60 MHz C28x core — real-time control loop headroom
Its 60 MHz C28x core executes single-cycle MAC and 32-bit integer math, which keeps the current-regulation loop under 2 µs in a typical field-oriented motor drive. The 128 KB on-chip Flash (64K x 16) holds the application firmware plus a bootloader for field updates over CAN or SCI, and the 10K x 16 RAM provides enough workspace for two concurrent PID state machines without external memory.
The 13-channel 12-bit ADC samples three-phase currents and a DC-link voltage simultaneously, while the built-in PWM module with dead-band insertion drives the IGBT or MOSFET bridge directly.
56-VQFN with exposed pad — thermal and layout notes
The 56-VQFN (7x7 mm) package with exposed thermal pad requires a via-stitched ground plane under the paddle to keep junction temperature within limits during continuous PWM operation at 60 MHz. The 26 available GPIOs cover the ADC inputs, PWM outputs, and two serial buses with a few pins left for a pushbutton or fault LED.
For dual-sourcing resilience, the F280041PZQR is a functional alternative in the same Piccolo family — it runs at 100 MHz and adds a 2-channel 12-bit DAC, but the pinout and peripheral map differ, so a board spin is required.