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Texas Instruments TMS320F28055PNT
- Part No.:
- TMS320F28055PNT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
TMS320F28055PNT.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,314
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Product details
Overview
TMS320F28055PNT from Texas Instruments is a 60-MHz C28x-core real-time microcontroller with integrated CLA accelerator, 14 ePWM channels, 12-bit 3.75-MSPS ADC, and dual-zone security-designed for closed-loop motor control in air conditioner outdoor units and BLDC drives.
For engineers reviewing the TMS320F28055PNT datasheet, TMS320F28055PNT pinout, TMS320F28055PNT application, or TMS320F28055PNT equivalent, key selection criteria include on-chip PGA count (4), CLA presence, 80-pin LQFP package, eCAN interface, and –40°C to 105°C industrial temperature rating.
Technical Context
The TMS320F28055PNT implements a Harvard-architecture C28x CPU with atomic instructions and unified memory mapping, paired with an independent 32-bit floating-point CLA for parallel real-time control loop execution. Its analog front end integrates seven comparators, three internal DACs, one buffered reference DAC, four PGAs, and four digital filters-all directly routable to ePWM trip zones.
Clocking relies on dual zero-pin oscillators or external crystal (X1/X2), with integrated POR/BOR and single 3.3-V supply operation enabled by on-chip VREG. The device supports IEEE 1149.1 JTAG boundary scan and features PIE-integrated peripheral interrupt handling across 42 GPIO pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit fixed-point core at 60 MHz (16.67-ns cycle time), enabling deterministic real-time control loops |
| CLA | Programmable Control Law Accelerator: independent 32-bit floating-point math engine for offloading PID/FOC calculations from main CPU |
| ADC | 12-bit, 3.75-MSPS sampling rate with 16-channel input, dual sample-and-hold, and ratio-metric reference support |
| ePWM Channels | 14 independent enhanced PWM outputs with dead-band, trip-zone, and synchronization capabilities for multi-phase inverter control |
| Analog Front End | 4 programmable gain amplifiers (gain ≈ 3/6/11), 7 comparators, 3 internal DACs, 1 buffered VREFOUT DAC, and 4 digital filters |
| Security | Dual-zone security module with 128-bit key, protecting Flash/SARAM/OTP/Secure ROM against unauthorized access and reverse engineering |
| Package & Temp | 80-pin LQFP (12.0 mm × 12.0 mm), rated for –40°C to 105°C (T-grade) industrial operation |
Pinout & Package
Package: 80-pin Low-Profile Quad Flatpack (LQFP), 12.0 mm × 12.0 mm body size, surface-mount, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO (Pins 38, 70) | Digital I/O power supply | Single 3.3-V rail powers GPIO, flash, and peripheral logic; no sequencing required when VREG enabled |
| VDD (Pins 6, 54, 73) | CPU and digital logic power | Supplies 1.8-V core via internal regulator; decoupled with 1.2-µF capacitors per pin |
| VDDA (Pin 20) | Analog power supply | Separate 3.3-V analog rail for ADC/PGA/comparator circuitry; requires local 2.2-µF decoupling |
| X1/X2 (Pins 52/51) | Crystal oscillator interface | Supports external quartz or ceramic resonator; X1 has internal 1.8-V drive, X2 is output-only |
| GPIO0–GPIO42 | Multiplexed general-purpose I/O | 42 pins configurable as inputs, outputs, or peripheral functions (ePWM, eCAP, eQEP, SCI, SPI, I²C, eCAN) |
| TRST (Pin 9) | JTAG test reset | Active-high debug reset with mandatory external 2.2-kΩ pulldown; must be held low during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Analog Front End | Four PGAs with discrete gain settings (≈3/6/11), seven comparators, and three internal DACs enable direct analog signal conditioning and PWM trip generation without external components |
| Real-Time Control Acceleration | CLA executes floating-point control algorithms (e.g., FOC, PID) concurrently with C28x CPU-reducing latency and freeing CPU bandwidth for communication and supervision tasks |
| Robust Clocking Architecture | Dual zero-pin oscillators eliminate need for external crystals in cost-sensitive designs; missing-clock detection and watchdog timer ensure system reliability |
| Secure Firmware Execution | Dual-zone security isolates boot ROM and secure memory regions; 128-bit key prevents firmware extraction and unauthorized reprogramming of protected Flash/SARAM |
| Motor Control Optimized Peripherals | 14 ePWM channels with high-resolution dead-band, synchronized start/stop, and trip-zone inputs directly tied to comparator outputs for fast overcurrent protection |
Applications
| Air Conditioner Outdoor Unit | Inverter & Motor Control |
|---|---|
Use Scenario: Variable-speed compressor and fan drive in residential/commercial HVAC systems requiring precise torque and speed regulation under wide load and temperature ranges. IC Role / Device Role / Timing Role: Real-time controller executing field-oriented control (FOC) and sensorless position estimation while managing thermal protection and communication with indoor unit. Use Value: Integrated PGAs and comparators condition current-sense signals directly; CLA accelerates FOC inner loop to ≤1 µs, enabling >20-kHz PWM switching with stable current regulation. | Use Scenario: Closed-loop speed/torque control of permanent magnet synchronous motors (PMSM) and brushless DC (BLDC) motors in industrial automation and robotics. IC Role / Device Role / Timing Role: Primary motion controller coordinating ePWM generation, ADC sampling, encoder feedback (eQEP), and CAN-based command interface. Use Value: 14 ePWM channels support 3-phase inverters with redundancy; 3.75-MSPS ADC captures current waveforms at 20 kHz with <267 ns conversion time for accurate vector control. |
| AC Drive Control Module | Door Operator Drive Control |
Use Scenario: Compact AC variable-frequency drive for pumps, fans, and conveyors operating from single-phase or three-phase AC mains with regenerative braking capability. IC Role / Device Role / Timing Role: System-on-chip controller managing rectifier stage, DC-link monitoring, inverter modulation, and safety interlocks via hardware trip zones. Use Value: Dual-zone security protects proprietary IP; eCAN interface enables interoperability with higher-level PLCs; on-chip temperature sensor compensates oscillator drift across –40°C to 105°C range. | Use Scenario: Intelligent door operator in commercial buildings requiring smooth acceleration/deceleration, obstacle detection, and emergency stop compliance. IC Role / Device Role / Timing Role: Safety-aware motor controller using comparator outputs and ePWM trip zones for sub-µs response to mechanical obstruction or current surge. Use Value: Seven comparators with internal DAC references provide configurable analog thresholds; buffered VREFOUT DAC supplies stable reference to external sensors or op-amps. |
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 |
|---|---|---|---|
| TMS320F28054PNT | No CLA accelerator; 64K Flash but same 14 ePWM, 3.75-MSPS ADC, and AFE peripherals | Suitable for simpler scalar V/f control where CLA-based FOC is not required | Select when cost sensitivity outweighs need for floating-point acceleration in inner control loops |
| TMS320F28052PNT | Reduced analog integration: 3 PGAs (vs. 4), 6 comparators (vs. 7), 2 internal DACs (vs. 3), 2-MSPS ADC (vs. 3.75 MSPS) | Targeted at lower-performance BLDC or stepper motor drives with relaxed current-sensing bandwidth | Choose for entry-level inverter designs where full AFE capability is unnecessary and BOM cost is critical |
Compared with TMS320F28054PNT and TMS320F28052PNT, the TMS320F28055PNT delivers highest analog integration and computational headroom-enabling complex sensorless FOC, faster ADC sampling, and secure firmware deployment in demanding industrial environments.
Availability
TMS320F28055PNT is available at Aetrix Electronics and suitable for air conditioner outdoor units, inverter & motor control systems, and AC drive control modules requiring stable component supply and long-term industrial lifecycle support.
Supply support for TMS320F28055PNT 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 for industrial, automotive, and consumer applications.
The TMS320F28055PNT belongs to TI's C2000™ real-time control MCU family-engineered specifically for high-precision, low-latency closed-loop control in motor drives, digital power, and sensing systems.
FAQ
What is the maximum operating frequency and instruction cycle time of the TMS320F28055PNT?
The TMS320F28055PNT operates at a maximum CPU frequency of 60 MHz, delivering a 16.67-ns instruction cycle time. This timing is guaranteed across the full industrial temperature range (–40°C to 105°C) and supports deterministic real-time execution of control algorithms with sub-microsecond latency.
Does the TMS320F28055PNT include a hardware floating-point unit (FPU)?
No, the TMS320F28055PNT does not contain a dedicated hardware FPU. Instead, it integrates a programmable Control Law Accelerator (CLA)-a separate 32-bit floating-point math engine that executes control code independently of the C28x CPU, enabling parallel real-time computation without FPU silicon area overhead.
How many ePWM channels does the TMS320F28055PNT support, and what trip-zone features are available?
The TMS320F28055PNT supports 14 enhanced PWM (ePWM) channels. Each channel includes independent trip-zone inputs linked directly to comparator outputs, allowing hardware-level fault response within one SYSCLK cycle. Trip sources include CTRIPM1OUT, CTRIPPFCOUT, and TZ1–TZ3 signals routed from analog comparators or external pins.
What analog peripherals are integrated into the TMS320F28055PNT for motor current sensing?
The TMS320F28055PNT integrates a comprehensive analog front end for current sensing: four programmable gain amplifiers (PGAs), seven comparators, three internal DACs for reference generation, one buffered VREFOUT DAC, and four digital filters. These allow direct amplification, comparison, and filtering of shunt or isolated current-sense signals before ADC conversion.
Is the TMS320F28055PNT pin-compatible with other devices in the F2805x family?
Yes, the TMS320F28055PNT shares identical 80-pin LQFP packaging and pinout with all F2805x variants (e.g., TMS320F28054PNT, TMS320F28052PNT). This allows hardware reuse across performance tiers-though software configuration must account for differences in CLA presence, Flash size, PGA count, and ADC speed between variants.
TMS320F28055PNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- C2000™ C28x Piccolo™
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- C28x
- Core Size:
- 32-Bit Single-Core
- Speed:
- 60MHz
- Connectivity:
- CANbus, I2C, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 42
- Program Memory Size:
- 128KB (64K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 10K x 16
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 1.995V
- Data Converters:
- A/D 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMS320F28055PNT FAQ
1.How can I place an order for TMS320F28055PNT through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320F28055PNT 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 TMS320F28055PNT reliable?
The price and inventory of TMS320F28055PNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320F28055PNT is usually 5 days.
3.What payment methods are accepted for TMS320F28055PNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320F28055PNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320F28055PNT?
TMS320F28055PNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320F28055PNT 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 TMS320F28055PNT?
For technical support, including TMS320F28055PNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320F28055PNT requirements.
6.How does Aetrix verify that TMS320F28055PNT is sourced from the original manufacturer or authorized distributors?
All TMS320F28055PNT 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 TMS320F28055PNT meets industry standards.
7.What is the process for return or replacement of TMS320F28055PNT?
All TMS320F28055PNT units undergo pre-shipment inspection (PSI). If there is an issue with TMS320F28055PNT, 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 TMS320F28055PNT part is unused and in its original packaging.
Return procedure for TMS320F28055PNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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