Development of Fast Response DC/DC Converter IC by Fujitsu
As consumer audio visual equipment are featuring multi-functional capability as well as their ability for advance video compression, forcing the IC manufacturer of such equipment to design ICs capable of handling high-speed with multi-functional features making the power supplies for these type of ICs to handle the large currents and fast transient response. In response to these needs, Fujitsu Microelectronics has developed a new two-channel DC/DC converter IC capable of fast transient response targeted to be used in digital consumer electronics. The newly developed DC/DC converter IC, the MB39A145 has been developed based on “bottom detection comparator method” including new enhanced circuits capable of providing changes in voltage in response to changes in current achieving a more stable and low ripple output voltage and subsequently reducing the number of external components that are needed otherwise, such as condensers. The new IC includes Pulse Frequency Modulation (PFM) that is highly efficient in low-current ranges which allows the equipment to have a low power consumption in stand-by mode. The company is planning to provide the sample of this new DC/DC converters sometimes by January of 2010 at price of 200 yen.
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