Texas Instruments TMS320F28050PNT

Overview

TMS320F28050PNT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated analog front-end (6 comparators, 2 internal DACs, 1 buffered reference DAC, 3 PGAs), 12-bit 2-MSPS ADC, ePWM, eCAP, eQEP, and dual-zone security. It operates from a single 3.3-V supply and targets motor control in AC-input BLDC drives, inverter systems, and door operator controllers.

For engineers reviewing the TMS320F28050PNT datasheet, TMS320F28050PNT pinout, TMS320F28050PNT application, or TMS320F28050PNT equivalent, key selection criteria include its 80-pin LQFP package, 60-MHz CPU clock, 16-channel 12-bit ADC with 500-ns conversion time, dual-zone security, and support for InstaSPIN-FOC firmware acceleration in closed-loop motor control designs.

Technical Context

The TMS320F28050PNT implements a Harvard-architecture 32-bit C28x CPU running at 60 MHz (16.67-ns cycle time) with atomic operations and fast interrupt response. Its analog subsystem includes six comparators-each configurable with internal 6-bit references-and three programmable gain amplifiers supporting discrete gains of ≈3, 6, or 11.

It integrates a 12-bit ADC with 16 input channels, 2-MSPS sampling rate, and 500-ns conversion time, using ratio-metric VREFHI/VREFLO references. The device supports up to 42 GPIO pins, three 32-bit CPU timers, one eQEP module, one eCAN bus, and three SCI/UART interfaces-all multiplexed on the 80-pin LQFP package.

Key Specifications

Pinout & Package

Package: 80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm body size, standard JEDEC footprint with exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28050PNT, the TMS320F28052PNT adds 32K flash and 2K SARAM plus one extra comparator and DAC, enabling richer firmware features; the TMS320F28051PNT retains full analog/peripheral parity while offering optimized memory layout - both require no PCB changes but offer higher resource headroom for future firmware expansion.

Availability

TMS320F28050PNT is available at Aetrix Electronics and suitable for industrial motor drives, HVAC outdoor units, and door operator systems requiring stable component supply across multi-year production cycles.

Supply support for TMS320F28050PNT 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 headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The TMS320F2805x family belongs to TI's C2000™ real-time control MCU portfolio, designed specifically for high-precision closed-loop control in motor drives, digital power, and renewable energy systems - emphasizing analog integration, deterministic timing, and functional safety readiness.

FAQ

What is the maximum ADC sampling rate supported by the TMS320F28050PNT?

The TMS320F28050PNT supports a 12-bit ADC with a maximum sampling rate of 2 MSPS and a conversion time of 500 ns. This performance enables accurate current and voltage measurement in high-frequency motor control loops, such as those used in 20-kHz PWM-driven BLDC inverters. The ADC uses ratio-metric VREFHI/VREFLO references and supports dual sample-and-hold for simultaneous sampling across multiple channels.

Does the TMS320F28050PNT include a hardware security module?

Yes, the TMS320F28050PNT includes a dual-zone security module with 128-bit encryption key locking. This feature protects on-chip flash, SARAM, OTP, and secure ROM from unauthorized read access and firmware reverse-engineering. The security implementation is hardware-enforced and does not rely on software-only locks, making it suitable for production deployments where IP protection is mandatory.

What package type and pin count does the TMS320F28050PNT use?

The TMS320F28050PNT uses an 80-pin Low-Profile Quad Flatpack (LQFP) package with a 12.0 mm × 12.0 mm body size. This JEDEC-standard footprint supports 42 multiplexed GPIO pins and integrates all required peripherals - including ePWM, eCAP, eQEP, eCAN, SCI/UART, SPI, and I²C - without requiring external interface ICs in typical motor control layouts.

Can the TMS320F28050PNT operate from a single 3.3-V supply?

Yes, the TMS320F28050PNT operates from a single 3.3-V supply using its integrated 1.8-V voltage regulator (VREG). The VREGENZ pin controls regulator enable/disable: tying it low enables the internal VREG, eliminating external DC/DC converters. This architecture reduces system cost and board area while maintaining full functionality across the –40°C to 105°C temperature range.

How many enhanced PWM (ePWM) modules does the TMS320F28050PNT support?

The TMS320F28050PNT supports 14 enhanced PWM (ePWM) modules, each with independent time-base, compare, and action qualifier units. These modules provide high-resolution (150-ps step) dead-band generation, trip-zone inputs for hardware fault shutdown, and synchronization capabilities - essential for three-phase inverter gate driving with precise timing and safety compliance.