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Texas Instruments TMS320F28027DASR
- Part No.:
- TMS320F28027DASR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
TMS320F28027DASR.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,980
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Product details
Overview
TMS320F28027DASR from Texas Instruments is a 32-bit C28x-core real-time microcontroller optimized for motor control and digital power applications, operating at 60 MHz (16.67-ns cycle time), featuring 32 KB on-chip Flash, 6 KB SARAM, 8-channel ePWM with 4 high-resolution outputs, 12-bit ADC (3 MSPS, 7 channels), and integrated comparators with DACs. It serves as the central control unit in compact inverter power stages and BLDC motor drives.
For engineers reviewing the TMS320F28027DASR datasheet, TMS320F28027DASR pinout, TMS320F28027DASR application, or TMS320F28027DASR equivalent, key selection criteria include its 38-pin TSSOP package, single 3.3-V supply operation, 60-MHz deterministic real-time performance, HRPWM dual-edge modulation capability, and code compatibility with broader C2000™ F28xx family.
Technical Context
The TMS320F28027DASR implements a Harvard-architecture C28x CPU with atomic instructions, fast interrupt response, and unified memory model-enabling deterministic execution critical for closed-loop motor control. Its peripheral set includes three 32-bit CPU timers, PIE-integrated interrupt handling, and dedicated ePWM modules with TZ (trip-zone) protection logic for fault-safe gate drive.
On-chip analog integration comprises a 12-bit ADC with 7 input channels, dual analog comparators with internal 10-bit references, and ratio-metric VREFHI/VREFLO support-allowing direct comparator-to-PWM routing for hardware-based overcurrent protection without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit fixed-point, 60 MHz (16.67 ns cycle time), little-endian |
| Memory | 32 KB Flash (secure), 6 KB SARAM (0-wait-state), 1 KB OTP, 8 KB Boot ROM |
| ePWM | 8-channel enhanced PWM with 4 independent HRPWM outputs for sub-nanosecond dead-time control |
| ADC | 12-bit, 3 MSPS sampling rate, 7-channel input (Group A only), dual sample-and-hold |
| Comparators | 2 analog comparators with integrated 10-bit DACs, routable to ePWM trip inputs |
| Package | 38-pin DA TSSOP (12.5 mm × 6.2 mm), industrial temperature range (–40°C to 105°C) |
| Power Supply | Single 3.3-V rail; integrated voltage regulator eliminates external LDO requirement |
Pinout & Package
38-pin Thin Shrink Small-Outline Package (TSSOP), body size 12.5 mm × 6.2 mm, lead pitch 0.65 mm, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDIO, VDDA | Power supply rails | VDD = core I/O (3.3 V); VDDIO = I/O buffer supply (3.3 V); VDDA = analog reference (3.3 V) |
| VSS, VSSA | Ground connections | VSS = digital ground; VSSA = analog ground - separate planes required for ADC accuracy |
| GPIO0/EPWM1A, GPIO1/EPWM1B | Primary PWM output pair | Complementary high-side/low-side gate drive signals with configurable dead-time insertion |
| GPIO2/EPWM2A, GPIO3/EPWM2B | Secondary PWM output pair | Independent timing control; supports interleaved or phase-shifted topologies |
| ADCINA0–ADCINA6 | Analog inputs (Group A) | 7-channel 0–3.3 V full-scale ADC input; used for current sensing, bus voltage, temperature feedback |
| COMP1A/COMP1B, COMP1OUT | Comparator 1 inputs and output | Hardware-level overcurrent detection; COMP1OUT directly triggers EPWM trip-zone (TZ1) |
| XRS, TRST, TCK, TMS, TDI, TDO | Reset and JTAG debug interface | Standard IEEE 1149.1 boundary-scan; TRST requires external 2.2-kΩ pulldown for functional mode |
| X1, X2 | Crystal oscillator terminals | Supports 1.8-V crystal/resonator (e.g., 10–20 MHz); X2 unconnected if external clock used via GPIO19/XCLKIN |
Key Features
| Feature | Design Value |
|---|---|
| HRPWM dual-edge control | Enables frequency-modulated PWM for resonant LLC or active clamp topologies with <150-ps resolution |
| Comparator-to-PWM routing | Direct hardware path from COMP1OUT/COMP2OUT to ePWM trip inputs eliminates software latency in fault response |
| Code-security module | 128-bit encryption key + lock mechanism protects Flash/SARAM/OTP against firmware extraction and reverse engineering |
| Single-rail 3.3-V operation | Integrated VREG eliminates need for external 1.8-V supply; reduces BOM count and layout complexity |
| Peripheral Interrupt Expansion (PIE) | Centralized vectoring of 96 peripheral interrupts to CPU with 12 priority levels - simplifies real-time ISR management |
Applications
| Air Conditioner Outdoor Unit | Inverter & Motor Control |
|---|---|
Use Scenario: Variable-speed compressor drive in residential HVAC systems with PFC front-end and inverter stage. IC Role / Device Role / Timing Role: Real-time field-oriented control (FOC) executor, ADC-sampled current loop, HRPWM-driven IGBT gate driver timing source. Use Value: Enables >95% system efficiency and <1% speed ripple using 60-MHz deterministic loop execution and sub-200-ns PWM edge placement. |
Use Scenario: Closed-loop torque/speed control of 3-phase BLDC motors in industrial automation and robotics. IC Role / Device Role / Timing Role: Central motor controller executing sensorless FOC, managing eCAP-based rotor position estimation and ePWM commutation timing. Use Value: Delivers 20-kHz current loop bandwidth using hardware-accelerated Clarke/Park transforms and zero-latency comparator fault shutdown. |
| Micro Inverter | AC-input BLDC Motor Drive |
Use Scenario: Single-phase grid-tied solar microinverter with MPPT and isolated DC-AC conversion. IC Role / Device Role / Timing Role: Dual-role controller: MPPT algorithm host + high-frequency AC output waveform generator via HRPWM and ADC-sampled grid synchronization. Use Value: Achieves IEEE 1547-compliant anti-islanding detection and <±0.05% THD using synchronized 32-bit timer-based grid phase tracking. |
Use Scenario: Fan or pump drive accepting universal AC input (90–264 VAC) with integrated rectification and inverter stage. IC Role / Device Role / Timing Role: System supervisor coordinating PFC boost control and inverter FOC, using shared ADC channels for line voltage, DC bus, and motor current. Use Value: Reduces component count by integrating PFC and motor control on one chip, enabled by 7-channel ADC and dual comparator hardware protection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar real-time motor control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320F28027PT | 48-pin LQFP package; adds ADC Group B (6 extra channels), COMP2, I2C, SCI UART | Required when dual ADC groups, serial communication, or additional GPIO are needed | Select TMS320F28027PT for designs needing >7 analog inputs or UART-based configuration/debugging |
| TMS320F28026DASR | Same 38-pin TSSOP package but 16 KB Flash, 5 KB SARAM, no HRPWM, 2 MSPS ADC (50 MHz CPU) | Suitable for cost-sensitive, lower-performance motor control where sub-ns PWM resolution is unnecessary | Choose TMS320F28026DASR when application loop bandwidth <10 kHz and Flash footprint <16 KB |
Compared with TMS320F28027DASR, the PT variant offers expanded analog and communication peripherals in larger footprint, while the F28026DASR trades HRPWM and memory for lower cost and power-making TMS320F28027DASR optimal for space-constrained, high-fidelity motor control requiring deterministic 60-MHz timing and hardware fault response.
Availability
TMS320F28027DASR is available at Aetrix Electronics and suitable for air conditioner outdoor units, micro inverters, and AC-input BLDC motor drives requiring stable component supply across industrial production cycles.
Supply support for TMS320F28027DASR 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 TMS320F28027DASR belongs to TI's C2000™ real-time MCU portfolio, designed specifically for deterministic closed-loop control in motor drives, digital power supplies, and renewable energy systems-emphasizing low-latency peripherals and robust analog integration.
FAQ
What is the maximum operating frequency of the TMS320F28027DASR?
The TMS320F28027DASR operates at a maximum CPU frequency of 60 MHz, corresponding to a 16.67-ns instruction cycle time. This speed is achieved using the on-chip PLL with either internal oscillators or an external crystal/resonator on X1/X2 pins. The device maintains full peripheral functionality-including ADC sampling and ePWM updates-at this clock rate, enabling tight real-time control loops in motor and power applications.
Does the TMS320F28027DASR support hardware-based fault protection?
Yes, the TMS320F28027DASR provides hardware-based fault protection through its trip-zone (TZ) logic and analog comparators. COMP1OUT and COMP2OUT can be routed directly to ePWM trip inputs (TZ1–TZ3), triggering immediate PWM shutdown within one system clock cycle-bypassing software latency. This enables sub-microsecond overcurrent response critical for IGBT/MOSFET safety in inverter stages.
What analog inputs are available on the TMS320F28027DASR in the 38-pin TSSOP package?
The TMS320F28027DASR in the 38-pin DA package provides 7 analog input channels (ADCINA0–ADCINA6) mapped to Group A only. It does not include ADC Group B inputs (ADCINBx), which are available only on the 48-pin PT variant. All 7 channels accept 0–3.3 V signals and support ratio-metric referencing via VREFHI/VREFLO pins for accurate current/voltage sensing in noisy power environments.
Is the TMS320F28027DASR pin-compatible with other F2802x devices?
No, the TMS320F28027DASR is not pin-compatible with other F2802x variants in different packages. While it shares the same 38-pin DA TSSOP footprint with TMS320F28026DASR and TMS320F28023DASR, pin functions differ across the family-for example, GPIO19 serves as XCLKIN in TMS320F28027DASR but as ECAP1 in TMS320F28026DASR. Always verify signal mapping per device-specific datasheet before PCB reuse.
What development tools support the TMS320F28027DASR?
The TMS320F28027DASR is supported by TI's C2000Ware software suite, Code Generation Tools (C2000 C/C++ Compiler), and CCS IDE. Hardware tools include the TMDX28027F28026 LaunchPad development kit and XDS110-class debug probes. TI also provides motor control SDKs with FOC libraries, InstaSPIN-FOC™ evaluation firmware, and reference designs like TIDA-00363 (BLDC inverter) that target the TMS320F28027DASR specifically.
TMS320F28027DASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- C2000™ C28x Piccolo™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- C28x
- Core Size:
- 32-Bit Single-Core
- Speed:
- 60MHz
- Connectivity:
- I2C, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 20
- Program Memory Size:
- 64KB (32K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K x 16
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 1.995V
- Data Converters:
- A/D 7x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMS320F28027DASR FAQ
1.How can I place an order for TMS320F28027DASR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320F28027DASR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TMS320F28027DASR reliable?
The price and inventory of TMS320F28027DASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320F28027DASR is usually 5 days.
3.What payment methods are accepted for TMS320F28027DASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320F28027DASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320F28027DASR?
TMS320F28027DASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320F28027DASR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TMS320F28027DASR?
For technical support, including TMS320F28027DASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320F28027DASR requirements.
6.How does Aetrix verify that TMS320F28027DASR is sourced from the original manufacturer or authorized distributors?
All TMS320F28027DASR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TMS320F28027DASR meets industry standards.
7.What is the process for return or replacement of TMS320F28027DASR?
All TMS320F28027DASR units undergo pre-shipment inspection (PSI). If there is an issue with TMS320F28027DASR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TMS320F28027DASR part is unused and in its original packaging.
Return procedure for TMS320F28027DASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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