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公开(公告)号：US20220255428A1
公开(公告)日：2022-08-11
申请号：US17588065
申请日：2022-01-28
Applicant: STMicroelectronics S.r.l.
Inventor： Salvatore TUMMINARO , Alfio PASQUA , Marco SAMMARTANO
Abstract: A circuit includes an electronic switch configured to be coupled intermediate a high-voltage node and low-voltage circuitry and configured to couple the low-voltage circuitry to the high-voltage node. A voltage-sensing node is configured to be coupled to the high-voltage node via a pull-up resistor. A further electronic switch can be switched to a conductive state to couple the voltage-sensing node and the control node of the electronic switch. A comparator compares a threshold with a voltage at the voltage-sensing node and causes the further electronic switch to switch on in response to the voltage at said voltage-sensing node reaching said threshold. A charge pump coupled to the current flow-path of the electronic switch is activated to the conductive state to pump electric charge from the current flow-path of the electronic switch to the control node of the electronic switch via the further electronic switch switched to the conductive state.
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2.发明申请CONTROL METHOD AND DEVICE FOR SWITCHING POWER SUPPLIES HAVING MORE THAN ONE CONTROL MODE 审中-公开用于切换具有多于一个控制模式的电源的控制方法和装置公开(公告)号：US20140133195A1
公开(公告)日：2014-05-15
申请号：US14157244
申请日：2014-01-16
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Giovanni LOMBARDO , Claudio ADRAGNA , Salvatore TUMMINARO
IPC: H02M3/335
CPC classification number: H02M3/33523 , H02M3/33507 , Y02B70/1433 , Y10T307/826
Abstract: A control device for controlling a switching power supply adapted to convert an input voltage into an output voltage according to a switching rate of a switching element. The control device includes first control means for switching the switching element in a first working mode at a constant frequency and second control means for switching the switching element in a second working mode at a variable frequency, under a maximum frequency, in response to the detection of a predefined operative condition of the switching power supply. The control device further includes means for selecting the first working mode or the second working mode.
Abstract translation: 一种用于控制开关电源的控制装置，其适于根据开关元件的开关速率将输入电压转换成输出电压。 控制装置包括用于以恒定频率切换第一工作模式的开关元件的第一控制装置和用于响应于检测以最大频率以可变频率在第二工作模式下切换开关元件的第二控制装置 的开关电源的预定操作条件。 控制装置还包括用于选择第一工作模式或第二工作模式的装置。
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公开(公告)号：US20230412080A1
公开(公告)日：2023-12-21
申请号：US18458940
申请日：2023-08-30
Applicant: STMICROELECTRONICS S.r.l.
Inventor： Salvatore TUMMINARO , Alfio PASQUA , Marco SAMMARTANO
Abstract: A circuit includes an electronic switch configured to be coupled intermediate a high-voltage node and low-voltage circuitry and configured to couple the low-voltage circuitry to the high-voltage node. A voltage-sensing node is configured to be coupled to the high-voltage node via a pull-up resistor. A further electronic switch can be switched to a conductive state to couple the voltage-sensing node and the control node of the electronic switch. A comparator compares a threshold with a voltage at the voltage-sensing node and causes the further electronic switch to switch on in response to the voltage at said voltage-sensing node reaching said threshold. A charge pump coupled to the current flow-path of the electronic switch is activated to the conductive state to pump electric charge from the current flow-path of the electronic switch to the control node of the electronic switch via the further electronic switch switched to the conductive state.
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