Murata’s New LCT Redefines Power Supply Noise Suppression, Reducing Component Count and Costs
May 13 2024 - 11:00PM
Business Wire
Murata Manufacturing Co., Ltd. (TOKYO: 6981) (ISIN:
JP3914400001) unveils a significant advancement in the realm of
electronic components with the launch of its innovative L Cancel
Transformer (LCT). This remarkable product is the first of its kind
and can neutralize the equivalent series inductance (ESL) of a
capacitor, optimizing its noise-reducing capabilities. Utilizing
Murata’s exclusive ceramic multilayer technology, this breakthrough
solution allows engineers to reduce system noise while decreasing
costs and component count.
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[Murata Manufacturing Co., Ltd.] L Cancel
Transformer(Photo: Business Wire)
As the demand for miniaturized and highly functional electronics
increases, the issue of electromagnetic noise is becoming
increasingly prominent for many industries. As a noise
countermeasure, capacitors are often utilized between the power
supply line and ground, but this method is not without its
challenges. The noise removal effectiveness of the capacitor is
optimal when a capacitor’s impedance is lowest. However, capacitor
impedance can rise due to its ESL, particularly at frequencies
beyond the self-resonant frequency, undermining the efficacy of the
noise cancellation. To minimize this impact, it is common practice
to connect numerous capacitors in parallel in order to collectively
reduce impedance, at the expense of Bill of Material (BoM)
component count and costs.
Murata’s LCT is a revolutionary new concept capable of resolving
the longstanding challenge of managing power supply noise and
capacitor component count. Murata’s LCT component is specifically
engineered to minimize noise within the frequency range of a few
MHz to 1GHz. It achieves this by utilizing negative mutual
inductance to reduce a noise-reducing capacitor’s ESL and therefore
increase the effectiveness of its operation, drastically reducing
the number of required capacitors.
By using non-magnetic ceramic multilayer technology in its
construction, the LCT ensures stable negative inductance and low DC
resistance (maximum 55mΩ) even in the presence of current
variations and is suitable for a wide range of applications,
including consumer, industrial and healthcare products. Murata’s
LCT breakthrough is a result of their extensive multilayer ceramic
knowledge and redefines power supply noise reduction circuit
design, and minimizes a significant and persistent electronic
design challenge.
Each LCT is suitable for temperatures up to temperatures 125oC
and since there is no DC superposition characteristic, it can be
used with stable negative inductance up to 3A. The surface mount
device (SMD) measures just 2.0 x 1.25 x 0.95 mm and is available in
tape and reel packing.
“Murata’s new LCT is a true innovation that does not merely
improve what is available, but redefines what is seen as a standard
noise suppression component by radically redefining the entire
concept”, said Masamichi Ando, Vice President Business Incubation
Center Corporate Technology & Business Development Unit, at
Murata. “With this revolutionary component, engineers will be able
to reduce component count, system complexity and costs, helping to
both further miniaturize their solutions and reduce its impact on
the environment by lowering material consumption.”
Murata’s LCT (Part number: LXLC21HN0N9C0L) is entering
production with samples available now. For more information please
visit here.
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version on businesswire.com: https://www.businesswire.com/news/home/20240513693449/en/
For more information, please contact: Murata Manufacturing Co.,
Ltd. Keisuke Tsuboi, prsec_mmc@murata.com Corporate Communications
Department