Texas Instruments TMS320F28022DAS

Overview

TMS320F28022DAS from Texas Instruments is a 32-bit C28x-core microcontroller optimized for real-time motor control and digital power applications, operating at 50 MHz (20-ns cycle time), featuring 16 KB on-chip Flash, 3 KB SARAM, 8-channel ePWM with 4 high-resolution outputs, 12-bit ADC (3 MSPS, 7 channels), and integrated comparators with DACs. It targets compact inverter power stages and BLDC motor drives.

For engineers reviewing the TMS320F28022DAS datasheet, TMS320F28022DAS pinout, TMS320F28022DAS application, or TMS320F28022DAS equivalent, key selection criteria include its 38-pin TSSOP package, single 3.3-V supply operation, 50-MHz deterministic C28x CPU, HRPWM dual-edge modulation capability, and analog integration including VREFHI/VREFLO ratio-metric ADC reference support.

Technical Context

The TMS320F28022DAS implements a Harvard-architecture C28x CPU with atomic instructions, fast interrupt response, and unified memory model-enabling efficient C/C++ execution in closed-loop control loops. Its peripheral set includes three 32-bit CPU timers, PIE-interrupt expansion, and dedicated ePWM modules with independent 16-bit timers per channel.

On-chip analog subsystem comprises a 12-bit ADC with 3-MSPS sampling rate, dual sample-and-hold, 7-channel Group A input, and two analog comparators with internal 10-bit references routed directly to PWM trip zones-supporting hardware-based overcurrent protection without CPU intervention.

Key Specifications

Pinout & Package

Package: 38-pin DA Thin Shrink Small-Outline Package (TSSOP), body size 12.5 mm × 6.2 mm, lead pitch 0.65 mm, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TMS320F28022DAS, TMS320F28023DA offers greater code storage for complex motion profiles, while TMS320F28026PT provides expanded analog I/O and package footprint flexibility-neither is pin-compatible, but both share identical C28x instruction set and peripheral register maps for seamless migration.

Availability

TMS320F28022DAS is available at Aetrix Electronics and suitable for AC-input BLDC motor drives, micro inverters, industrial AC-DC power supplies, and DC-input BLDC motor drives requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TMS320F28022DAS 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 since 1930.

The TMS320F28022DAS belongs to TI's C2000™ real-time microcontroller family, designed specifically for deterministic closed-loop control in motor drives, digital power, and renewable energy systems-emphasizing analog integration, PWM precision, and computational efficiency.

FAQ

What is the maximum operating frequency of the TMS320F28022DAS?

The TMS320F28022DAS operates at a maximum CPU frequency of 50 MHz, corresponding to a 20-ns instruction cycle time. This speed is factory-configured and fixed for this variant-unlike higher-tier F28027 devices, it does not support 60 MHz operation. All timing-critical peripherals including ePWM, ADC, and HRPWM are fully characterized and guaranteed at this frequency.

Does the TMS320F28022DAS support hardware-based overcurrent protection?

Yes, the TMS320F28022DAS supports hardware-based overcurrent protection via two dedicated analog comparators (COMP1 and COMP2) with internal 10-bit DAC references. COMP1OUT and COMP2OUT signals can be routed directly to ePWM trip-zone inputs (TZ1–TZ3), triggering immediate PWM shutdown within one system clock cycle-bypassing software latency entirely.

What are the key differences between TMS320F28022DAS and TMS320F28022PT?

The TMS320F28022DAS uses a 38-pin DA TSSOP package rated for –40°C to 125°C (S-grade), while TMS320F28022PT uses a 48-pin PT LQFP package with identical electrical specs but adds two ADC channels (13 total), one eCAP input, and four additional GPIO pins. The pinouts, package dimensions, and thermal characteristics differ-no mechanical or electrical compatibility exists between the two variants.

Can the TMS320F28022DAS operate from a single 3.3-V supply without external regulators?

Yes, the TMS320F28022DAS integrates an internal voltage regulator (VREG) that generates the required 1.8-V core supply from the 3.3-V VDD rail. When enabled (VREGENZ pulled low), it eliminates the need for an external LDO. No power sequencing is required, and all I/O, analog, and core domains are powered from the single 3.3-V source-simplifying power design for cost-sensitive applications.

Is the TMS320F28022DAS compatible with InstaSPIN-FOC™ motor control software?

No, the TMS320F28022DAS is not InstaSPIN-FOC™-enabled. That feature is exclusive to the F28026F and F28027F variants, which include dedicated ROM-based motor control libraries and hardware accelerators. The TMS320F28022DAS supports standard C2000 FOC implementations via C28x CPU and ePWM peripherals but lacks the preprogrammed InstaSPIN firmware and associated calibration routines.