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Weltrend Announced Availability of a New Series of Highly Integrated BLDC Motor Controllers
2021-01-21
Hsinchu, Taiwan, Weltrend Semiconductor (TWSE: 2436) today announced the release of the WT51FU16/WT51FU24 and WT51FM16/WT51FM24 BLDC motor controllers. As a result of highly integrated design, these chips make it possible to reduce customers’ total BOM cost and the size of PCB as well. Also, with built-in dual N-structure gate driver, the WT51FM16/WT51FM24 can help the cooling fan to achieve better heat dissipation efficiency further and therefore fit perfectly for server cooling fan related applications.
The WT51FU16/WT51FU24 is an 8-bit CISC architecture BLDC motor controller.
It has16K x 8 embedded flash, 512 x 8 SRAM, 12V to 5V LDO power management, comparators for motor commutation sensor-less BEMF detection, smart fan communication interface, in-fan programming functions and so on built-in.
The WT51FU16/WT51FU24 can directly operate in 12V BLDC motor system without hall sensor. The WT51FU16 in a QFN16 package (4 mm x 4 mm) is suitable for single-phase BLDC motor application while the WT51FU24 in a QFN24 package (4 mm x 4 mm) is suitable for three-phase BLDC motor application.
The WT51FM16/WT51FM24 is an 8-bit CISC architecture SoC for BLDC motor controller. It has 16K x 8 embedded flash, 512 x 8 SRAM, 12V to 5V LDO power management, comparators for motor commutation sensor-less BEMF detection, dual N-structure 30V gate driver, smart fan communication interface, in-fan programming function and so on built-in.
The WT51FM16/WT51FM24 can operate in 12V BLDC motor system without hall sensor and gate driver. The WT51FM16 in a QFN16 package (4 mm x 4 mm) is suitable for single-phase BLDC motor application while the WT51FM24 in a QFN24 package (4 mm x 4 mm) is suitable for three-phase BLDC motor application.
With Weltrend’s proprietary flexible –architecture design, both WT51FU16/WT51FU24 and WT51FM16/ WT51FM24 can support the implementation of various motor driving algorithms and customized functions requested from customers.
 
About Weltrend Semiconductor Inc.
Founded in 1989 in the "Silicon Valley of Taiwan", the Science-Based Industrial Park (SBIP) in Hsinchu, Weltrend (TAIEX: 2436) is a leading fabless semiconductor company, also known as IC design house, specializing in the planning, design, testing, application development and distribution of mixed-signal/digital IC products across multiple applications. For more information, please visit www.weltrend.com.
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