原标题：TIF2806x系列三相BLDC马达控制参考设计

　　TI公司的F2806x Piccolo系列MCU包括C28x内核和高度集成控制外设CLA,具有高效32位CPU,工作频率90MHz,16x16和32x32乘法累加器(MAC),哈佛总线架构,嵌入存储器包括多达256KB闪存,100KB RAM,2KB OTP ROM,6路DMA,3.3V工作,主要用在开关电源(SMPS),智能电网和动力线通信,太阳能逆变器和转换器,AC/DC转换器等.本文介绍了F2806x系列主要特性,框图和相关框图,三相无刷/PMSM低电流马达控制解决方案主要特性,电路图和材料清单.

　　The F2806x Piccolo family of microcontrollers (MCUs) provides the power of the C28x core and CLA coupled with highly integrated control peripherals in low pin-count devices. This family is code-compatible with previous C28x-based code, and also provides a high level of analog integration.

　　An internal voltage regulator allows for single-rail operation. Enhancements have been made to the High-Resolution Pulse Width Modulator (HRPWM) module to allow for dual-edge control (frequency modulation). Analog comparators with internal 10-bit references have been added and can be routed directly to control the ePWM outputs. The ADC converts from 0 to 3.3-V fixed full-scale range and supports ratio-metric VREFHI/VREFLO references. The ADC interface has been optimized for low overhead and latency.

　　F2806x系列主要特性:

　　High-Efficiency 32-Bit CPU (TMS320C28x)

　　90 MHz (11.11-ns Cycle Time)

　　16 x 16 and 32 x 32 Multiply and Accumulate (MAC) Operations

　　16 x 16 Dual MAC

　　Harvard Bus Architecture

　　Atomic Operations

　　Fast Interrupt Response and Processing

　　Unified Memory Programming Model

　　Code-Efficient (in C/C++ and Assembly)

　　Floating-Point Unit (FPU)

　　Native Single-Precision Floating-Point Operations

　　Programmable Control Law Accelerator (CLA)

　　32-Bit Floating-Point Math Accelerator

　　Executes Code Independently of the Main CPU

　　Viterbi, Complex Math, CRC Unit (VCU)

　　Extends C28x Instruction Set to Support Complex Multiply, Viterbi Operations, and Cyclic Redundency Check (CRC)

　　Embedded Memory

　　Up to 256KB of Flash

　　Up to 100KB of RAM

　　2KB of One-Time Programmable (OTP) ROM

　　6-Channel Direct Memory Access (DMA)

　　Low Device and System Cost

　　Single 3.3-V Supply

　　No Power Sequencing Requirement

　　Integrated Power-on Reset and Brown-out Reset

　　Low-Power Operating Modes

　　No Analog Support Pin

　　Endianness: Little Endian

　　JTAG Boundary Scan Support

　　IEEE Standard 1149.1-1990 Standard Test Access Port and Boundary Scan Architecture

　　Clocking

　　Two Internal Zero-Pin Oscillators

　　On-Chip Crystal Oscillator/External Clock Input

　　Watchdog Timer Module

　　Missing Clock Detection Circuitry

　　Peripheral Interrupt Expansion (PIE) Block That Supports All Peripheral Interrupts

　　Three 32-Bit CPU Timers

　　Advanced Control Peripherals

　　Up to 8 Enhanced Pulse-Width Modulator (ePWM) Modules

　　16 PWM Channels Total (8 HRPWM-Capable)

　　Independent 16-Bit Timer in Each Module

　　Three Input Enhanced Capture (eCAP) Modules

　　Up to 4 High-Resolution Capture (HRCAP) Modules

　　Up to 2 Enhanced Quadrature Encoder Pulse (eQEP) Modules

　　12-Bit Analog-to-Digital Converter (ADC), Dual Sample-and-Hold (S/H)

　　Up to 3.46 MSPS

　　Up to 16 Channels

　　On-Chip Temperature Sensor

　　128-Bit Security Key and Lock

　　Protects Secure Memory Blocks

　　Prevents Reverse-Engineering of Firmware

　　Serial Port Peripherals

　　Two Serial Communications Interface (SCI) [UART] Modules

　　Two Serial Peripheral Interface (SPI) Modules

　　One Inter-Integrated-Circuit (I2C) Bus

　　One Multichannel Buffered Serial Port (McBSP) Bus

　　One Enhanced Controller Area Network (eCAN)

　　Universal Serial Bus (USB) 2.0

　　(see Device Comparison Table for Availability)

　　Full-Speed Device Mode

　　Full-Speed or Low-Speed Host Mode

　　Up to 54 Individually Programmable, Multiplexed General-Purpose Input/Output (GPIO) Pins With Input Filtering

　　Advanced Emulation Features

　　Analysis and Breakpoint Functions

　　Real-Time Debug via Hardware

　　2806x Packages

　　80-Pin PFP and 100-Pin PZP PowerPAD Thermally Enhanced Thin Quad Flatpacks (HTQFPs)

　　80-Pin PN and 100-Pin PZ Low-Profile Quad Flatpacks (LQFPs)

　　F2806x系列应用:

　　• Switch Mode Power Supplies (SMPSs)

　　• Smart Grid and Power Line Communications

　　• Solar Micro Inverters and Converters

　　• AC/DC Inverters

　　• Power Factor Correction

　　图1.F2806x系列框图

　　图2.F2806x系列系统框图:外设部分

　　图1.F2806x系列框图:ePWM

　　三相无刷/PMSM低电流马达控制解决方案

　　Three-Phase Brushless/PMSM Low Current Motor Control Solution with InstaSPIN Software

　　This reference design demonstrates a motor control solution for spinning three-phase brushless DC (BLDC) and brushless AC (BLAC) - often referred to as permanent magnet synchronous (PMSM) - motors featuring the C2000™ Piccolo™ microcontroller and the DRV8312 3-phase motor driver. The reference design features a high-performance, power-efficient, cost-effective sensorless field-oriented control (FOC) and sensored/sensorless trapezoidal commutation platform that speeds development for quicker time to market. This reference design is based on the DRV8312 evaluation kit.

　　马达控制参考设计主要特性:

　　Full digital control of dual interleaved PFC power converter topology

　　Worldwide voltage input of 95 VAC to 265 VAC

　　400 VDC bus operating up to 700 W

　　C2000 Piccolo TMS320F28069M MCU digitally controls three-phase motors

　　Supports power metering of rectified input voltage, RMS input voltage, RMS input power, and input line frequency

　　Includes software, hardware design files, quick start graphical interface, and step-by-step documentation

　　图2.三相BLDC马达控制板DRV8312和TMS320F28069M MCU外形图

　　DRV8312评估板材料清单: