Future Electronics – BLDC Motor Control Introduction

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by: Colin Weaving

Technology Director, Future Electronics (EMEA)

Interest in implementing Brushless DC (BLDC) motors is growing fast as OEMs respond to the worldwide effort to save energy and resources by adopting efficient, electronically commutated motor types.

BLDC motors are one of the most popular choices of new motor technology. Typically up to 10% more power-efficient than common AC motors, BLDC motors are also smaller and lighter, and offer long lifetimes because they have no brushes to wear out. Sophisticated commutation schemes also enable them to rotate at high speed: designers commonly achieve speeds of 20,000rpm using BLDC technology.

While BLDC motors can be implemented with a wide range of power ratings, they all share common elements:
• a control block using either a dedicated ASSP, a microcontroller or a DSP
• a power block using MOSFET or IGBT switching devices
• communication, which can be achieved in various ways, including dedicated fieldbuses and Ethernet

In addition, sensorless control is possible, but many designers will choose to use a position sensor, as well as isolation barriers where appropriate. Future Electronics’ suppliers have partnered with us to offer their best-in-class parts to fit these functional blocks, featured in this new Circuit Centre section. We hope you enjoy this new section of FTM, and that over time it becomes a useful library of good ideas for you to implement in your designs.

Recommended Parts :

POWER SUPPLY

  • Fairchild: FAN7930
  • Fairchild: FAN660
  • STMicroelectronics: L6699
  • STMicroelectronics: STSR2P

OPTOCOUPLER

  • Everlight: EL071
  • Everlight: ELS511/611
  • Fairchild: FOD8314
  • Fairchild: HCPL2731M

GATE DRIVER

MCU

TEMP SENSOR

HALL/MAGNETIC SENSOR

  • Crocus: CTSR500
  • Diodes: AH49
  • Diodes: AH182P

PHY

IPM

  • Fairchild: FSB50260SF
  • Littelfuse: MG06100S-BN4MM
  • ON Semiconductor: STK5C4U332J-E
  • STMicroelectronics: STGIB15CH60TS-L(E)
  • STMicroelectronics: STGIF10CH60TS-L(E)
  • Vishay: CPV362M4FPbF

POWER FETs

  • Fairchild: FCP220N80
  • STMicroelectronics: STB15N80KS
  • STMicroelectronics: STW21N150K5
  • STMicroelectronics: STW12N150K5

DISCRETE IGBTs

- DIODES

- CAN Transceiver

  • Microchip: MCP2551
  • NXP Semiconductors: TJA1057GTK
  • ON Semiconductor: NCV7341

- Development Tools

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More from these Suppliers :

Atmel – Driver
Atmel – MCU
Diodes Inc.
Intersil
Microchip
NXP Semiconductors
STMicroelectronics

 

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