Texas Instruments TMS320F28052FPNT

Overview

TMS320F28052FPNT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated CLA accelerator, 12-bit 2-MSPS ADC, 7 analog comparators (2 with internal DACs), 4 programmable gain amplifiers, and 14 ePWM channels - designed for closed-loop motor control in AC-input BLDC drives, inverter systems, and air conditioner outdoor units.

For engineers reviewing the TMS320F28052FPNT datasheet, TMS320F28052FPNT pinout, TMS320F28052FPNT application, or TMS320F28052FPNT equivalent, key selection factors include its 80-pin LQFP package, single 3.3-V supply operation, dual-zone security, on-chip VREG, and analog front-end integration enabling direct PWM trip control without external signal conditioning.

Technical Context

The TMS320F28052FPNT implements a Harvard-architecture 32-bit C28x CPU with atomic instructions and fast interrupt response, paired with an independent 32-bit floating-point CLA for parallel real-time control loop execution. Its analog subsystem includes two ADC groups (16 total channels), dual sample-and-hold, and configurable PGA gain modes (≈3, 6, or 11) routed to comparator outputs.

Clock management uses two internal zero-pin oscillators or external crystal/XCLKIN, with missing-clock detection and watchdog timer support. The device integrates boot ROM (12K × 16), OTP (1K × 16), and secure memory zones protected by 128-bit key lock - all operating within –40°C to 105°C (T-grade) industrial temperature range.

Key Specifications

Pinout & Package

80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm body size, 0.5-mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28054PN, the TMS320F28052FPNT offers cost-optimized Flash size (32K) and no CLA - suitable for simpler FOC implementations. Against TMS320F28052MPT, it provides full memory access and standard firmware flexibility, making it preferable for custom control development.

Availability

TMS320F28052FPNT is available at Aetrix Electronics and suitable for air conditioner outdoor units, inverter & motor control systems, and AC drive control modules requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TMS320F28052FPNT 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, embedded processing, and digital signal processing technologies with over 50 years of innovation in industrial and automotive electronics.

The TMS320F2805x product line delivers entry-performance real-time MCUs optimized for cost-sensitive motor control and digital power applications, integrating high analog density and C28x computational efficiency in compact packages.

FAQ

What is the maximum ADC sampling rate supported by the TMS320F28052FPNT?

The TMS320F28052FPNT supports a maximum ADC sampling rate of 2 MSPS with 12-bit resolution. This performance is achieved using dual sample-and-hold circuitry and optimized interface latency, enabling accurate current and voltage capture in high-frequency motor control loops. The ADC conversion time is specified at 500 ns, consistent across all 16 input channels in Groups A and B. TMS320F28052FPNT uses ratio-metric referencing (VREFHI/VREFLO) for robustness against supply variation.

Does the TMS320F28052FPNT include a programmable gain amplifier (PGA)?

Yes, the TMS320F28052FPNT integrates four programmable gain amplifiers (PGAs) with discrete gain settings of approximately 3, 6, or 11. These PGAs are part of the analog front end and connect directly to comparator inputs, allowing signal conditioning of current-sense or position-feedback signals before comparison or ADC conversion. TMS320F28052FPNT's PGA configuration is hardware-configurable and does not require CPU intervention during operation.

What package type and pin count does the TMS320F28052FPNT use?

The TMS320F28052FPNT uses an 80-pin Low-Profile Quad Flatpack (LQFP) package with a 12.0 mm × 12.0 mm body size and 0.5-mm pitch. This package is RoHS-compliant and supports surface-mount assembly. All 42 GPIO pins are multiplexed with peripheral functions including ePWM, eCAP, eQEP, SCI, SPI, I²C, and eCAN, as documented in the device's pin diagram and signal descriptions. TMS320F28052FPNT shares this package with other F2805x family members for design reuse.

How does the TMS320F28052FPNT handle power supply requirements?

The TMS320F28052FPNT operates from a single 3.3-V supply, with internal voltage regulation generating the required 1.8-V core voltage. The VREGENZ pin (Pin 71) controls this function: tying it low enables the internal VREG, while pulling it high disables it for external 1.8-V supply use. No power sequencing is required. TMS320F28052FPNT specifies separate VDD (core), VDDA (analog), and VDDIO (I/O) rails, each requiring dedicated decoupling capacitors per datasheet guidelines.

Is the TMS320F28052FPNT qualified for automotive applications?

No, the TMS320F28052FPNT is rated for industrial temperature range (–40°C to 105°C, T-grade) and is not AEC-Q100 qualified. For automotive applications, Texas Instruments offers the TMS320F28052QPNS variant (Q-grade), which undergoes AEC-Q100 stress testing and supports –40°C to 125°C operation. TMS320F28052FPNT lacks the automotive qualification documentation, screening, and guaranteed lifetime reliability data required for vehicle systems.