Stepper motor motion control board Ever Elettronica
ASIC EEA001

EEA001 Enhanced micro-stepping controller of 2 phase stepping motors drives.

The ASIC EEA001 is a complete controller of enhanced, high performance, drives for stepping motors integrating the functions of sequencer and power stages control and protection against overcurrent,over & under-voltage, over-temperature. Mastered by the standard step motor drive's controls (Step, Direction, Enable) it ensures the highest motor's performances through the execution of Micro-stepping movements at high step resolution (up to 1/256) permitted by no odd harmonics sinusoidally shaped winding currents (Maximum step frequency: 2,56 MHz). The ASIC also allows to set a smoothing factor to optimize the drive and motor performances in terms of:

- high speed and torque at shaft - low heating of the drive
- no vibrations - low heating of the motor
- no resonances - very low mechanical noise

Designed to manage two power-stages configured as "H-bridge" working in bipolar chopper mode, the ASIC features a switching frequency of 33 kHz and a circuitry interfacing the drive's power stages designed to offer the widest compatibility with the most popular integrated circuits for MOSFET and IGBT gates driving, being compatible with most of cheap monolithic power circuits too.

ASIC's set up inputs can fit for drive's end user application step angle and phase current, activating the optional automatic current reduction at standstill, of the motor, and several optional drive operating modes such as CLK_UP/CLK_DWN, inputs active edge and Enable input polarity.

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