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Renesas Intros New Series POL Converters
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New high-efficiency point of load converters feature wafer-level chip size package for 75-percent reduction in size, very low thermal resistance and low power consumption.
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Friday, November 30, 2012:
Renesas has developed the RAA20770X Series of mini-POL converters for ASICs and other large-scale logic circuits. The new series converters are ideal for use in a wide variety of application fields, including personal computers, servers, industrial, office automation and networking equipment. Renesas claims that the RAA20770X series devices achieve the industry's highest level of miniaturisation and power density.
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The new series of devices from Renesas look to tackle the two changes in power supplies market, which are reduced power consumptions and to increase the diversity in supply voltages required by functional semiconductor products like MCUs and SoC devices. The new RAA20770X devices perform high-efficiency power conversion during normal load and also execute the frequent transitions to low-power mode quickly. This enables the reduction in overall system power consumption.
The RAA20770X devices also achieve a size reduction of about 75 percent compared to earlier Renesas products, featuring an ultra-miniature wafer-level chip size package. Furthermore, since no wired connections are required within the package, resistance in the wiring is reduced, which contributes to more efficient voltage conversion. Renesas explains that the RAA20770X Series represents the first devices with this level of integration in this small a package size.
In addition to combining the power supply controller and driver controller IC, the RAA20770X Series devices integrate two power MOSFETS on a single chip that are optimal for POL converters that step down an input voltage of 5 V or 12 V to the 1 V or 3.3 V used by large-scale ICs such as ASICs.
Srinivas Nallani Chakravathi, EFYTIMES News Network
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