Texas Instruments F2800135RHBR

Overview

F2800135RHBR from Texas Instruments is a 120-MHz C28x real-time microcontroller optimized for power electronics control, featuring a 32-bit DSP CPU with FPU and TMU, 128KB flash, 36KB ECC/parity-protected RAM, dual 4-MSPS 12-bit ADCs, 14 ePWM channels (2 with 150-ps resolution), one CAN port, three UARTs, two I²C, one SPI, and integrated CMPSS subsystem - deployed in motor drives, UPS, and solar inverters.

For engineers reviewing the F2800135RHBR datasheet, F2800135RHBR pinout, F2800135RHBR application, or F2800135RHBR equivalent, key selection criteria include real-time signal chain latency, on-chip analog integration (ADC + CMPSS), high-resolution PWM capability, CAN interface support, and industrial temperature range (–40°C to 125°C) for embedded power conversion systems.

Technical Context

The F2800135RHBR implements TI's C28x 32-bit DSP core at 120 MHz with hardware acceleration via Floating Point Unit (FPU32) and Trigonometric Math Unit (TMU), enabling deterministic execution of complex control algorithms. Its dual 12-bit ADCs operate at 4 MSPS with four post-processing blocks per ADC, tightly coupled to ePWM and CMPSS modules for closed-loop timing precision.

System-level timing is managed by dual internal 10-MHz oscillators, crystal/external clock input, windowed watchdog, missing-clock detection, and Dual-Clock Comparator (DCC). The device supports zero-pin boot, JTAGLOCK, and dual-zone security, with 3.3-V I/O and internal 3.3-V-to-1.2-V voltage regulator - no external VREG required except on 64-pin VPM variant.

Key Specifications

Pinout & Package

Package: 32-pin Very Thin Quad Flatpack No Lead (VQFN), 5 mm × 5 mm body size, 0.5-mm pitch, exposed thermal pad - optimized for compact, thermally demanding power stage control applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F2800137, F2800135RHBR trades flash capacity for lower BOM cost while retaining identical real-time performance, analog subsystem, and industrial temperature rating; versus F280025C, it delivers higher ADC throughput, more comparators, and proven C2000 ecosystem compatibility without CLA dependency.

Availability

F2800135RHBR is available at Aetrix Electronics and suitable for motor drives, uninterruptible power supplies, solar microinverters, and industrial AC-DC converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp-up.

Supply support for F2800135RHBR 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 leadership in real-time control solutions.

The TMS320F280013x product line was designed specifically for ultra-low-latency power electronics control - integrating high-speed ADCs, precision PWM, analog comparators, and deterministic DSP execution to replace discrete analog controllers in inverters, rectifiers, and motor drives.

FAQ

What is the maximum ADC sampling rate supported by the F2800135RHBR?

The F2800135RHBR supports up to 4 million samples per second (4 MSPS) per ADC, with a minimum conversion time of 250 ns. This enables high-fidelity current and voltage sensing in 100-kHz switching power converters, and the dual ADC architecture allows simultaneous sampling across up to 21 external channels - critical for multi-phase motor control and three-phase rectifier monitoring in the F2800135RHBR.

Does the F2800135RHBR include an integrated voltage regulator?

Yes, the F2800135RHBR integrates an internal 3.3-V-to-1.2-V voltage regulator (VREG) for core power, eliminating the need for an external DC-DC converter in most designs. This VREG is present across all package variants including the 32-pin RHB, unlike the optional VREGENZ feature found only on the 64-pin VPM variant - simplifying power design for compact F2800135RHBR implementations.

How many high-resolution PWM channels does the F2800135RHBR provide?

The F2800135RHBR provides two ePWM channels with high-resolution capability (150-ps step resolution), specifically ePWM1A and ePWM1B. These channels support ultra-fine dead-time control and phase-shift modulation essential for GaN/SiC-based power stages. All 14 ePWM channels are accessible in the 32-pin RHB package, though pin multiplexing limits concurrent peripheral use - confirmed in the F2800135RHBR pinout documentation.

Is CAN interface support available on the F2800135RHBR?

Yes, the F2800135RHBR includes one Controller Area Network (CAN) port compliant with ISO 11898-1, supporting bit rates up to 1 Mbps. The CAN peripheral is fully integrated and requires only an external CAN transceiver (e.g., SN65HVD230) for physical layer connection - this interface is used in F2800135RHBR-based systems for status reporting, firmware updates, and inter-module coordination in UPS and solar inverter stacks.

What security features are implemented in the F2800135RHBR?

The F2800135RHBR implements JTAGLOCK to disable debug access, zero-pin boot for secure startup without external configuration pins, and dual-zone security via TI's Device Configuration and Security Module (DCSM) - allowing independent code and data protection across flash banks. These features are active across all package variants including the RHB, and are documented in the F2800135RHBR security chapter for industrial and automotive-grade deployment.