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ISOLATED DC/DC CONVERTERS FOR WIDE OUTPUT VOLTAGE RANGE AND CONTROL METHODS THEREOF
ISOLATED DC/DC CONVERTERS FOR WIDE OUTPUT VOLTAGE RANGE AND CONTROL METHODS THEREOF
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机译:隔离的DC / DC转换器,用于宽输出电压范围及其控制方法
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摘要
An efficient control method for an isolated multilevel DC/DC resonant converter (700, 800, 1000, 1400, 1600. 1650, 1700, 1750) achieves a wide output voltage range with a narrow device switching frequency range, relative to the output voltage range and the device switching frequency range of the prior art. At any given time, a control circuit (801, 1401, 1601, 1651, 1701, 1751) selects one of two different modulation schemes to operate the primary-side switching devices of the resonant converter (700, 800, 1000, 1400, 1600. 1650, 1700, 1750) based on at least one of output voltage (Vo), output current, input signal, and one or more external control signals. Together with a selected device switching frequency, the two modulation schemes generate different voltage waveforms to a primary-side transformer, which are coupled to the secondary-side to provide different output voltages (Vo).
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机译:用于隔离的多级DC / DC谐振转换器(700,800,000,1400,1600.1600.1700,1750)的高效控制方法实现了具有窄器件开关频率范围的宽输出电压范围,相对于输出电压范围以及现有技术的设备切换频率范围。在任何给定时间,控制电路(801,1401,1601,1651,1701,1751)选择两个不同的调制方案中的一个,以操作谐振转换器的主侧切换装置(700,800,1000,1400,1600 。1650,1700,1750)基于输出电压( v O sub> sub> i>),输出电流,输入信号和一个或多个外部控制信号中的至少一个。与所选设备开关频率一起,两个调制方案产生不同的电压波形到初级侧变压器,耦合到次级侧以提供不同的输出电压( v o sub> < / i>)。
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