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1. 发明公开

EP0184963A3 Synchronous power rectifier and applications thereof 失效
标题翻译：同步电源整流器及其应用
公开(公告)号：EP0184963A3
公开(公告)日：1987-08-19
申请号：EP85402424
申请日：1985-12-06
申请人： UNITRODE CORPORATION
发明人： Patel, Raoji
IPC分类号： H02M07/217 , H02M03/335
CPC分类号： H02M3/3353 , H02M3/33592 , Y02B70/1475
摘要： @ A synchronous power rectifier of high efficiency incorporates a bipolar power transistor (Q33) operable by a control circuit (80) in a switching mode to rectify the energy from a secondary winding (N32) of a power transformer (T31). The synchronous rectifier reduces or eliminates the need of rectifier diodes, which provides power rectification without the power loss associated with the rectifier diode voltage drops. Moreover, the rectifier switching time is adjustable to accommodate delayed turn-off times of bipolar power devices, as well as the switching signal duration to provide regulation of the output voltage (Vo) independent of the excitation of the primary of the transformer (T31).
摘要翻译：高效率的同步电力整流器包括在开关模式下由控制电路（80）操作的双极功率晶体管（33），以对来自电力变压器（T31）的次级绕组（N32）的能量进行整流。同步整流器减少或消除了整流二极管的需要，其提供功率整流，而没有与整流二极管电压降相关联的功率损耗。此外，整流器开关时间是可调节的，以适应双极功率器件的延迟关断时间，以及开关信号持续时间，以提供与变压器的初级（T31）的激励无关的输出电压（Vo）的调节，。

2. 发明公开

EP0025173A3 Integrated rectifier circuit 失效
标题翻译：集成整流器电路
公开(公告)号：EP0025173A3
公开(公告)日：1983-06-22
申请号：EP80105063
申请日：1980-08-26
申请人： Siemens Aktiengesellschaft
发明人： Manfred, Mauthe, Dipl.-Ing. , Pfleiderer, Hans-Jörg, Dr.
IPC分类号： H01L27/10 , H01L29/78 , H02M07/217
CPC分类号： H01L29/76808 , H01L27/1057

3. 发明公开

EP0112119A3 Bridge rectifier circuit 失效
标题翻译：桥式整流器电路
公开(公告)号：EP0112119A3
公开(公告)日：1985-05-15
申请号：EP83307427
申请日：1983-12-06
申请人： SILICONIX LIMITED
发明人： Jenkins, James Oliver Michael , Gardner, Nigel Carrington
IPC分类号： H02M07/217
CPC分类号： H02M7/219 , H02M2007/2195 , Y02B70/1408
摘要： A bridge rectifier circuit comprises a bridge of switching transistors 1 to 4 having their control terminals connected to switch the transistors to provide either full wave rectification of an a.c. input voltage or polarity correction of a d.c. input voltage of either polarity appearing at terminals A and B. The switching transistors are all of the same polarity type and at least two floating drivers 6 and 7 are connectd to generate and supply control potentials to the control terminals respectively of a pair of the switching transistors. In a preferred embodiment the switching transistors comprise field effect transistors. The floating drivers can comprise at least one respective bridge rectifier 12 capacitively linked to a source of vol ie pulses 10 when the input voltage has a predetermined poiarity, to generate the control potentials. Alternatively the floating drivers can comprise a voltage doubler or quadrupler capacitively linked to the source of voltage pulses. Such bridge rectifier circuits can be employed in a telephone instrument.

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