PTC Heater Technical Solution
Vehicle Interface
It is completed by the low-voltage area MCU and related functional circuits, which can realize CAN basic communication functions, bus-based diagnostic functions, EOL functions, command issuing functions, and PTC status reading functions. The power interface is composed of low-voltage area power processing circuit and isolated power supply, and both high- and low-voltage areas are equipped with EMC-related circuits;
Control Function
Can realize PTC switch function;
Can realize PTC duty cycle control.
Security Function
hardware protection
Software protection
Diagnostic Function
Low voltage voltage out of range fault
Input signal failure
High voltage area power failure
High voltage overvoltage and undervoltage fault PTC
PTC short circuit and open circuit fault
IGBT short circuit and open circuit fault
Temperature sensor failure
Over-temperature fault
