Radiation-tolerant motor controller for satellites and space uses introduced by Microsemi
ALISO VIEJO, Calif. – Microsemi Corp. in Aliso Viejo, Calif., is introducing production prototypes of the LX7720 radiation-tolerant motor controller for satellite manufacturers sensitive to area and weight challenges.
The LX7720 radiation-tolerant motor controller can help reduce weight and board space relative to conventional discrete motor control circuits.
As the second member of the SSM family, the LX7720 works with a field programmable gate array (FPGA) and complements Microsemi's other components for demanding space applications.
Additional target applications include motor driver servo control, linear actuator servo control and driving stepper, brushless direct current (BLDC), and permanent-magnet synchronous (PMSM) motors on satellite buses for solar panel deployment and driving reaction wheels.
The motor controller also is for spacecraft payload instruments in multi-axis pointing mechanisms for antennas and laser terminals; precise motion control of lenses, filters, and mirrors, as well as in robotics applications like pressure-sensitive motion control.
The LX7720 for space applications has four half-bridge N-channel MOSFET drivers; four floating differential current sensors; pulse modulated resolver transformer driver; three differential resolver sense inputs; six bi-level logic inputs; fault detection; radiation-tolerant by design: 100 krad total ionization dose (TID), 50 krad enhanced low dose radiation sensitivity (ELDRS) and single event immune; power drivers via external field-effect transistors (FETs); loop control electronics for voltage or current control; position read-back; and available development board available to work with company's RTG4 FPGA development kit.
For more information contact Microsemi online at www.microsemi.com.
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