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1.发明申请CONTROL DEVICE FOR A QUASI-RESONANT SWITCHING CONVERTER, AND CORRESPONDING CONTROL METHOD 有权适用于开关转换器的控制装置及相应的控制方法公开(公告)号：US20160126846A1
公开(公告)日：2016-05-05
申请号：US14829398
申请日：2015-08-18
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Francesco Ferrazza , Davide Lena , Mirko Gravati , Domenico Tripodi , Massimiliano Leggenda
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/33523 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A control device for a switching converter having a transformer, with a primary winding receiving an input quantity, a secondary winding providing an output quantity, an auxiliary winding providing a feedback quantity, and a switch element. The control device has a processing module for generating a control signal for switching the switch element on the basis of the feedback quantity in order to regulate the output quantity via alternation of phases of storage and transfer of energy. The processing module controls the end of the transfer phase by comparing the feedback quantity with a comparison threshold. A discrimination circuit generates a signal for discrimination between the presence of a short circuit on the output or the fact that the input quantity is lower than a threshold. The processing module controls the end of the energy-transfer phase also on the basis of the discrimination signal.
Abstract translation: 一种用于具有变压器的开关转换器的控制装置，其中初级绕组接收输入量，提供输出量的次级绕组，提供反馈量的辅助绕组和开关元件。 控制装置具有处理模块，用于根据反馈量产生用于切换开关元件的控制信号，以通过存储和能量转移的相位的交替来调节输出量。 处理模块通过将反馈量与比较阈值进行比较来控制转移阶段的结束。 识别电路产生用于区分输出上的短路存在或输入量低于阈值的事实的信号。 处理模块也基于鉴别信号控制能量转移阶段的结束。
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2.发明授权公开(公告)号：US09948188B2
公开(公告)日：2018-04-17
申请号：US14829398
申请日：2015-08-18
Applicant: STMICROELECTRONICS S.R.L.
Inventor： Francesco Ferrazza , Davide Lena , Mirko Gravati , Domenico Tripodi , Massimiliano Leggenda
CPC classification number: H02M3/33507 , H02M3/33523 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
Abstract: A control device for a switching converter having a transformer, with a primary winding receiving an input quantity, a secondary winding providing an output quantity, an auxiliary winding providing a feedback quantity, and a switch element. The control device has a processing module for generating a control signal for switching the switch element on the basis of the feedback quantity in order to regulate the output quantity via alternation of phases of storage and transfer of energy. The processing module controls the end of the transfer phase by comparing the feedback quantity with a comparison threshold. A discrimination circuit generates a signal for discrimination between the presence of a short circuit on the output or the fact that the input quantity is lower than a threshold. The processing module controls the end of the energy-transfer phase also on the basis of the discrimination signal.
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