the turning
off of one transistor in the inverter half bridge and turning on of the
complementary transistor due to the limited switching speed of the
transistors.
duty cycle
— A ratio of the amount of time the signal is on versus the
time it is off. Duty cycle is usually represented by a percentage.
ECLOVACBLDC
— 3-ph AC/BLDC Low Voltage Power Stage
ECMTRLOVBLDC
— 3-ph BLDC Low Voltage Motor-Brake SM40N +
SG40N
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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