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LX7720 Datasheet Motor Driver

Manufacturer: Microsemi (now Microchip Technology)

Overview: Production Datasheet LX7720 Motor Driver with Four Half-Bridge Drivers, Rotation and Position Sensing for.

General Description

The LX7720 is a spacecraft motor driver that is radiationhardened by design and works with either a space FPGA controller such as RTG4, RTAX-S/SL, and RT PolarFire, or a space MCU such as SAMRH71F20, SAMV71Q21RT, and SAM3X8ERT.

The LX7720 contains four half-bridge drivers with floating current sense for motor coil driving, six bi-level inputs for sensing Hall effect sensors or rotary encoders, and a resolver or LVDT interface to digital with primary coil driver.

The LX7720 works with an FPGA or MCU system controller to provide a complete closed loop motor driver with coil current feedback and rotation or linear position sensing.

Key Features

  • Four half-bridge N-channel MOSFET drivers.
  • Four floating differential current sensors.
  • Pulse modulated resolver/LVDT transformer driver.
  • Three differential resolver/LVDT sense inputs.
  • Six threshold adjustable bi-level logic inputs for Hall effect sensor/encoder interfaces.
  • Fault detection.
  • Radiation tolerant: 100krad(Si) TID, 50krad(Si) ELDRS, SEL immune up to 60MeV. cm²/mg and 125°C (fluence of 107 particles/cm²).

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LX7720 Distributor