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Texas Instruments TMS320F28068FPFPQ
- Part No.:
- TMS320F28068FPFPQ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-TQFP Exposed Pad
- Datasheet:
-
TMS320F28068FPFPQ.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 80HTQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TMS320F28068FPFPQ from Texas Instruments is a 90-MHz C28x-core real-time microcontroller with integrated FPU, CLA, and ePWM peripherals, designed for high-precision motor control and digital power conversion. It delivers 11.11-ns instruction cycle time, 12-bit 3.46-MSPS ADC with dual sample-and-hold, and 16-channel ePWM (8 HRPWM-capable), operating across –40°C to 125°C for automotive-grade inverter modules.
For engineers reviewing the TMS320F28068FPFPQ datasheet, TMS320F28068FPFPQ pinout, TMS320F28068FPFPQ application, or TMS320F28068FPFPQ equivalent, key selection criteria include AEC Q100 qualification, 80-pin HTQFP PowerPAD™ package, on-chip CLA acceleration for real-time current loop execution, and USB 2.0 device/host support in automotive power electronics designs.
Technical Context
The TMS320F28068FPFPQ implements a Harvard-architecture C28x CPU with native single-precision floating-point unit and independent 32-bit CLA core executing control law code concurrently. Its peripheral set includes eight ePWM modules with dual-edge HRPWM capability, three eCAP inputs, four HRCAP modules, and two eQEP interfaces-optimized for position/speed feedback in closed-loop servo and BLDC drives.
Memory architecture comprises 64KB of on-chip flash (16-bit word), 34KB of SARAM, 1KB OTP ROM, and 32KB boot ROM-all secured via 128-bit key and CSM. Analog subsystem integrates 12-bit ADC with ratio-metric VREFHI/VREFLO references, three comparators with internal 10-bit DACs, and on-die temperature sensor for thermal monitoring in power stage applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | C28x 32-bit fixed/floating-point, 90 MHz (11.11 ns cycle time) - enables sub-microsecond interrupt latency for fast current-loop control. |
| FPU & CLA | Native single-precision FPU + independent 32-bit CLA accelerator - offloads PID, Clarke/Park transforms from main CPU for deterministic real-time execution. |
| ePWM Channels | 16 total (8 HRPWM-capable) across 8 modules - supports dual-edge modulation and dead-time insertion for IGBT/SiC gate driving in 3-phase inverters. |
| ADC Performance | 12-bit, 3.46 MSPS, 16-channel dual S/H - captures voltage/current simultaneously with <289 ns conversion time for accurate field-oriented control sampling. |
| Package & Temp | 80-pin HTQFP PowerPAD™ (PFP), AEC Q100 qualified - rated –40°C to 125°C with thermally enhanced die pad for automotive under-hood mounting. |
| Security | 128-bit CSM key + OTP ROM - prevents firmware reverse-engineering and protects proprietary motor control algorithms in production units. |
| USB Interface | Full-speed USB 2.0 device/host mode - enables firmware updates and real-time debug without external UART-to-USB bridges in OBC and charging systems. |
Pinout & Package
80-pin HTQFP PowerPAD™ (PFP) package with exposed thermal pad soldered to PCB ground plane; requires thermal vias for effective heat dissipation in high-power motor drive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GPIO0–GPIO54 | Configurable I/O with filtering | 54 multiplexed pins supporting ePWM, eCAP, eQEP, SPI, SCI, I²C, CAN, USB, and analog input functions - enables compact board layout with minimal external logic. |
| VDDIO / VDD / VSS | Power supply terminals | Single 3.3-V supply domain with integrated POR/BOR - eliminates need for external sequencing circuitry in cost-sensitive automotive ECUs. |
| ADCINA0–ADCINA7, ADCINB0–ADCINB7 | Analog input channels | 16-channel 12-bit ADC inputs with dedicated VREFHI/VREFLO pins - supports differential sensing and ratio-metric measurements for isolated current/voltage feedback. |
| EPWM1A–EPWM8B | PWM output terminals | 16 high-resolution PWM outputs with independent dead-time control - directly drives gate drivers in 3-phase inverter topologies with <150-ps resolution. |
| USB0DP / USB0DM | USB differential pair | On-chip full-speed USB transceiver - enables Class B compliance and plug-and-play firmware updates in EV charging station controllers. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Control Law Accelerator (CLA) | Independent 32-bit floating-point coprocessor executing control loops at 90 MHz - reduces main CPU load by >40% in FOC implementations. |
| High-Resolution PWM (HRPWM) | 8 channels with 150-ps resolution and dual-edge control - enables precise timing for SiC MOSFET gate driving and soft-switching topologies. |
| Viterbi/Complex Math/CRC Unit (VCU) | Hardware-accelerated complex multiply, CRC, and Viterbi decoding - improves efficiency of communication protocols and sensor fusion algorithms. |
| Integrated Analog Comparators | Three comparators with internal 10-bit DAC references routed to ePWM trip zones - provides hardware-fast overcurrent protection (<100 ns response). |
| AEC Q100 Qualification | Automotive-grade qualification per Q100-004/011 - validated for use in traction inverters, on-board chargers, and DC-DC converters in ISO 26262 ASIL-B systems. |
Applications
| EV On-Board Charger (OBC) | Solar String Inverter |
|---|---|
Use Scenario: Bidirectional AC/DC conversion with digital PFC and LLC resonant stages in 6.6-kW OBC modules. IC Role / Device Role / Timing Role: Real-time controller managing interleaved PFC, phase-shifted LLC, and battery-side DC-DC regulation with synchronized 16-channel PWM outputs. Use Value: CLA-accelerated current loops achieve <500-ns jitter in 100-kHz switching cycles, meeting CISPR-25 Class 5 EMI requirements without analog compensation. |
Use Scenario: MPPT tracking and grid-synchronization in residential string inverters with transformerless topology. IC Role / Device Role / Timing Role: Primary controller executing dual-loop FOC for DC-link voltage regulation and grid-tie current injection using 12-bit ADC with simultaneous sampling. Use Value: Dual S/H ADC captures voltage and current at exact same instant, enabling <0.1% THD grid current waveform with 98.5% peak efficiency. |
| Industrial Servo Drive | Automotive HVAC Compressor |
Use Scenario: High-bandwidth position/velocity/torque control in EtherCAT-enabled servo amplifiers for CNC and robotics. IC Role / Device Role / Timing Role: Motion controller interfacing with eQEP and HRCAP for 200 kpps encoder feedback while generating 16-bit PWM for 20-kHz IGBT switching. Use Value: Hardware eQEP quadrature decoding and CLA-based trajectory generation reduce host CPU dependency, enabling 1-ms motion update cycles. |
Use Scenario: Variable-speed compressor control in electric vehicle HVAC systems with refrigerant pressure and cabin temperature feedback. IC Role / Device Role / Timing Role: Automotive-qualified MCU managing sensor fusion (temperature, pressure, current), inverter control, and CAN diagnostics in ASIL-B compliant module. Use Value: AEC Q100 qualification and on-chip temperature sensor enable direct die-mounting on power module, eliminating external thermal sensors and reducing BOM cost by $1.20/unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar real-time control applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMS320F28069PFPQ | 128KB flash, 50KB RAM, VCU enabled - adds CRC/complex math acceleration not present in TMS320F28068FPFPQ. | Required for applications needing hardware CRC for secure firmware updates or Viterbi decoding in wireless BMS links. | Select when larger code space and VCU-assisted communication stacks are needed; otherwise TMS320F28068FPFPQ offers optimal cost/performance for motor control. |
| TMS320F280049CPZPQ | Newer C2000 generation with CLB, 100-MHz CPU, 128KB flash, and enhanced analog (dual 16-bit ADC) - not pin-compatible. | Targeted for next-gen designs requiring configurable logic blocks for custom PWM edge shaping or multi-axis synchronization. | Choose for roadmap migration where CLB flexibility and higher ADC resolution justify redesign; TMS320F28068FPFPQ remains preferred for drop-in replacement in existing AEC-Q100 platforms. |
Compared with TMS320F28069PFPQ, the TMS320F28068FPFPQ trades VCU and 64KB flash for lower cost and identical AEC-Q100 qualification, while the TMS320F280049CPZPQ offers generational improvements but requires PCB redesign - making TMS320F28068FPFPQ the optimal balance of automotive compliance, real-time performance, and legacy design continuity.
Availability
TMS320F28068FPFPQ is available at Aetrix Electronics and suitable for EV on-board chargers, solar string inverters, and industrial servo drives requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for TMS320F28068FPFPQ 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 leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in power management and real-time control ICs.
The TMS320F2806x family targets high-performance real-time control in motor drives, digital power, and automotive electrification - delivering C28x CPU + FPU + CLA integration in low-pin-count packages for cost-sensitive, thermally constrained applications.
FAQ
What is the maximum operating frequency and instruction cycle time of the TMS320F28068FPFPQ?
The TMS320F28068FPFPQ operates at a maximum CPU frequency of 90 MHz, delivering an instruction cycle time of 11.11 ns. This timing enables sub-microsecond interrupt response critical for high-bandwidth current loops in motor control applications. The TMS320F28068FPFPQ maintains this performance across its full –40°C to 125°C automotive temperature range with guaranteed timing margins.
Does the TMS320F28068FPFPQ support USB functionality, and what modes are available?
Yes, the TMS320F28068FPFPQ includes a full-speed USB 2.0 interface supporting both device and host modes. It operates at 12 Mbps and is implemented with on-chip transceivers (USB0DP/USB0DM pins), eliminating the need for external PHY components. This capability is confirmed in the Device Comparison table and functional block diagram for the F28068M/F variants, which share identical USB implementation with the TMS320F28068FPFPQ.
What AEC-Q100 qualification level does the TMS320F28068FPFPQ meet, and what does it cover?
The TMS320F28068FPFPQ is AEC-Q100 qualified for automotive applications, specifically rated for Grade 0 (–40°C to +125°C ambient). This qualification covers stress testing per Q100-004 (ESD), Q100-011 (latch-up), and Q100-006 (thermal cycling), ensuring reliability in under-hood and powertrain environments. The 'Q' suffix in the part number explicitly denotes this automotive qualification.
How much on-chip flash memory does the TMS320F28068FPFPQ have, and is it segmented?
The TMS320F28068FPFPQ contains 64KB of on-chip flash memory organized into eight equal sectors, each 8KB in size. This segmentation allows independent erasure and programming of individual sectors, facilitating robust firmware update mechanisms with rollback capability. Flash security is enforced via the Code Security Module (CSM) using a 128-bit key stored in OTP ROM.
What are the key analog features of the TMS320F28068FPFPQ for motor control sensing?
The TMS320F28068FPFPQ integrates a 12-bit, 3.46-MSPS ADC with dual sample-and-hold, 16 input channels, and ratio-metric VREFHI/VREFLO references. It also includes three analog comparators with internal 10-bit DACs that can be directly routed to ePWM trip zones for hardware-fast overcurrent protection. These features enable precise, simultaneous voltage and current sampling required for field-oriented control in BLDC and PMSM drives.
TMS320F28068FPFPQ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-TQFP Exposed Pad
- Series:
- C2000™ C28x Piccolo™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- C28x
- Core Size:
- 32-Bit Single-Core
- Speed:
- 90MHz
- Connectivity:
- CANbus, I2C, McBSP, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 256KB (128K x 16)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 50K x 16
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 1.995V
- Data Converters:
- A/D 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
TMS320F28068FPFPQ FAQ
1.How can I place an order for TMS320F28068FPFPQ through Aetrix?
Please submit a Request for Quotation (RFQ) for TMS320F28068FPFPQ 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 TMS320F28068FPFPQ reliable?
The price and inventory of TMS320F28068FPFPQ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMS320F28068FPFPQ is usually 5 days.
3.What payment methods are accepted for TMS320F28068FPFPQ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMS320F28068FPFPQ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMS320F28068FPFPQ?
TMS320F28068FPFPQ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMS320F28068FPFPQ 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 TMS320F28068FPFPQ?
For technical support, including TMS320F28068FPFPQ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMS320F28068FPFPQ requirements.
6.How does Aetrix verify that TMS320F28068FPFPQ is sourced from the original manufacturer or authorized distributors?
All TMS320F28068FPFPQ 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 TMS320F28068FPFPQ meets industry standards.
7.What is the process for return or replacement of TMS320F28068FPFPQ?
All TMS320F28068FPFPQ units undergo pre-shipment inspection (PSI). If there is an issue with TMS320F28068FPFPQ, 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 TMS320F28068FPFPQ part is unused and in its original packaging.
Return procedure for TMS320F28068FPFPQ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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