SPACECRAFT
CONTROLLERS_
MOOG
Spacecraft Motor Driver Module
Application-Specific Integrated Circuit (ASIC)
Moog is a world leader in the manufacture of ultra-reliable motion control equipment designed specifically for
spaceflight applications. The product family includes custom systems and components to meet specific application
and payload requirements.
• Solar Array Drive Assemblies
• Antenna Pointing Mechanisms
• Rotary Incremental Actuators
• Linear Incremental Actuators
• Instruments: Scanning and Pointing
To provide our customers with integrated system solutions, Moog has produced space-rated control electronics for
over 20 years. Expanding this capability, Moog is currently developing a high reliability, radiation hardened, Motor Driver
Module Application Specific Integrated Circuit (ASIC) for spaceflight applications.
Our ASIC will offer the following advantages:
• Higher reliability than current hybrid circuits
• Smaller physical packaging
• Discrete command interface
• Broader range of input power voltage compatibility
• Two, three or four phase motor drive, solenoid
drive control, micro-step capability
•
•
•
•
Higher radiation hardness/tolerance (100 k Rad)
Programmable functionality for specific applications
Greater resistance to component obsolescence
Brushless DC drive capability, when combined with
Moog FPGA controller hardware and firmware
• Solenoid Driver
SPACECRAFT CONTROLLERS_
SPACECRAFT CONTROLLERS_
Functional Block Diagram
Figure 2
Functional Block Diagram
ASIC Specifications
Spacecraft
Power Bus
Functional:
Phase A
Input Power
Conditioning
Input Commands
Phase A
Motor FET
Driver
Direction Cmnd
ENABLE, DIRECTION, STEP
Direction Polarity
Step Polarity
Two, Three or Four Phase Motor Drive
Enable Polarity
Micro-stepping (upto 1/64)
Output Current Control/Limit: selectable
USTEP2
USTEP3
Solenoid Driver (1 - 4 devices)
MOTORMODE1
Performance:
MOTORMODE2
MOTORMODE3
Functional
Programming
Inputs
USTEP1
Brushless DC Motor Drive Capable
Current Set
Input Voltage Range: 20 to 36 VDC
Current Monitor Phase 2
Phase C
Phase C
Motor FET
Driver
Current Monitor Phase 3
Phase D
MOTORMODE4
Electrical
Current Monitor Phase 1
Phase B
Phase B
Motor FET
Driver
Micro-Stepping Table
Enable Cmnd
Selectable Modes
Command and
Control Logic
Step Cmnd
Phase D
Motor FET
Driver
Output
Current Control
Current Monitor Phase 4
Output Drive Current: 0 to 2.0 Amp
Output Switching Speed: >35KHz
Spacecraft
Power Return
Power Dissipation: 6 watts maximum
Low RDS on (approx 165 mΩ)
2
Standby Power Dissipation: < .5 watts
2
2
2
BLDC BLDC BLDC BLDC
PWM PWM PWM PWM
Phase Phase Phase Phase
A
B
C
D
Environmental
Operating Temperature: -55° C to +100° C
Storage Temperature: -65 to +150°C
Pressure: atmospheric to space vacuum
Sinusoidal Vibration
Random Vibration
Shock
Frequency (Hz)
Level
10-20
20-100
2.451 inch D.A.
50.0 G
Frequency (Hz)
Power Spectral Density
20
50
500
2000
0.05 G2/Hz
0.4 G2/Hz
0.4 G2/Hz
0.08 G2/Hz
Overall RMS
20.84 Grms
Frequency (Hz)
Power Spectral Density
100
1200
10000
36 g’s
2200 g’s
2200 g’s
Radiation Hardness
SEE/SEU: Latch-up, gate rupture, burn out immune up to:
LETTH ≤ 80 (MeV*cm2)/mg
100k Rad(Si) Total Dose radiation capable
MOOG
21339 Nordhoff Street, Chatsworth, California 91311 USA
+1.818.734.6700 Fax: +1.818.341.3884
www.moog.com
Form 500-654 0411