Fairchild Semiconductor offers innovative BLDC motor control reference design
The reference design will enable designers to simplify design, reduce Bill of Material (BOM) costs and develop rapid prototypes.
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 200 W.
RD-401 addresses the challenges designers face when transitioning to BLDC designs by optimizing the PCB layout, the current sampling circuits, and the current sampling algorithm. The use of the FCM8531 controller in this solution allows a variety of reference designs, together with an integrated development environment – the Motor Control Development System (MCDS) – which 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 new reference design incorporates a Power Factor Correction (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 90-264 VAC to 400 VDC and below. This allows the power device and motor to have a small current rating, while outputting at a higher power.
"This new reference design is fully-functional and includes all of the circuitry required for running a motor," noted Jian Wang, China Regional Sales Director and Director of Motion Control, Asia Pacific, Fairchild Semiconductor. "Customers only need to connect three wires to the motor. Furthermore, the PFC can be disabled by simply disconnecting the jumper, allowing customers to easily assess whether PFC benefits performance. A debugging and development interface allows for further adjustment and optimization. This high price-performance, energy-saving design helps ensure an optimal time-to-market for our customers."
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.
More information about the RD-401 reference design at www.fairchildsemi.com/support/referencedesign/docs/RD-401.pdf
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