Overview

EcoSpin Motor Controller ECS640A is a 3−phase BLDC

configurable motor control system in package that integrates an

ultra−low−power optimized Arm Cortex−M0+ microcontroller

(Nebo−40−64), three sense amplifiers and a reference amplifier

(NCS20034), three bootstrap diodes, and a high−voltage gate−driver

designed for high−voltage, high−speed operation, with the ability to

drive MOSFETs and IGBTs operating up to 600 V (FAN73896). Six

gate driver outputs provide sink/source of 350 mA/650 mA (typ) gate

current to external power devices. The device includes Hall Sensor

inputs to support either sensored or sensorless operation. Three

independent low−side source pins allow for single or multiple shunt

measurement.

Protection functions include under−voltage lockout and inverter

over−current trip with an automatic fault−clear function. An

open−drain fault signal is provided to indicate that a fault condition

has occurred.

Direct Torque & Flux Control (DTFC) firmware is available and

allows optimal motor performance on the Arm Cortex−M0+ platform.

The small footprint and integration make this device a perfect fit

with discrete power devices to maximize scalability across platforms

and to minimize area requirements as power levels scale.

Features

• Arm Cortex−M0+ (Nebo−40−64)

♦ 40 MHz Clock Frequency

♦ 8 kB RAM Memory

♦ 64 kB Flash Memory

• 600 V Gate Driver (FAN73896)

♦ 350 mA/650 mA Sourcing/Sinking Current Driving Capability

• 4 Sense Amps for Current Sensing (NCS20034)

• Integrated Bootstrap Diodes

• Communication: I2C, UART and SPI

• Firmware Available, Sensorless Direct Torque and Flux Control

• Max Power Dissipation: 1.8 W

• Temperature Range: −40 to 105°C

• These are Pb−Free Devices

Typical Applications

• Three−Phase Brushless DC (BLDC) Sensorless Motor Control

• Three−Phase Brushless DC (BLDC) Sensor Based Motor Control