AN1914 Freescale Semiconductor / Motorola, AN1914 Datasheet - Page 13

• Manufacturer Part Number: AN1914
• Description: 3-Phase BLDC Motor Control with Sensorless Back EMF Zero Crossing Detection Using DSP56F80x
• Manufacturer: Freescale Semiconductor / Motorola

The introduced BLDC motor control drive with BEMF Zero Crossing is designed as a DSP system that
meets the following general performance requirements:
Motor Characteristics:
Drive Characteristics:
Load Characteristic:
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— Low Voltage Evaluation Motor hardware set
— Low Voltage hardware set
— High Voltage hardware set at variable line voltage 115 - 230V AC
Overvoltage, Undervoltage, Overcurrent, and Temperature Fault protection
Manual Interface (Start/Stop switch, Up/Down push button control, Led indication)
PCMaster Interface
Power Stage Identification with control parameters set according to used hardware set
Motor Characteristics:
Drive Characteristics:
Table 4-2. Low Voltage Evaluation Hardware Set Specifications
DSP56F80x MC PWM Module in Motor Control Applications
Table 4-3. Low Voltage Hardware Set Specifications
Freescale Semiconductor, Inc.
For More Information On This Product,
Maximal line voltage:
Max DC Bus Voltage
Go to: www.freescale.com
Control Algorithm
Speed Range:
Phase Current
Output Torque
Speed Range
Input Voltage:
Motor Type
Type
Max. Electrical Power:
Max DC Bus Voltage
Control Algorithm
Phase Voltage:
Speed Range:
Phase Current
Speed Range
Input Voltage:
Motor Type
4 poles, three phase, star connected,
Speed Closed Loop Control
6 poles, three phase, star con-
< 5000 rpm (at 60V)
Speed Closed Loop Control
0.140Nm (at 2A)
BLDC motor
< 2000 rpm
nected, BLDC motor
3000 rpm (at 12V)
System Design Concept
12V DC
Varying
15.8 V
60V
2A
< 3000 rpm
12V DC
3*6.5V
150 W
15.8 V
17A
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