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Motor Gate Drivers for Functional Safety Designs

Robust Safety Features for Critical Systems Driven by Motors 

The increasing complexity of functions in today’s cars is escalating the importance of functional safety standards. Driver assistance and safety systems in modern cars need robust and dependable electronic components. Safety risks resulting from hardware, random failures or systematic hardware/software errors must be reduced as far as reasonably practicable throughout the product’s foreseeable lifetime.

Guidelines and standards have been developed for the process, the technology and the methods used for implementing functional safety in embedded designs. The aim of the functional safety standards is to prevent unacceptable risks caused by malfunctions in electrical or electronic systems, such as safety-critical systems driven by motors. Implementing robust safety measures in these systems can dramatically reduce the risk of incorrect behavior in motor applications.

Our motor gate drivers listed in the table below offer a variety of safety features to help you design a more robust motor application.

Functional Safety Documentation

Functional safety documentation for the devices listed below is available on our purchasing portal.

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System Reset, Detect and Manage

Feature MCP8021
MCP8022		 MCP8025A MCP8026 Fault
Prevention		 Self
Diagnostic		 System
Diagnostic		 Fault
Mitigation
Power-on Reset (PoR) ● ● ●     ✔ ✔
VDD Input Undervoltage ● ● ● ✔ ✔ ✔ ✔
VDD Input Overvoltage ● ● ● ✔ ✔ ✔ ✔
VREG Output Undervoltage ● ● ●     ✔ ✔
External MOSFET Undervoltage ● ● ● ✔ ✔ ✔ ✔
Overcurrent Protection (OCP) ● ● ● ✔ ✔ ✔ ✔
TXD Dominant Timeout   ●       ✔ ✔
Overtemperature Shutdown ● ● ● ✔ ✔ ✔ ✔
Overtemperature Detection ● ● ●     ✔ ✔

GPIO ESD Protection

Feature MCP8021
MCP8022		 MCP8025A MCP8026 Fault
Prevention		 Self
Diagnostic		 System
Diagnostic		 Fault
Mitigation
ESD Protection ● ● ● ✔      

For additional information about our functional safety-enabled products and supporting documentation, please visit our Functional Safety page.

Legend:
● Available in all devices
○ Available in some devices
- Not Available

 Definitions:
Fault Prevention - Silicon feature that prevents damage, unintended configuration changes or invalid operation
Self-Diagnostic - Silicon/software feature that identifies if the silicon is working as it should be
System Diagnostic - Silicon/software feature that identifies if the system is working as it should be
Fault Mitigation - Silicon feature that can be used by the system to transition to a safe state after a fault is detected