Texas Instruments F280033SPTG4

Overview

F280033SPTG4 from Texas Instruments is a C28x-based real-time microcontroller optimized for power electronics control, featuring a 120-MHz 32-bit DSP core with IEEE 754 FPU, 128KB flash (ECC-protected), 69KB RAM (ECC-protected), and 16 ePWM channels with 8 high-resolution (150-ps) outputs. It integrates three 4-MSPS 12-bit ADCs, four windowed comparators (CMPSS), two buffered DACs, and supports CAN FD, FSI (200 Mbps), and dual CAN interfaces - deployed in servo drives, solar inverters, and EV on-board chargers.

For engineers reviewing the F280033SPTG4 datasheet, F280033SPTG4 pinout, F280033SPTG4 application, or F280033SPTG4 equivalent, key selection criteria include its 48-pin LQFP (PT) package, absence of CLA and Configurable Logic Block (CLB), 128KB flash capacity, functional safety readiness (non-Q1 variant), and compatibility with TI's C2000™ real-time control ecosystem including C2000Ware and TMDSCNCD280039C evaluation hardware.

Technical Context

The F280033SPTG4 implements a deterministic real-time control architecture centered on the C28x CPU core running at 120 MHz with hardware-accelerated floating-point math (FPU), trigonometric functions (TMU), and CRC computation (VCRC). Its analog subsystem tightly couples three 12-bit ADCs (4 MSPS) with post-processing blocks and four CMPSS modules for fast over/under-voltage trip generation.

Control execution is enhanced by 16 ePWM channels (8 with 150-ps resolution), integrated dead-band logic, hardware trip zones (TZ), and two eQEP modules supporting CW/CCW position sensing. Communication is enabled via one DCAN, one MCAN (CAN FD), two SPI, two SCI, two I²C, two LIN, one PMBus, and one FSI interface - all accessible through pin multiplexing on the 48-pin LQFP footprint.

Key Specifications

Pinout & Package

Package: 48-pin Low-profile Quad Flatpack (LQFP), PT suffix, 9 mm × 9 mm body size, 0.5 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar real-time control applications.

Compared with F280034PTG4, F280033SPTG4 lacks CLA and CLB-reducing silicon cost and power while retaining identical PWM, ADC, CAN FD, and FSI capabilities. Against F280037PTG4, it trades 128KB less flash for identical real-time control latency and peripheral set in the 48-pin footprint.

Availability

F280033SPTG4 is available at Aetrix Electronics and suitable for servo drives, solar microinverters, EV on-board chargers, and industrial AC-DC power supplies requiring stable component supply, long-term lifecycle assurance, and automotive-grade reliability validation.

Supply support for F280033SPTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 90 years of innovation in power management and real-time control.

The TMS320F28003x product line was designed specifically for ultra-low-latency, high-precision power electronics control - targeting motor drives, renewable energy, EV infrastructure, and digital power systems where deterministic timing and analog integration are critical.

FAQ

What is the maximum operating frequency of the C28x CPU in the F280033SPTG4?

The F280033SPTG4 features a C28x 32-bit DSP core operating at 120 MHz. This clock speed is fixed and delivered via an internal PLL driven by either the 10-MHz internal oscillator or an external crystal/clock source. All instruction execution, interrupt latency, and peripheral timing-including ePWM and ADC sampling-are synchronized to this 120-MHz system clock, ensuring deterministic real-time behavior essential for power converter control loops.

Does the F280033SPTG4 include a Control Law Accelerator (CLA)?

No, the F280033SPTG4 does not include a Control Law Accelerator (CLA). According to TI's official device comparison table (SPRSP61C), CLA is absent in all F280033 variants. This distinguishes it from F280034 and higher variants (e.g., F280037C, F280039C) which integrate a 120-MHz CLA for parallel floating-point math execution. The F280033SPTG4 relies solely on the main C28x CPU for control law computation.

What analog-to-digital conversion capability does the F280033SPTG4 provide?

The F280033SPTG4 integrates three independent 12-bit analog-to-digital converters (ADCs), each capable of 4 million samples per second (4 MSPS). In the 48-pin PT package, up to 14 external analog input channels (ADCINA0–ADCINA13) are accessible. Each ADC includes four post-processing blocks (PPB) for hardware-based filtering, averaging, and offset/gain correction - enabling high-fidelity current/voltage sensing in motor drives and power supplies without CPU overhead.

Which CAN interfaces are supported on the F280033SPTG4?

The F280033SPTG4 supports two physically separate CAN interfaces: one DCAN (Controller Area Network) module compliant with ISO 11898-1 (up to 1 Mbps), and one MCAN (CAN FD) module compliant with ISO 11898-1 and ISO 11898-7 (up to 5 Mbps data phase). Both interfaces are fully functional in the 48-pin PT package and share no signal pins - allowing simultaneous use for legacy diagnostics (DCAN) and high-bandwidth BMS communication (MCAN).

Is the F280033SPTG4 qualified for automotive applications?

The F280033SPTG4 is not AEC-Q100 qualified. TI offers the automotive-grade variant F280033-Q1 (with PN or PT package) for automotive applications. The F280033SPTG4 is a commercial-temperature version rated for –40°C to 125°C ambient operation and intended for industrial, solar, and EV charging infrastructure where AEC-Q100 certification is not mandated. Functional safety documentation (e.g., FIT rate, failure modes) applies only to Q1 variants.