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Texas Instruments TMS320F28055PNQ
- Part No.:
- TMS320F28055PNQ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
TMS320F28055PNQ.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,351
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Product details
Overview
TMS320F28055PNQ from Texas Instruments is a C2000™ real-time control microcontroller featuring a 60-MHz TMS320C28x CPU, a 32-bit floating-point programmable control law accelerator (CLA), 64 KB on-chip flash, 10 KB SARAM, and integrated analog peripherals including a 12-bit 3.75-MSPS ADC, seven comparators with three internal DACs, four PGAs, and ePWM/eCAP/eQEP modules - deployed in automotive-grade motor control systems such as AC-input BLDC drives and inverter modules.
For engineers reviewing the TMS320F28055PNQ datasheet, TMS320F28055PNQ pinout, TMS320F28055PNQ application, or TMS320F28055PNQ equivalent, key selection criteria include AEC Q100 qualification (–40°C to 125°C), dual-zone security for firmware protection, single 3.3-V supply operation, and CLA-accelerated closed-loop timing for sub-microsecond control loop execution in safety-critical power electronics.
Technical Context
The TMS320F28055PNQ implements a Harvard-architecture C28x CPU with atomic operations and fast interrupt response, coupled with an independent CLA that executes floating-point control algorithms concurrently with main CPU tasks - enabling deterministic real-time execution of high-frequency PWM modulation and current-loop calculations. Its analog front end integrates seven comparators with programmable gain amplifiers and dual-sample-and-hold circuitry, directly routing comparator outputs to ePWM trip zones for hardware-fast overcurrent protection.
Clock management includes two internal zero-pin oscillators, crystal oscillator support (X1/X2), and missing-clock detection; power architecture uses an integrated 1.8-V voltage regulator (VREGENZ-controlled) eliminating external LDO requirements while supporting single-rail 3.3-V system design with no sequencing constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | TMS320C28x at 60 MHz (16.67-ns cycle time); enables deterministic real-time control with unified memory model and C/C++ code efficiency. |
| CLA | 32-bit floating-point math accelerator executing independently of CPU; offloads PID, FOC, and observer computations from main core. |
| ADC | 12-bit, 3.75 MSPS with 16 channels, dual sample-and-hold, and ratio-metric VREFHI/VREFLO reference; supports simultaneous sampling for motor phase current reconstruction. |
| ePWM | 14-channel enhanced PWM with high-resolution dead-band, trip-zone inputs, and EPWMSYNCI/EPWMSYNCO for multi-device synchronization in multi-phase inverters. |
| Security | Dual-zone security module with 128-bit key lock; protects flash, SARAM, OTP, and secure ROM against unauthorized read/write access. |
| Temperature Range | –40°C to +125°C (AEC Q100 qualified); validated for under-hood automotive motor control and industrial drive environments. |
| Package | 80-pin LQFP (PN), 12.0 mm × 12.0 mm body; compatible with standard surface-mount assembly and thermal pad-less PCB layout. |
Pinout & Package
80-pin Low-Profile Quad Flatpack (LQFP, PN package), 12.0 mm × 12.0 mm body size, 0.5-mm pitch, exposed pad not present. Designed for automotive and industrial PCBs requiring robust thermal performance without thermal vias.
| 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 internal VREG enabled. |
| VDD (Pins 6, 54, 73) | CPU and digital logic supply | Supplies 1.8-V core via integrated VREG; decoupled with 1.2-µF capacitors per pin for low-noise operation. |
| VDDA (Pin 20) | Analog subsystem supply | Separate 3.3-V analog rail for ADC, comparators, and PGAs; requires local 2.2-µF decoupling to minimize noise coupling. |
| X1/X2 (Pins 52/51) | Crystal oscillator interface | Supports external quartz/resonator for precise clocking; XCLKINSEL bit selects between crystal and external clock source. |
| GPIO0–GPIO42 | Multiplexed I/O terminals | 42 pins configurable as GPIO or peripheral functions (ePWM, eCAP, eQEP, SCI, SPI, I²C, eCAN); all support input filtering and per-pin pullup control. |
| TRST/TCK/TMS/TDI/TDO (Pins 9, 38, 36, 35, 37) | JTAG test access port | IEEE 1149.1-compliant boundary scan; TRST requires external 2.2-kΩ pulldown for functional mode stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Analog Front End | Seven comparators with three internal 6-bit DACs, one buffered VREFOUT DAC, four PGAs (gain ≈ 3/6/11), and four digital filters - enables hardware-based overcurrent and overvoltage protection without CPU intervention. |
| Real-Time Control Acceleration | CLA executes floating-point control laws (e.g., FOC, SVM) in parallel with CPU; reduces total control loop latency below 1 µs for high-speed motor commutation. |
| AEC Q100 Qualified | Qualified per AEC Q100 Grade 1 (–40°C to +125°C); includes automotive-specific reliability testing, failure-in-time (FIT) data, and traceable wafer lot documentation. |
| Single-Rail Power Architecture | Internal 1.8-V VREG eliminates need for external DC/DC converter; VREGENZ pin allows seamless transition to external 1.8-V supply if required for system-level power optimization. |
| Secure Firmware Execution | Dual-zone security isolates boot ROM and secure memory; 128-bit key prevents reverse engineering and unauthorized firmware updates in production ECUs. |
Applications
| AC-Input BLDC Motor Drive | Inverter & Motor Control |
|---|---|
Use Scenario: High-efficiency variable-speed drive for HVAC compressors using sinusoidal commutation and sensorless rotor position estimation. IC Role / Device Role / Timing Role: Real-time controller executing field-oriented control (FOC) loops at 20 kHz, managing ADC sampling, ePWM generation, and fault handling via hardware trip zones. Use Value: Integrated CLA accelerates Clarke/Park transforms and PI regulators; seven comparators enable direct hardware-based overcurrent shutdown within 100 ns. | Use Scenario: Three-phase inverter module for industrial servo drives with active braking and regenerative energy recovery. IC Role / Device Role / Timing Role: Central motion controller coordinating 14 ePWM channels across three phases, synchronizing gate drivers via EPWMSYNCI/EPWMSYNCO signals. Use Value: Dual-sample-and-hold ADC captures simultaneous phase currents; eQEP interface reads encoder feedback at up to 10 MHz for high-resolution position tracking. |
| Door Operator Drive Control | Automotive HVAC Blower Module |
Use Scenario: Compact, cost-sensitive door actuator with soft-start, stall detection, and torque limiting for commercial building automation. IC Role / Device Role / Timing Role: Embedded motor controller implementing trapezoidal commutation and current-mode regulation using internal comparators and ePWM dead-band control. Use Value: On-chip temperature sensor compensates oscillator drift; PGA amplifies low-level current-sense signals before ADC conversion, improving resolution at light loads. | Use Scenario: Automotive cabin blower motor control unit requiring ASIL-B compliance, EMI resilience, and thermal robustness under hood conditions. IC Role / Device Role / Timing Role: AEC Q100-qualified MCU performing closed-loop speed control, diagnostics, and CAN communication with body control module. Use Value: eCAN bus handles ISO 11898-1 messaging; dual-zone security prevents unauthorized firmware reflash; VSSA/VDDA isolation minimizes ADC noise in noisy vehicle electrical environment. |
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 |
|---|---|---|---|
| TMS320F28054PNQ | No CLA; 64 KB flash but only 10 KB SARAM; same 60-MHz C28x core and analog peripherals. | Lacks hardware-accelerated floating-point control; suitable for simpler scalar control or lower-loop-rate applications. | Select when CLA is unnecessary and BOM cost reduction is prioritized over advanced FOC execution speed. |
| TMS320F28069MPZT | Floating-point unit (FPU) instead of CLA; 256 KB flash, 100-MHz CPU, 16-bit 4-MSPS ADC, and enhanced ePWM with HRPWM. | Higher performance and memory; targets complex multi-axis servo systems requiring extended math libraries and larger code footprint. | Choose for next-generation designs needing higher computational headroom, FPU-native code, and expanded peripheral count beyond F2805x capabilities. |
Compared with TMS320F28054PNQ, the TMS320F28055PNQ adds CLA acceleration for deterministic floating-point control loops; compared with TMS320F28069MPZT, it trades raw CPU speed and memory for lower cost, smaller footprint, and optimized analog integration in compact automotive and industrial drives.
Availability
TMS320F28055PNQ is available at Aetrix Electronics and suitable for automotive HVAC blower modules, AC-input BLDC motor drives, and industrial inverter control systems requiring stable component supply, AEC Q100 qualification, and long-term lifecycle support.
Supply support for TMS320F28055PNQ 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 connectivity technologies, with leadership in real-time control silicon for power electronics and industrial automation.
The TMS320F28055PNQ belongs to TI's C2000™ real-time control MCU product line, designed specifically for high-precision, low-latency closed-loop control in motor drives, solar inverters, and digital power systems - emphasizing analog integration, deterministic timing, and functional safety readiness.
FAQ
What is the operating temperature range and automotive qualification status of the TMS320F28055PNQ?
The TMS320F28055PNQ is rated for –40°C to +125°C and is AEC Q100 qualified (Grade 1), making it suitable for under-hood automotive applications such as HVAC blower control and electric power steering assist modules. This qualification includes stress testing for temperature cycling, humidity, and ESD per automotive standards, and TI provides full traceability documentation for production use in safety-critical systems.
Does the TMS320F28055PNQ include an integrated voltage regulator, and how is it configured?
Yes, the TMS320F28055PNQ includes an internal 1.8-V voltage regulator (VREG) controlled by the VREGENZ pin (Pin 71). When VREGENZ is tied low to VSS, the VREG is enabled and supplies core logic; when tied high to VDDIO, the VREG is disabled and an external 1.8-V supply must be provided. This flexibility allows system designers to optimize power architecture without adding discrete regulators.
How many ePWM channels does the TMS320F28055PNQ support, and what advanced features do they include?
The TMS320F28055PNQ supports 14 ePWM channels with hardware features including high-resolution dead-band generation, trip-zone inputs (CTRIPM1OUT, CTRIPPFCOUT), EPWMSYNCI/EPWMSYNCO for inter-device synchronization, and direct comparator-to-PWM routing for hardware-fast fault response. These capabilities enable precise gate driver control in three-phase inverters and multi-motor systems without CPU overhead.
What analog peripherals are integrated into the TMS320F28055PNQ, and how are they used in motor control?
The TMS320F28055PNQ integrates a 12-bit 3.75-MSPS ADC with 16 channels and dual sample-and-hold, seven analog comparators with three internal DACs, four programmable gain amplifiers (PGAs), and one buffered reference DAC (VREFOUT). In motor control, these are used for simultaneous current sensing, hardware-based overcurrent protection, analog signal conditioning prior to ADC conversion, and precision reference generation for closed-loop regulation.
Is the TMS320F28055PNQ pin-compatible with other devices in the F2805x family, and what are the key memory differences?
Yes, the TMS320F28055PNQ shares the same 80-pin LQFP (PN) package and pinout with all F2805x variants including TMS320F28054PNQ and TMS320F28052PNQ. Key memory differences: TMS320F28055PNQ has 64 KB flash and 10 KB SARAM, while TMS320F28054PNQ matches flash but omits the CLA, and TMS320F28052PNQ offers 32 KB flash and 8 KB SARAM - enabling scalable software reuse across performance tiers.
TMS320F28055PNQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- C2000™ C28x Piccolo™
- Packaging:
- Tray
- Product Status:
- Obsolete
- 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 ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMS320F28055PNQ FAQ
1.How can I place an order for TMS320F28055PNQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320F28055PNQ 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 TMS320F28055PNQ reliable?
The price and inventory of TMS320F28055PNQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320F28055PNQ is usually 5 days.
3.What payment methods are accepted for TMS320F28055PNQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320F28055PNQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320F28055PNQ?
TMS320F28055PNQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320F28055PNQ 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 TMS320F28055PNQ?
For technical support, including TMS320F28055PNQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320F28055PNQ requirements.
6.How does Aetrix verify that TMS320F28055PNQ is sourced from the original manufacturer or authorized distributors?
All TMS320F28055PNQ 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 TMS320F28055PNQ meets industry standards.
7.What is the process for return or replacement of TMS320F28055PNQ?
All TMS320F28055PNQ units undergo pre-shipment inspection (PSI). If there is an issue with TMS320F28055PNQ, 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 TMS320F28055PNQ part is unused and in its original packaging.
Return procedure for TMS320F28055PNQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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