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1. 发明授权

US09595871B1 High efficiency inductive capacitive DC-DC converter 有权
标题翻译：高效感性电容式DC-DC转换器
公开(公告)号：US09595871B1
公开(公告)日：2017-03-14
申请号：US14976334
申请日：2015-12-21
申请人： Texas Instruments Deutschland GmbH
发明人： Erich Johann Bayer , Michael Lueders , Ruediger Rudolf Ganz
IPC分类号： G05F1/00 , H02M3/158 , H02M3/155 , G05F1/24
CPC分类号： H02M3/1582 , G05F1/24 , H02M3/1584 , H02M2001/0054 , H02M2003/1552 , Y02B70/1491
摘要： Disclosed examples include high-efficiency integrated circuits and inductive capacitive DC-DC converters with a first converter stage including first and second switches and an inductor, and a second converter stage including third and fourth switches and a flying capacitor. A dual mode control circuit regulates output voltage signal in a first mode when the output voltage signal is below a threshold by pulse width modulating the switches of the first converter stage. When the output voltage exceeds the threshold, the control circuit operates in a second mode with a first state to close the first and third switches, and a second state to close the fourth switch to connect the inductor in series with the flying capacitor. Dual mode operation of the first and second stages facilitates buck-boost operation with reduced inductor losses and converter switching losses, and the integrated circuit can be used in boost, buck or other configurations.
摘要翻译：公开的示例包括高效集成电路和具有包括第一和第二开关和电感器的第一转换器级的电感性电容DC-DC转换器，以及包括第三和第四开关和飞行电容器的第二转换器级。当通过对第一转换器级的开关进行脉冲宽度调制，当输出电压信号低于阈值时，双模式控制电路以第一模式调节输出电压信号。当输出电压超过阈值时，控制电路以第一状态操作以关闭第一和第三开关的第二模式，以及关闭第四开关的第二状态以将电感器与飞跨电容器串联连接。第一和第二级的双模操作有助于减小升压操作，降低电感器损耗和转换器开关损耗，并且集成电路可用于升压，降压或其他配置。

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