Texas Instruments TMS320F28034PNS

Overview

TMS320F28034PNS from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated Control Law Accelerator (CLA), 32 KB flash, 10 KB SARAM, 12-bit ADC (4.6 MSPS), 14 ePWM channels, and 45 GPIO pins - deployed in motor control, solar inverters, and EV charging power modules.

For engineers reviewing the TMS320F28034PNS datasheet, TMS320F28034PNS pinout, TMS320F28034PNS application, or TMS320F28034PNS equivalent, key selection criteria include CLA support for independent floating-point control loop execution, HRPWM capability for dual-edge modulation, analog comparator routing to PWM outputs, and LQFP-80 package compatibility with industrial thermal and layout constraints.

Technical Context

The TMS320F28034PNS implements a Harvard-architecture C28x CPU with atomic operations and fast interrupt response, coupled with a dedicated 32-bit floating-point CLA that executes control law code independently of the main CPU. Its memory subsystem includes 32 KB of secure flash, 10 KB of zero-wait-state SARAM, and 8 KB boot ROM.

Peripheral integration centers on real-time control: 14 ePWM channels (7 with high-resolution extension), 16-channel 12-bit ADC with 216.67 ns conversion time and dual sample-and-hold, three 32-bit CPU timers, eCAP, eQEP, HRCAP, and analog comparators with internal 10-bit references routed directly to PWM trip zones.

Key Specifications

Pinout & Package

Package: PN (LQFP-80), 12.0 mm × 12.0 mm body size, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28035PN, TMS320F28034PNS trades flash capacity for identical CLA-enabled performance and lower unit cost; compared with TMS320F28033PN, it adds deterministic floating-point loop acceleration at no pinout or thermal penalty.

Availability

TMS320F28034PNS is available at Aetrix Electronics and suitable for motor drives, solar inverters, and EV charging power modules requiring stable component supply across extended production lifecycles.

Supply support for TMS320F28034PNS 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 specializing in analog, embedded processing, and connectivity technologies with broad industrial and automotive design-in support.

The TMS320F2803x family delivers entry-performance real-time control MCUs optimized for cost-sensitive motor control, digital power, and energy conversion - emphasizing analog integration, CLA acceleration, and single-rail operation.

FAQ

What is the maximum operating frequency and instruction cycle time of the TMS320F28034PNS?

The TMS320F28034PNS operates at a maximum CPU frequency of 60 MHz, delivering a 16.67 ns instruction cycle time. This timing is guaranteed across the full –40°C to 105°C temperature range and 3.3 V ±5% supply, enabling deterministic real-time loop execution for motor and power control applications.

Does the TMS320F28034PNS include a Control Law Accelerator (CLA), and what functions does it support?

Yes, the TMS320F28034PNS includes a dedicated 32-bit floating-point CLA that executes control law code independently of the C28x CPU. It supports PID, field-oriented control (FOC), space-vector modulation (SVM), and sensorless observer algorithms - reducing CPU load and improving loop determinism without requiring external coprocessors.

What ADC specifications does the TMS320F28034PNS provide, and how is it configured for ratio-metric measurement?

The TMS320F28034PNS integrates a 12-bit ADC with 4.6 MSPS sampling rate, 216.67 ns conversion time, and 16 input channels. It supports ratio-metric operation using VREFHI and VREFLO pins - allowing direct connection to external sensor bridges or shunt amplifiers where reference voltage tracks supply rail variations.

How many ePWM channels does the TMS320F28034PNS support, and which ones offer high-resolution capability?

The TMS320F28034PNS supports 14 ePWM channels (7 A/B pairs). Seven of these - EPWM1 through EPWM7 - include High-Resolution PWM (HRPWM) extension, enabling sub-nanosecond duty-cycle adjustment and dual-edge modulation critical for SiC/GaN-based soft-switching topologies.

What package type and thermal characteristics apply to the TMS320F28034PNS?

The TMS320F28034PNS is supplied in an 80-pin LQFP (PN) package with 12.0 mm × 12.0 mm body size and 0.5 mm pitch. It is rated for operation from –40°C to 105°C (T-grade), with thermal resistance θ_JA = 40.5°C/W and θ_JB = 12.5°C/W per TI SPRS584Q datasheet revision January 2024.