Eight windowed comparators are integrated into the Delfino F2837xD MCU architecture, providing “trip points,” and operate independently from the CPU so there is no additional CPU loading. The comparators are also fast acting (50 ns reaction to trip!) and CPU independent to minimize latency with trip signals so the system can react quickly to any abnormal events or over/under limit conditions. The comparator trip events can be configured to help provide a full shut down action in the case of a catastrophic event, making the system more resilient in industrial drive and servo systems.
The on-chip X-BARs provide a flexible means for interconnecting multiple inputs, outputs, and internal resources in various configurations. The F2837xD contains three X-BARs: the Input X-BAR, the Output XBAR, and the ePWM X-BAR. These resource are helpful in many ways to the system developer but are particularly helpful in routing the many potential on-chip and off-chip sources to the PWM Trip Zones, thus, providing the designer with many flexible approaches for protection without requiring external logic and creating better utilization of the microcontrollers I/O.