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Fairchild simplifies BLDC motor controller reference design

Posted: 13 Jun 2013 ?? ?Print Version ?Bookmark and Share

Keywords:BLDC motor? controller reference design? PFC?

Fairchild Semiconductor's China-based Global Power Resource Centre (GPRC) has pushed out the door a reference design for brushless DC (BLDC) motor controller applications using SPM smart power modules and incorporates power factor correction (PFC) to enable designers to simplify design, cut BOM costs and develop rapid prototypes. According to the firm, the solution helps designers move towards BLDC electric motors and shift away from traditional AC designs.

Reference design RD-401 supports inclusion of the FCM8531 3-phase PMSM/BLDC controller, the FSB50550A smart power module, the FAN6961 boundary mode PFC controller and the FSL306LRN Green Mode Fairchild buck switch in design of PMSM motor drive solution up to 200W.

RD-401 optimises the PCB layout, the current sampling circuits and the current sampling algorithm when transitioning to BLDC designs. The use of the FCM8531 controller in this solution allows a variety of reference designs, together with an integrated development environmentthe Motor Control Development System (MCDS)that incorporates three drive modes. Using these tools, developers and design engineers can quickly implement a motor drive design and promptly assess the results.

Additionally, the reference design incorporates a PFC block, with the aim of improving power transmission efficiency. In addition the PFC module acts as the voltage pre-regulator. It is able to convert a broad input voltage range of 90-264VAC to 400VDC and below. This allows the power device and motor to have a small current rating, while outputting at a higher power.

Fairchild's power components and support for motor control design in home appliances and industrial applications address consumer and regulatory-led demand for more energy-efficient, better performing appliances and electronic devices.

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