Murata Commercializes Ultra-Small Micro DC-DC Converters with Low EMI Noise
Murata Manufacturing Co., Ltd.
President/ Statutory Representative Director: Tsuneo Murata
Murata Manufacturing Co., Ltd., has successfully commercialized the â€œmicro DC-DC converters,â€ a series of ultra-small DC-DC converters with low EMI noise levels, which are targeted at mobile phones and other mobile devices.
The increasing sophistication contained in the functions of mobile devices has made it necessary for the power to be supplied separately with each individual function circuit. With a view to tackling the market demand to (1) reduce the component mounting area, (2) take steps to counter EMI noise and (3) conserve energy, Murata has applied its unique circuit design technology and multilayer process technology to develop and commercialize ultra-small micro DC-DC converters with low EMI noise levels. DC-DC converters serve to convert DC voltages into other DC voltages. Murata plans to continue contributing to the optimization of the power supply peripheral circuit design of mobile devices.
- The inductor, a ferrite substrate containing the EMI filter
function and a power IC have all been integrated to achieve a small
(The new converters have an on-board footprint that is 60% less compared to when a discrete converter is mounted.)
- The wiring connections have been reduced to the shortest possible lengths by integrating the power IC and inductor.
- An EMI reduction function has been incorporated to suppress
(Radiation noise: 30 dB reduction)
- A line-up of converters is available to flexibly accommodate output voltages in a range from 0.8V to 4.0V.
- High-efficiency step-down synchronous rectification type, with PWM/PFM automatic switching control.
Mobile phones, digital still cameras, portable media players and all types of other compact mobile devices
|Operating input voltage||Vin: 2.3Vï½ž5.5V|
|Output voltage||Vout: 0.8Vï½ž4.0V (Fixed)|
|Output current||Iout (Max) : 600mA|
|Switching frequency||fosc: 3.0MHz|
|Maximum applied voltage||Vin: 6.3V|
|Operating temperature range||Top: -40â„ƒï½ž85â„ƒ|
|Storage temperature range||Tstd: -40â„ƒï½ž85â„ƒ|
|L||2.5 ± 0.2mm|
|W||2.0 ± 0.2mm|
Production begins in October 2010
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