Kit eliminates costly resolver-to-digital conversion

Because the resolver is an analog, rotary electrical transformer, it has historically required an application-specific circuit (which can be costly and space consuming) to convert to digital signals for use by a digital processor in a control system.

The C2000 MCU Resolver Kit replaces expensive, dedicated resolver-to-digital chipsets with low-cost MCUs to simplify and reduce cost in systems. It extends functionality by allowing an MCU to handle resolver-to-digital decoding, as well as other software programmable real-time functions, such as additional analog-to-digital converter sampling and processing, encoder and hall interfaces, digital signal processing front-end, state logic, tasks to assist with functional safety and full control loops.

The kit provides complete hardware and consists of a C2000 controlCARD-compatible printed circuit board with on-board JTAG emulation for software debug, a resolver interface with filtering, UART and SPI interfaces, four digital-to-analog converter outputs for debug and a 15V power supply. It supports four software project variants running on three different C2000 controlCARDs (all purchased separately): TMDSCNCD28335 (floating-point), TMDSCNCD28035 (fixed-point or parallel control law accelerator) and TMDSCNCD28027 (fixed-point).

Included with the kit is a free download of C2000 controlSUITE and Code Composer Studio integrated development environment, as well as a full build of materials, schematics and PCB design files.

The C2000 MCU Resolver Kit (TMDSRSLVR) is available today for $179 (USD). C2000 controlCARDs are available separately starting at $49 (USD). The controlSUITE software and documentation are available for download. The C2000 MCUs capable of running the resolver software are available starting from a suggested retail price of $1.85 (USD) in 1,000 unit quantities (TMS320F280200).