On October 21, 2014, Datongda Holdings, a leading electronic component distributor dedicated to the Asia-Pacific market, announced that its company has launched a DC brushless motor-driven microprocessor solution based on the NXP LPC1500 and Toshiba TMPM375.
The issue of energy conservation and emission reduction has been receiving increasing attention in countries around the world. The US EPRI pointed out that the amount of electricity consumed by motors worldwide is as high as $95 billion a year, accounting for 51% of all electricity. Whether it is industrial, domestic or commercial, the energy consumed by the motor is a high percentage. If the output and input power ratio of the motor system are improved, the power efficiency can be improved. The brushless DC motor has the advantages of high efficiency, energy saving, good control characteristics, high reliability, long life and low noise, and is replacing AC motors in more and more home appliances. Compared with the traditional AC motor, the efficiency of the DC motor is greatly improved, especially in the low-speed region, and the efficiency of the system is improved.
In response to the global trend of energy saving and emission reduction, the company has introduced NXP and Toshiba microprocessor DC brushless motor control solutions to provide a motor control solution that is faster, easier, more precise and more flexible.
Figure 1 - Comparison of DC motor and AC motor 
Figure 2 - Block diagram of the brushless motor drive scheme of the United Nations General Assembly Group
The company's solution for driving microprocessors with DC brushless motors is as follows:
Based on NXP LPC1500 DC Brushless Motor Drive Microprocessor Solution
Figure 3 - NXP LPC1500 DC Brushless Motor Drive Solution Block Diagram
Program characteristics
· Highly precise control of sensor and sensorless motor combinations for simultaneous control of two motors;
Two 12-bit, 12-channel, 2 MSPS ADCs with 500 ns ADC conversion time with on-chip quadrature encoder interface (QEI);
· Advanced analog subsystem and high precision timing, ideal for PID control loops;
· Four SCTImer/PWM modules providing up to 28 PWM channels with an average PWM resolution of less than 1 ns;
· Four fast comparators with 68 ns propagation delay for fast response overcurrent/overvoltage monitoring and protection;
· Interconnect SCTImer/PWM, ADC and comparator, ADC triggered by SCTImer/PWM;
· 72 MHz ARM Cortex-M3 processor;
· Connectivity: CAN modules enable industrial connectivity while USB simplifies field upgrades;
· Free FOC and BLDC motor control firmware;
· GUI-based calibration/adjustment tools;
Figure 4 - NXP LPC1500 DC Brushless Motor Drive Solution Photo
Based on Toshiba TMPM375 DC Brushless Motor Drive Microprocessor Solution
Figure 5 - Block diagram of Toshiba TMPM375 DC Brushless Motor Drive Solution
Program characteristics
· TMPM375FSDMG is the world's smallest vector control microcontroller;
· PMD (Motor Control Timer): 1 channel;
· Vector engine: 1 channel;
· Encoder input: 1 channel;
· Operational amplifier: 1 channel;
· Internal oscillator (I-OSC);
· Input / output port: 21 pins;
· 16-bit timer: 4 channels;
· SIO/UART: 2 channels;
· I2C/SIO: 1 channel;
· 12-bit AD converter: 4 channels (2μs conversion time (ADC conversion clock = @40MHz));
· Power-on reset circuit (POR);
· Voltage detection (VLTD);
· Oscillation frequency detector (OFD);
Figure 6 - Toshiba TMPM375 DC Brushless Motor Drive Solution Photo
About Dalian United Holdings:
Datongda Holdings is a leading electronic component distributor in the Asia Pacific region. Headquartered in Taipei (TSE:3702), it owns World Union Group, Pinjia Group, Quanding Group and Youshang Group with nearly 6,000 employees. There are more than 250 suppliers of agency products and more than 130 distribution bases around the world (about 80 in Asia Pacific). In 2013, the turnover reached US$13.7 billion.
Dalianda Holdings creates an industry holding platform, continuously optimizes the front-end marketing and logistics support team, acts as a professional partner in the industrial supply chain, provides Demand CreaTIon, turnkey solution, technical support, warehousing logistics and IC Value-added services such as e-commerce meet the needs of different customers such as original equipment manufacturers (OEMs), original design manufacturers (ODMs), electronic manufacturing service providers (EMS), and small and medium-sized enterprises. The international operation scale and localized sales pipeline have long been deeply involved in the Asia-Pacific market. It has been selected as the “Best IC Distributor in Asia†by professional media for years, and is the world's third largest electronic component distributor.
In order to improve the quality of localization services of the United Nations General Assembly and meet the differentiated needs of customers in the service areas of Greater China, the six major areas of Greater China (China) services include China Based Manufacturers and Taiwan-Based Manufacturers. , Foreign Manufacturing Service, Japan-Based Manufacturers, Korea-Based Manufacturers and Hong Kong-Based Manufacturers customers. In addition to providing customers with the best turnkey solution (Turnkey Solution), and in order to meet the customer's small-volume device procurement needs, the company has set up a dedicated Small Quantity Service (SQS). The United Nations has established the United Nations General University of Commerce and Trade in the Mainland and Hong Kong, the United Nations General Trading (Shenzhen) and the United Nations Electronic (Hong Kong), with the "Industry's Choice. Passage Benchmark" as the corporate vision and the full implementation of "Team, Integrity, The core values ​​of professionalism and efficiency are professional services to achieve mutual benefit and win-win for suppliers, customers and shareholders.
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