Texas Instruments TMS320F28031PAGS

Overview

TMS320F28031PAGS from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated control peripherals, designed for digital power and motor control systems. It delivers 16.67-ns instruction cycle time, 12 ePWM channels, 14-channel 12-bit ADC (2.0 MSPS), and on-chip 32KB Flash/8KB SARAM - enabling closed-loop execution in EV charging modules, solar inverters, and industrial DC/DC converters.

For engineers reviewing the TMS320F28031PAGS datasheet, TMS320F28031PAGS pinout, TMS320F28031PAGS application, or TMS320F28031PAGS equivalent, key selection criteria include its 64-pin TQFP package, -40°C to 125°C temperature rating (S-grade), CLA absence, and compatibility with C28x-based firmware across the F2803x family.

Technical Context

The TMS320F28031PAGS implements a Harvard-architecture 32-bit C28x CPU with atomic operations and fast interrupt response, optimized for deterministic real-time control loops. Its peripheral set includes ePWM with dead-band generation, eCAP, eQEP, and dual-sample-and-hold ADC - all synchronized via PIE and accessible by CPU without DMA overhead.

It integrates analog comparators with internal 10-bit references routed directly to PWM trip zones, supports ratio-metric ADC referencing (VREFHI/VREFLO), and uses an internal voltage regulator for single 3.3-V rail operation - eliminating external sequencing requirements while maintaining ±1% VDD tolerance over temperature.

Key Specifications

Pinout & Package

64-pin Thin Quad Flatpack (TQFP), body size 10.0 mm × 10.0 mm, lead pitch 0.5 mm, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28031PAGS, the TMS320F28032PAGS adds encoder interface capability without increasing code footprint, while the TMS320F28034PAGS provides hardware-accelerated math and expanded memory - making it suitable for next-generation digital power designs requiring higher computational throughput.

Availability

TMS320F28031PAGS is available at Aetrix Electronics and suitable for EV charging power modules, solar string inverters, and industrial DC/DC converters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TMS320F28031PAGS 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and power applications.

The TMS320F28031PAGS belongs to TI's C2000™ real-time control MCU portfolio, engineered specifically for high-precision closed-loop control in digital power, motor drives, and renewable energy systems.

FAQ

What is the maximum operating frequency of the TMS320F28031PAGS?

The TMS320F28031PAGS operates at a maximum CPU frequency of 60 MHz, corresponding to a 16.67-ns instruction cycle time. This is achieved using an internal PLL that multiplies an external crystal or oscillator input. The device supports multiple clock sources including on-chip zero-pin oscillators, external crystals on X1/X2, or direct external clock injection on XCLKIN - all configurable via the CLKCTL register. TMS320F28031PAGS maintains timing integrity across its full –40°C to +125°C operating range.

Does the TMS320F28031PAGS include a Control Law Accelerator (CLA)?

No, the TMS320F28031PAGS does not include a CLA. Within the F2803x family, CLA is only present in the TMS320F28033 and TMS320F28035 variants. The TMS320F28031PAGS relies solely on the C28x CPU for control law execution. This makes it suitable for applications where loop complexity fits within the 60-MHz C28x bandwidth - such as single-loop PFC or basic FOC - without requiring parallel floating-point acceleration. TMS320F28031PAGS retains full C28x instruction set compatibility with CLA-equipped variants for seamless firmware migration.

How many ADC channels does the TMS320F28031PAGS support, and what is its sampling rate?

The TMS320F28031PAGS features a 12-bit analog-to-digital converter with 14 input channels and a maximum sampling rate of 2.0 MSPS. It includes dual sample-and-hold circuitry, enabling simultaneous sampling of two channels - critical for current/voltage vector acquisition in motor control. Conversion time is 500 ns per channel, and the ADC supports ratio-metric referencing using internal VREFHI/VREFLO or external references. TMS320F28031PAGS maps ADC inputs to dedicated pins (e.g., ADCINA0–ADCINA7, ADCINB0–ADCINB7) with flexible MUX routing controlled by the ADCSOC registers.

What communication interfaces are integrated into the TMS320F28031PAGS?

The TMS320F28031PAGS integrates one enhanced Controller Area Network (eCAN) module, one Local Interconnect Network (LIN) module, two Serial Peripheral Interface (SPI) modules, one Inter-Integrated Circuit (I2C) module, and one Serial Communications Interface (SCI) compatible with UART protocols. All interfaces support programmable baud rates, FIFO buffering (4-level depth), and automatic wakeup from low-power modes. TMS320F28031PAGS dedicates specific GPIO pins to each peripheral - for example, SCITXDA/SCIRXDA on GPIO12/GPIO7 - with multiplexing managed via the GPIOCTRL registers.

Is the TMS320F28031PAGS pin-compatible with other F2803x devices in the same package?

Yes, the TMS320F28031PAGS is pin-compatible with all other F2803x devices offered in the 64-pin PAG TQFP package - including TMS320F28030PAGS, TMS320F28032PAGS, TMS320F28033PAGS, TMS320F28034PAGS, and TMS320F28035PAGS. Pin assignments for power, ground, clocks, JTAG, ADC, ePWM, and communications peripherals are identical across the family. Functional differences (e.g., presence of CLA, eQEP, or HRPWM count) do not affect pin mapping. TMS320F28031PAGS shares identical mechanical dimensions, thermal pad layout, and solder reflow profile with these variants - enabling drop-in replacement in existing PCB designs where firmware supports the feature set.