5 Summary

The configurable logic block within C2000 devices can be interfaced with the output of delta-sigma modulators to understand potential fault scenarios and implement fail-safes. The AMC1306 device being used in this software example has built-in fail-safe conditions which affect the DOUT output bitstream in specific ways. By feeding the DOUT signal into the C2000 device, the CLB can be used to monitor system faults, such as missing AVDD, input voltage out of full-scale range, and input voltage out of common-mode input range. This software implementation is compatible with other types of modulators featuring similar device functional modes, such as AMC1336, and can be applied to any system, like motor drives or solar inverters, where current sensing is an integral function. These monitoring functions can help support functional safety. It can ensure safety-critical operation and has the potential to reduce system costs by performing logical operations on-chip without the need for external logic devices.