Fail Safe Motor Control

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• Overview
• Block Diagram
• Recommended Products
• Evaluation and Development Boards

Overview

In the industrial world, it is critical to incorporate fail-safe technology where possible in applications such as crane steering machines, robotic lift, and assembly line robots to name a few. By doing so, you ensure you meet Safety Integrity Level (SIL) standards as found in the IEC 61508 standard. Also, you significantly increase human safety and protect products and property.

This fail Safe Motor Control solution incorporates the MPC574xP family of MCUs that delivers the highest functional safety standards for industrial applications. The MPC574xP family incorporates a lockstep function that serves as a watchdog function to flag any problems with the MCU including a programmable Fault Collection and Control Unit (FCCU) that monitors the integrity status of the MCU and provides flexible safe state control. Also, this device is a part of the SafeAssure® program, helping manufacturers achieve functional safety standard compliance.

Block Diagram

Recommended Products

Category	Products	Features
Power Switch	12XS2 | 12 V Low RDSON eXtreme Switch | NXP	Watchdog and configurable Fail-safe mode by hardware Authentication time (on-chip calculations) < 50 ms Programmable overcurrent trip level and overtemperature protection, undervoltage shutdown, and fault reporting Output current monitoring
Pressure Sensor	MPXHZ6130A|Pressure Sensor | NXP	The MPXHZ6130A series sensor integrates on-chip, bipolar op amp circuitry and thin-film resistor networks to provide a high output signal and temperature compensation for automotive, aviation, and industrial applications.
Temperature Sensor	https://www.nxp.com/products/sensors/silicon-temperature-sensors/silicon-temperature-sensors:KTY8X	High accuracy and reliability Long-term stability Positive temperature coefficient; fail-safe behavior
MOSFET Pre-driver	GD3000 |3-phase Brushless Motor Pre-Driver | NXP	Fully specified from 8.0 to 40 V covers 12 and 24 V automotive systems Extended operating range from 6.0 to 60V covers 12 and 42 V systems Greater than 1.0 A gate drive capability with protection
Power Management and Safety Monitoring	MC33908 | Safe SBC | NXP	Enhanced safety block associated with fail-safe outputs Designed for ASIL D applications (FMEDA, Safety manual) Secured SPI interface

Evaluation and Development Boards

Link	Description
MPC5744P Development Kit for 3-phase PMSM | NXP	The NXP MTRCKTSPS5744P motor control development kit is ideal for applications requiring one PMSM motor, such as power steering or electric powertrain.
Evaluation daughter board - NXP MPC5744P, 32-bit Microcontroller | NXP	The KITMPC5744DBEVM evaluation board features the MPC5744P, which is the second generation of safety-oriented microcontrollers, for automotive and industrial safety applications