Texas Instruments TMS320F28020PTS

Overview

TMS320F28020PTS from Texas Instruments is a 32-bit C28x-core microcontroller optimized for real-time motor and power control, operating at 40 MHz (25-ns cycle time), featuring 8 kB flash, 3 kB SARAM, 32-bit CPU timers, ePWM with HRPWM, 12-bit ADC (2 MSPS, 7 channels), and integrated comparators. It targets cost-sensitive industrial inverter and BLDC drive applications.

For engineers reviewing the TMS320F28020PTS datasheet, TMS320F28020PTS pinout, TMS320F28020PTS application, or TMS320F28020PTS equivalent, key selection considerations include its 48-pin LQFP package, 40-MHz deterministic timing, on-chip VREG enabling single 3.3-V supply operation, and peripheral integration including SCI, SPI, I²C, and dual analog comparators with direct PWM routing.

Technical Context

The TMS320F28020PTS implements the fixed-point TMS320C28x CPU core with Harvard architecture, atomic instructions, and unified memory model-enabling efficient C/C++ execution in closed-loop control. Its clock system includes dual zero-pin oscillators, crystal support via X1/X2, and PLL-based frequency synthesis.

Peripheral integration centers on real-time actuation: eight ePWM channels (four with high-resolution capability), two analog comparators with internal 10-bit references, and a 12-bit ADC with dual sample-and-hold supporting ratio-metric VREFHI/VREFLO referencing and 500-ns conversion time per channel.

Key Specifications

Pinout & Package

Package: 48-pin Low-Profile Quad Flatpack (LQFP), 7.0 mm × 7.0 mm body size, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28021PT and TMS320F28022PT, the TMS320F28020PTS provides the minimal viable memory and analog resource set for cost-optimized single-axis motor control-retaining full code compatibility while reducing flash overhead and simplifying layout verification.

Availability

TMS320F28020PTS is available at Aetrix Electronics and suitable for air conditioner outdoor units, micro inverters, and AC-input BLDC motor drives requiring stable component supply across extended production lifecycles.

Supply support for TMS320F28020PTS 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 delivering analog and embedded processing solutions for industrial, automotive, and consumer applications.

The TMS320F28020PTS belongs to TI's C2000™ real-time microcontroller product line, designed specifically for deterministic closed-loop control in power electronics, motor drives, and digital power conversion systems.

FAQ

What is the maximum operating frequency of the TMS320F28020PTS?

The TMS320F28020PTS operates at a maximum CPU frequency of 40 MHz, corresponding to a 25-ns instruction cycle time. This frequency is achieved using the internal PLL with either the on-chip zero-pin oscillator or an external crystal connected to X1/X2. The device does not support higher frequencies like the 60-MHz TMS320F28027 variants.

Does the TMS320F28020PTS include an integrated voltage regulator?

Yes, the TMS320F28020PTS includes an on-chip voltage regulator (VREG) that generates the 1.8-V core supply from a single 3.3-V rail. This eliminates external regulators and power sequencing requirements-simplifying board design and reducing bill-of-materials cost for space-constrained applications.

How many ePWM channels does the TMS320F28020PTS support, and which support high-resolution mode?

The TMS320F28020PTS supports eight ePWM channels (ePWM1A/B through ePWM4A/B). Four of these-ePWM1A, ePWM2A, ePWM3A, and ePWM4A-support high-resolution PWM (HRPWM) mode, enabling sub-nanosecond dead-time control and fine-grained duty-cycle adjustment critical for SiC/GaN gate driver timing.

What analog peripherals are integrated into the TMS320F28020PTS?

The TMS320F28020PTS integrates a 12-bit, 2-MSPS ADC with seven input channels (Group A), two analog comparators with internal 10-bit DAC references, and six analog-capable I/O pins (AIO2, AIO4, AIO6, AIO10, AIO12, AIO14). It does not include the 13-channel ADC or second comparator found in higher-tier F28022/F28023 variants.

Is the TMS320F28020PTS pin-compatible with other F2802x family members in the 48-pin LQFP package?

Yes, the TMS320F28020PTS shares identical pinout and electrical characteristics with other 48-pin PT variants in the F2802x family-including TMS320F28021PT, TMS320F28022PT, and TMS320F28023PT-ensuring hardware compatibility across firmware-upgradable designs and facilitating drop-in replacement during qualification.