Performance Motion Devices Magellan DK58113, Руководство пользователя

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Operation
26
DK58113 Developer Kit User Manual
2
2.3 Switching Motor Amplifier
The DK58113 board contains a high-efficiency MOSFET power stage with PWM input control and leg current
feedback. A different configuration is used for each motor type:
• Brushless DC motors are driven in a 3-phase bridge configuration consisting of 6 MOSFETs and
3 leg current sensors
• DC Brush motors are driven in an H-Bridge configuration consisting of 4 MOSFETs and 2 leg
current sensors
• Step motors are driven with two H-Bridges, one for each phase, for a total of 8 MOSFETs and 4
leg current sensors
To operate the DK58113’s on-card amplifier the JP1 and JP2 jumpers must be installed in the 1-2 position.
2.3.1 Brushless DC Motor Drive
Figure 2-3 shows the arrangement of the DK58113’s amplifier stage when the MC53113 IC is used or when the
MC58113 IC is used with the Brushless DC motor type selected.
Figure 2-3:
Brushless DC
Motor Bridge
Configuration
As shown in the table below six PWM output signals and three analog feedback signals interface between the
MC58113 IC and the DK58113’s switching amplifier.
MC58113 signal Description
PWMHigh1A Digital high side drive output for motor phase A
PWMLow1A Digital low side drive output for motor phase A
PWMHigh1B
PWMLow1B
Current1B
PWMHigh1A
PWMLow1A
Current1A
PWMHigh1C
PWMLow1C
Current1C
HV
Pre-
driver
Phase
A
GND
Analog
Conditioning
HV
Pre-
driver
Phase
B
GND
Analog
Conditioning
HV
Pre-
driver
Phase
C
GND
Analog
Conditioning
MC58113
or
MC53113
Phase A
Phase B
Phase C