Power Electronics / Power Management


70 W brushless DC motor drivers

25 August 2021 Power Electronics / Power Management

Texas Instruments (TI) has introduced the industry’s first 70 W brushless DC (BLDC) motor drivers to provide code-free, sensorless trapezoidal and field-oriented control (FOC). The devices enable engineers to spin a BLDC motor in less than 10 minutes – eliminating significant design time for engineers designing a wide variety of industrial systems such as major and small home appliances and medical applications such as ventilators and continuous positive airway pressure (CPAP) machines.

With integrated real-time control and up to 18 discrete components – including power MOSFETs – the devices also speed system response time while reducing board space by as much as 70%, all while providing best-in-class acoustic performance, the company says.

The MCF8316A and MCT8316A BLDC motor drivers include a unique set of commutation control algorithms that eliminate the need to develop, maintain and qualify motor control software, which can eliminate months of design time. The algorithms, along with a high level of integration, enable these motor drivers to manage critical functions such as motor fault detection, while implementing protection mechanisms to increase system reliability. Because these motor drivers integrate sensorless technology to determine rotor position, they eliminate the need for external Hall sensors, which reduces system cost and increases reliability.

Additionally, the MCF8316A sensorless FOC motor driver intelligently extracts motor parameters, enabling designers to quickly tune a motor while delivering consistent system performance regardless of motor manufacturing variations. The MCT8316A sensorless trapezoidal control motor driver enables designers to tune a motor using only five hardware pins, simplifying systems by eliminating the need for a microcontroller interface.

The MCF8316A and MCT8316A provide advanced real-time control capabilities to help engineers achieve industry-leading acoustic performance in applications such as air purifiers, refrigerators, washing machines and fans. The MCF8316A includes a patented, precise automatic dead-time compensation technique that compensates for current distortion to enable engineers to optimise motor acoustic performance. The MCT8316A includes variable trapezoidal control techniques that designers can use to reduce motor noise.

The MCT8316A sensorless trapezoidal control motor driver can reach a maximum motor electric speed of 3,5 kHz, which TI claims is faster than any other code-free, sensorless motor driver. This speeds system response in applications such as robotic vacuums that require fast and precise motor control.

The MCT8316A and MCF8316A are also the industry’s first to provide a quick and controlled way to actively decelerate a motor, enabling engineers to stop a motor 50% faster than traditional motor control techniques. Furthermore, the devices can stop a motor without indiscriminately pumping energy back into the rail, which protects the system from damage.

The devices integrate three gate drivers and six high- and low-side MOSFETs with 50 mΩ of on-state resistance (RDS(on)) each, making them the first BLDC motor drivers to enable up to 70 W of power with 8 A of peak current for 12 and 24 V systems. The motor drivers also integrate components such as a low-dropout regulator, DC/DC step-down regulator and current-sense amplifiers, eliminating as many as 18 discrete integrated circuits.

For more information visit www.ti.com




Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Non-isolated step-down converters
25 August 2021, Accutronics , Power Electronics / Power Management
Capable of operating from an input voltage of 18 V to 32 V, the non-isolated step-down converters of TDK-Lambda’s i7A series deliver an output voltage that can be adjusted from 3,3 to 18 V with an output ...

Read more...
Automotive/industrial isolated buck converters
25 August 2021, Altron Arrow , Power Electronics / Power Management
Optimised for isolated buck regulator designs, the STMicroelectronics A6986I and L6986I DC/DC converter ICs have a wide input voltage range and low quiescent current to ensure robust and energy-efficient ...

Read more...
Rugged silicon carbide power devices
25 August 2021, EBV Electrolink , Power Electronics / Power Management
Today’s energy-efficient electric charging systems powering commercial vehicle propulsion, as well as auxiliary power systems, solar inverters, solid-state transformers and other transportation and industrial ...

Read more...
Amber taps Infineon for digital control of electricity
28 July 2021 , Power Electronics / Power Management
Infineon Technologies and Amber Solutions recently announced an alliance on a range of silicon opportunities anchored around Amber's digital control of electricity with embedded intelligence. The collaboration ...

Read more...
High-voltage DC-DC converter for electric vehicles
28 July 2021, Vepac Electronics , Power Electronics / Power Management
By understanding the needs of its performance-driven customers in the market of electrification of air, land and sea vehicles and systems, Crane Aerospace & Electronics engineers have designed and developed ...

Read more...
Single/dual-output DC/DC power module
25 August 2021, NuVision Electronics , Power Electronics / Power Management
The MPM3690-20 from Monolithic Power Systems (MPS) is a dual 13 A output or single 26 A output power module that offers a complete power solution, with excellent load and line regulation. It supports ...

Read more...
Fully differential amplifier
25 August 2021, TRX Electronics , Power Electronics / Power Management
Now stocked by Mouser Electronics, the THS4567 from Texas Instruments is a novel fully differential amplifier (FDA) that includes both independent input common-mode (VICM) and output common-mode (VOCM) ...

Read more...
Totem pole PFC controller
25 August 2021, EBV Electrolink , Power Electronics / Power Management
A new addition has been made to ON Semiconductor’s solution set for ultra-high density offline power supplies in the form of the NCP1680, a dedicated critical conduction mode totem pole PFC controller. ...

Read more...
1 A buck regulator with wide input range
25 August 2021, Conical Technologies , Power Electronics / Power Management
The SCM1301A step-down (buck) regulator is a new addition to Mornsun’s product lineup, with a very wide input range of 4,5 V to 40 V d.c. It is suitable for a wide range of applications from industrial ...

Read more...
Baseless power modules qualified for aerospace use
25 August 2021, EBV Electrolink , Power Electronics / Power Management
In the race to reduce aircraft emissions, developers are increasingly moving toward more efficient designs, including electrical systems that replace today’s pneumatics and hydraulics powering everything ...

Read more...