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    Output load adaptable MOSFET gate drive voltage level in a DC-DC controller
    19.
    发明授权
    Output load adaptable MOSFET gate drive voltage level in a DC-DC controller 有权
    DC-DC控制器中的输出负载适应性MOSFET栅极驱动电压电平

    公开(公告)号：US07372240B2

    公开(公告)日：2008-05-13

    申请号：US11616414

    申请日：2006-12-27

    申请人： Joseph Khayat ,  Aditya Makharia ,  Timothy Goodrow ,  David Olson

    发明人： Joseph Khayat ,  Aditya Makharia ,  Timothy Goodrow ,  David Olson

    IPC分类号： G05F1/575 ,  G05F1/618

    CPC分类号： H02M3/157 ,  H02M3/1588 ,  H02M2001/0012 ,  Y02B70/1466

    摘要： The output current of a fixed-frequency DC to DC converter is sensed, creating a voltage representative of the load current. This voltage is then compared to one or more threshold voltages using a plurality of comparators, creating a plurality of logic signals indicative of which of a plurality of ranges the output current falls within. These logic signals are coupled to a multiplexer which decodes the logical inputs to one-of-n and selects one gate drive voltage from a plurality of such voltages, each optimized for its corresponding current range. The selected gate drive voltage is then used as the gate drive in a known art DC to DC converter, thereby increasing efficiency over a wide range of output current.

    摘要翻译： 检测固定频率DC-DC转换器的输出电流，产生代表负载电流的电压。 然后使用多个比较器将该电压与一个或多个阈值电压进行比较，产生指示输出电流落入多个范围内的多个逻辑信号。 这些逻辑信号耦合到多路复用器，其将逻辑输入解码为n的一个，并且从多个这样的电压中选择一个栅极驱动电压，每个电压针对其对应的电流范围进行优化。 然后，所选择的栅极驱动电压用作已知技术的DC-DC转换器中的栅极驱动器，从而在宽范围的输出电流下提高效率。