S08SU16-EVK: 4.5 ~ 8V, 15A, Drone Electronic Speed Control (ESC)

The NXP ESC-MC9S08SU16 reference board is a set of hardware tools for a drone electronic speed control (ESC). It is an ideal tool for the rapid prototyping of microcontroller-based applications.

The ESC-MC9S08SU16 supports a power supply voltage range from 4.5 V to 18 V. It features a MC9S08SU16, a device boasting a maximum operating frequency of 40 MHz, up to 16 KB Flash, 768 Bytes Ram size, and numerous analog and digital peripherals. The GDU is the highlight of this MCU. It integrates the pre-driver and decreases the bill of material (BOM) cost.

The ESC-MC9S08SU16 includes a debug adapter known as background debug mode (BDM). This circuit offers serial communications, flash programming, and run-control debugging.

The software development tool for ESC–MC9S08SU16 is Codewarrior10.7. It supports the user in programming and debugging.

This application demonstrates low-power 3-phase brushless DC (BLDC) motor drive software. It is focused on a simple and easy to understand control approach to BLDC in a time-critical application. This includes a sensorless BLDC drive which uses back electromotive force(BEMF) sensing for position recognition. It serves as an example of a BLDC motor control system for drone ESC applications.

Features:

• Compact PCB design (80 x 37 mm)

• 3x P+N MOSFET pair

• Single PWM duty control

• 3x phase comparator for zero-crossing detection

• Over current/voltage protection (OCP and OVP)

• Interfaces

  ~ I2C

  ~ SCI

  ~ PWT

• Debugging

  ~ Real-time in-circuit debug through S08/RS08 or HCS12 BDM interface

  ~ FreeMASTER debug tool