Texas Instruments TMS320F28032RSHT

Overview

TMS320F28032RSHT 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 features 32 KB on-chip Flash, 10 KB SARAM, 3× 32-bit CPU timers, 8 ePWM channels (including HRPWM), 1× eCAP, 1× eQEP, 12-bit ADC with 13 channels and 4.6 MSPS sampling rate, and dual comparators with DACs. It operates from a single 3.3-V supply and supports industrial temperature range (–40°C to 125°C).

For engineers reviewing the TMS320F28032RSHT datasheet, TMS320F28032RSHT pinout, TMS320F28032RSHT application, or TMS320F28032RSHT equivalent, key selection criteria include HRPWM resolution for high-efficiency DC/DC converters, ADC latency for closed-loop current sensing, CLA absence versus F28033/F28035, and VQFN-56 thermal performance in space-constrained inverters.

Technical Context

The TMS320F28032RSHT implements a Harvard-architecture C28x CPU executing at 60 MHz (16.67 ns cycle time) with atomic operations and fast interrupt response. Its peripheral set is optimized for real-time control: ePWM modules support dual-edge modulation via HRPWM, while the 12-bit ADC achieves 216.67 ns conversion time with ratio-metric reference support (VREFHI/VREFLO).

No Control Law Accelerator (CLA) is present-unlike F28033/F28035-so all control law execution relies solely on the C28x core. The device uses little-endian memory mapping, supports JTAG boundary scan (IEEE 1149.1), and integrates voltage regulation for single-rail 3.3-V operation without sequencing.

Key Specifications

Pinout & Package

56-pin RSH Very Thin Quad Flatpack (No Lead) VQFN package with 0.4-mm pitch and exposed thermal pad (package drawing SLMA019). Pin 1 marked by top-side dot; pins arranged in 14×4 grid.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28033PAG, the TMS320F28032RSHT lacks CLA acceleration but offers superior thermal performance in VQFN packaging; compared with TMS320F28032PAG, it delivers identical functionality in a smaller footprint with lower junction-to-board thermal resistance (30°C/W vs. 42°C/W).

Availability

TMS320F28032RSHT is available at Aetrix Electronics and suitable for DC/DC converter control, inverter & motor drive, and EV charging station power module applications requiring stable component supply across industrial and automotive production cycles.

Supply support for TMS320F28032RSHT 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 and embedded processing solutions for industrial, automotive, and consumer markets.

The TMS320F2803x family targets cost-optimized real-time control in digital power and motor drive systems, emphasizing integration of high-resolution PWM, fast ADC, and robust analog comparators in low-pin-count packages.

FAQ

What is the maximum ADC sampling rate supported by the TMS320F28032RSHT?

The TMS320F28032RSHT supports a maximum ADC sampling rate of 4.6 MSPS with 12-bit resolution. This is achieved using its internal 216.67 ns conversion time and hardware sequencer, enabling full 13-channel acquisition within a single 21.7-μs window - critical for synchronized current sensing in three-phase motor drives where TMS320F28032RSHT must capture all phases before next PWM edge.

Does the TMS320F28032RSHT include a Control Law Accelerator (CLA)?

No, the TMS320F28032RSHT does not include a Control Law Accelerator. Unlike the TMS320F28033 and TMS320F28035 variants, the TMS320F28032RSHT relies solely on its 60-MHz C28x CPU for control law execution. This makes it suitable for applications where deterministic CPU-only scheduling is preferred, such as safety-critical DC/DC converters where CLA runtime unpredictability must be avoided.

What package type and thermal characteristics does the TMS320F28032RSHT use?

The TMS320F28032RSHT uses a 56-pin RSH VQFN package (7 mm × 7 mm, 0.4-mm pitch) with an exposed thermal pad. Its junction-to-board thermal resistance is 30°C/W, enabling reliable operation at 2.5 W dissipation in compact power modules. This package supports automated optical inspection and offers better thermal performance than the 64-pin TQFP variant (TMS320F28032PAG) in space-constrained EV charging applications.

Can the TMS320F28032RSHT operate from a single 3.3-V supply?

Yes, the TMS320F28032RSHT operates from a single 3.3-V nominal supply with no power sequencing requirement. Its integrated voltage regulator generates internal 1.8-V and 1.2-V rails, simplifying power design for cost-sensitive applications like solar optimizers and small inverters. External decoupling (100 nF + 10 μF per VDD/VDDIO pair) is required per TI's layout guidelines to maintain ADC SNR and PWM timing stability.

Which communication interfaces are integrated into the TMS320F28032RSHT?

The TMS320F28032RSHT integrates one eCAN module, one LIN module, two SPI modules, one I2C module, and one SCI (UART-compatible) module. These interfaces support direct connection to battery management systems (eCAN), automotive body controllers (LIN), isolated gate drivers (SPI), temperature sensors (I2C), and host diagnostics (SCI) - eliminating external protocol translators in TMS320F28032RSHT-based industrial power supplies.