The 750-W motor drive helps run motors in appliances. It saves time, uses fewer parts, and works with two types of control boards.
The 750-W motor drive reference design from Texas Instruments (TI) is for controlling 3-phase Permanent Magnet Synchronous Motors (PMSMs) in appliances such as washing machines, dryers, air conditioners, and refrigerators. It uses a modular setup with a motherboard and two microcontroller daughterboards—one with the TMS320F2800137 and the other with the MSPM0G1507. This setup allows users to evaluate both MCU options using the same board. Users can choose the right controller for the system without needing hardware changes.
The design supports sensorless field-oriented control (FOC) using either the FAST software encoder or the enhanced Sliding Mode Observer (eSMO). It includes a GUI for motor identification and control tuning. This helps reduce development time and makes motor control setup simpler.
The TMS320F2800137 uses a 32-bit C28x core at 120 MHz. It supports fixed-point and floating-point code. The core includes a math unit and CRC instructions to speed up control tasks. The device includes 14 PWM channels, ADCs, and communication interfaces such as SPI, SCI, I2C, and CAN. This gives accurate signal processing and allows connection to other parts of the system.
The MSPM0G1507 uses a 32-bit Cortex-M0+ core running at up to 80 MHz. It includes 128 KB flash, 32 KB SRAM, and analog peripherals like ADCs, DACs, op amps, and comparators. It also includes DMA, a math unit, and interfaces like UART, SPI, and I2C. This supports efficient control tasks with lower power use.
Temperature sensing is done using the TMP6131 thermistor. It provides steady readings and works in various thermal conditions. It helps place sensing close to heat sources and provides useful data for control or safety.
The UCC28881 provides power supply control. It includes a 700-V MOSFET and startup current source. It operates from rectified mains and supports buck and flyback topologies. This helps reduce parts and improves power conversion.
The TPS54202 is a 2-A buck converter. It works from 4.5 V to 28 V and includes built-in FETs and compensation. Features include soft start, light load mode, and current limiting. This supports energy savings and load control.
The TLV9062 is a dual op amp used for signal amplification. It handles rail-to-rail signals, works with capacitive loads, and includes a low-power shutdown mode. This helps with clean signal processing and power control.
The TLV74033 is a linear regulator. It has low current use and responds fast to changes in input or load. It includes inrush control and current limiting to protect the power source.
The design helps users build motor control systems quickly. It supports motor drive needs in appliance systems with less time, cost, and effort. TI has tested this reference design. It comes with a bill of materials (BOM), schematics, assembly drawing, printed circuit board (PCB) layout, and more. The company’s website has additional data about the reference design. To read more about this reference design, click here.
