Texas Instruments TMS320F28075PTPS

Overview

TMS320F28075PTPS from Texas Instruments is a 120MHz C28x 32-bit floating-point real-time microcontroller with IEEE 754 FPU, Trigonometric Math Unit (TMU), and independent 120MHz Control Law Accelerator (CLA). It integrates 512KB ECC-protected flash, 100KB RAM (ECC/parity), three 12-bit ADCs (3.1MSPS each), 24 ePWM channels (16 HRPWM), dual CAN, USB 2.0, and CLB for motor control in traction inverters and solar power converters.

For engineers reviewing the TMS320F28075PTPS datasheet, TMS320F28075PTPS pinout, TMS320F28075PTPS application, or TMS320F28075PTPS equivalent, key selection criteria include HRPWM resolution for SiC/GaN gate drive timing, CLA offloading capability for torque-loop execution, ADC simultaneous sampling across three phases, functional safety certification up to ASIL B/SIL 2, and thermal performance of the 176-pin HLQFP PowerPAD package.

Technical Context

The TMS320F28075PTPS implements a dual-core real-time architecture: the C28x CPU handles system-level tasks while the CLA executes time-critical control loops-such as field-oriented control (FOC) or sensorless estimation-in parallel without CPU intervention. Its analog subsystem supports simultaneous sampling across three independent 12-bit ADCs with hardware post-processing including windowed comparators, DAC-referenced trip generation, and saturation calibration.

Peripherals are optimized for high-fidelity power conversion: 16 HRPWM channels deliver sub-nanosecond dead-time control on both A/B legs; six eCAP modules capture precise edge timing for encoder or resolver feedback; and SDFM interfaces support sigma-delta current sensors with fast out-of-range detection. The device operates at –40°C to 105°C junction temperature and includes dual internal 10MHz oscillators plus crystal oscillator support.

Key Specifications

Pinout & Package

Package: 176-pin PowerPAD™ Thermally Enhanced Low-Profile Quad Flatpack (HLQFP), 26mm × 26mm body, exposed thermal pad soldered to PCB ground plane for optimal thermal conduction and digital grounding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28075PTPS, TMS320F28076PTP delivers enhanced configurability for advanced motion algorithms, while TMS320F280049CPTP offers reduced cost and footprint at the expense of computational throughput, analog concurrency, and safety certification-making TMS320F28075PTPS the balanced choice for ASIL B–compliant, high-fidelity power conversion.

Availability

TMS320F28075PTPS is available at Aetrix Electronics and suitable for traction inverter motor control, solar string inverter design, and EV DC charging station power modules requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.

Supply support for TMS320F28075PTPS 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 company specializing in analog and embedded processing technologies, with leadership in real-time control, power management, and signal chain solutions.

The TMS320F28075PTPS belongs to TI's C2000™ Premium performance MCU line, designed specifically for high-accuracy, high-bandwidth closed-loop control in power electronics, motor drives, and renewable energy systems.

FAQ

What is the operating temperature range for the TMS320F28075PTPS?

The TMS320F28075PTPS is rated for a junction temperature range of –40°C to 105°C (industrial grade, 'T' suffix). This rating is validated per JEDEC JESD22-A104 and supports deployment in under-hood automotive power modules and industrial inverters without forced cooling. The thermal design leverages the exposed PowerPAD on the 176-pin HLQFP package for efficient heat dissipation into the PCB ground plane. TMS320F28075PTPS maintains full specification compliance across this range, including ADC accuracy, PWM timing, and flash retention.

Does the TMS320F28075PTPS support functional safety certification?

Yes, the TMS320F28075PTPS is ISO 26262 certified up to ASIL B and IEC 61508 certified up to SIL 2 by TÜV SÜD. Certification covers hardware integrity, diagnostic coverage, and failure-in-time (FIT) data. Documentation-including safety manuals, FMEDA reports, and diagnostic software libraries-is provided by Texas Instruments to support system-level compliance up to ASIL D (ISO 26262) and SIL 3 (IEC 61508). TMS320F28075PTPS includes hardware features such as ECC on flash/RAM, windowed watchdog, and clock failure detection to meet these requirements.

How many high-resolution PWM channels does the TMS320F28075PTPS provide?

The TMS320F28075PTPS provides 16 High-Resolution PWM (HRPWM) channels across eight ePWM modules, with both A and B outputs of each module supporting sub-nanosecond resolution. This enables precise dead-time insertion, phase-shifted carrier modulation, and adaptive gate drive for wide-bandgap devices. Each HRPWM channel achieves <150ps step resolution and supports independent trip-zone (TZ) inputs for immediate fault shutdown. TMS320F28075PTPS uses this capability for SiC/GaN inverter control where timing margin is critical.

Can the TMS320F28075PTPS execute control code independently of the main CPU?

Yes, the TMS320F28075PTPS includes a dedicated Control Law Accelerator (CLA) - a 32-bit floating-point coprocessor running at 120MHz, fully independent of the main C28x CPU. The CLA responds to peripheral interrupts (e.g., ADC end-of-conversion, ePWM timer overflow) and executes control law code stored in shared RAM or CLA-specific RAM. This allows concurrent execution: for example, the CLA can run inner-current loops while the C28x CPU manages communications, diagnostics, and outer-position loops. TMS320F28075PTPS uses this architecture to achieve deterministic sub-microsecond control latency without CPU scheduling jitter.

What analog peripherals are integrated into the TMS320F28075PTPS?

The TMS320F28075PTPS integrates three 12-bit analog-to-digital converters (ADCs), each capable of 3.1MSPS sampling with simultaneous start capability; eight windowed comparators (CMPSS) with 12-bit DAC references for ultra-fast overvoltage/overcurrent tripping; and three 12-bit buffered DAC outputs for reference generation or analog feedback. Each ADC includes a dedicated sample-and-hold circuit and hardware post-processing (e.g., offset calibration, error-from-setpoint calculation). TMS320F28075PTPS uses this analog subsystem to monitor all three motor phases concurrently while maintaining independent fault response paths.