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51.发明申请公开(公告)号：US20210351687A1
公开(公告)日：2021-11-11
申请号：US17246844
申请日：2021-05-03
发明人： Chiqing Fang , Zhiwei Xu , Kaiwei Yao , Chen Zhao
摘要： A method of inductor current reconstruction for a power converter can include: acquiring at least one of a current that represents a current flowing through a main power transistor, and a current that represents a current flowing through a rectifier transistor, in order to generate a switching current sampling signal in the power converter; and generating an inductor current reconstruction signal representing an inductor current in one complete switching cycle according to the switching current sampling signal and an inductor voltage signal representing a voltage across an inductor in the power converter.
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公开(公告)号：US20210336053A1
公开(公告)日：2021-10-28
申请号：US17366439
申请日：2021-07-02
发明人： Zhongping Liao
摘要： A semiconductor device structure can include: (i) a first semiconductor layer having dopants of a first type; (ii) a second semiconductor layer having the dopants of the first type on the first semiconductor layer, where the second semiconductor layer is lightly-doped relative to the first semiconductor layer; (iii) first and second column regions spaced from each other in the second semiconductor layer, where the second column region is arranged between two of the first column regions; and (iv) first and second first sub-column regions laterally arranged in the second column region, where a doping concentration of the first sub-column region decreases in a direction from the first column region to the second sub-column region, and where a doping concentration of the second sub-column region decreases in a direction from the first column region to the first sub-column region.
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53.发明授权公开(公告)号：US11133742B2
公开(公告)日：2021-09-28
申请号：US16916405
申请日：2020-06-30
发明人： Wang Zhang , Chen Zhao
摘要： A current control circuit can include: a current detection circuit configured to obtain a current detection signal for characterizing an output current of a switched capacitor converter, where the switched capacitor converter includes a plurality of first switch groups coupled between an input terminal and a ground, and where each first switch group comprises two switches coupled in series; and a voltage regulation circuit configured to regulate the output current by adjusting an equivalent impedance of the switched capacitor converter in accordance with the current detection signal.
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54.发明授权公开(公告)号：US11133413B2
公开(公告)日：2021-09-28
申请号：US16010002
申请日：2018-06-15
发明人： Chenggong Han
IPC分类号： H01L29/78 , H01L29/66 , H01L29/08 , H01L29/423 , H01L29/06
摘要： In one embodiment, method of making a high voltage PMOS (HVPMOS) transistor, can include: (i) providing a P-type substrate; (ii) implanting N-type dopants in the P-type substrate; (iii) dispersing the implanted N-type dopants in the P-type substrate to form a deep N-type well; (iv) implanting P-type dopants of different doping concentrations in the deep N-type well along a horizontal direction of the deep N-type well; and (v) dispersing the implanted P-type dopants to form a composite drift region having an increasing doping concentration and an increasing junction depth along the horizontal direction of the deep N-type well.
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公开(公告)号：US20210282243A1
公开(公告)日：2021-09-09
申请号：US17327887
申请日：2021-05-24
发明人： Huiqiang Chen , Zhishuo Wang , Jianxin Wang
摘要： A power converter can include: a rectifier circuit; a silicon controlled dimmer coupled between an AC input terminal and an input terminal of the rectifier circuit; and a bleeder circuit coupled to an output terminal of the rectifier circuit, and being configured to provide a bleeder current after the silicon controlled dimmer is turned off. A method of controlling a power converter, can include: generating a bleeder current flowing though output terminals of a rectifier circuit of the power converter after a silicon controlled dimmer is turned off; and where the silicon controlled dimmer coupled to the rectifier circuit receives an AC input voltage.
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公开(公告)号：US11114931B2
公开(公告)日：2021-09-07
申请号：US16594287
申请日：2019-10-07
发明人： Qiukai Huang , Jian Deng
摘要： An AC-DC power converter can include: a front-stage power circuit; a rear-stage power circuit configured to share one power switch as a main power switch with the front-stage power circuit, where the rear-stage power circuit is coupled to a load, and a first magnetic component of the front-stage power circuit and a second magnetic component of the rear-stage power circuit are not coupled in one conductive loop from a positive terminal of a DC input voltage to a negative terminal of the DC input voltage; and an energy storage capacitor coupled to the front-stage power circuit and the rear-stage power circuit, where a common node of the first and second magnetic components is directly coupled to the power switch.
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公开(公告)号：US20210226545A1
公开(公告)日：2021-07-22
申请号：US17148779
申请日：2021-01-14
IPC分类号： H02M3/335 , G01R19/165 , H05B45/382 , H03K5/24
摘要： A power converter can include an input circuit having a primary winding and a primary power switch coupled in series between an input terminal and the ground; a first output circuit having a first secondary winding which is coupled with the primary winding; a second output circuit having a second secondary winding coupled with the primary winding and at least one secondary power switch; a first control circuit that controls the primary power switch to be turned on and off to adjust an output signal of the first output circuit; and a second control circuit which controls the secondary power switch to be turned on and off to adjust an output signal of the second output circuit. The secondary power switch can be turned on before the primary power switch is turned off in a first state in one switching cycle, in order to reduce the switching interference.
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58.发明申请公开(公告)号：US20210193815A1
公开(公告)日：2021-06-24
申请号：US17193234
申请日：2021-03-05
发明人： Budong You , Hui Yu , Meng Wang , Yicheng Du , Chuan Peng , Xunyi Song
IPC分类号： H01L29/49 , H01L21/265 , H01L21/762 , H01L29/06 , H01L29/08 , H01L29/10 , H01L29/40 , H01L29/423 , H01L29/66 , H01L29/78
摘要： A laterally diffused metal oxide semiconductor device can include: a well region having a second doping type; a reduced surface field effect layer of a first doping type formed by an implantation process in a predetermined region of the well region, where a length of the reduced surface field effect layer is less than a length of the well region; a body region of the first doping type extending from a top surface of the well region into the well region; a drain portion of the second doping type extending from the top surface of the well region into the well region; and an insulating structure located between the body region and the drain portion, at least a portion of the insulating structure is located on the top surface of the well region.
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公开(公告)号：US11022992B2
公开(公告)日：2021-06-01
申请号：US16720259
申请日：2019-12-19
发明人： Wang Zhang , Chen Zhao , Lang Mao
摘要： A voltage regulator can include: an input port with two terminals, and being configured to receive an input voltage; an output port with two terminals, and being configured to generate an output voltage, where the input port and the output port have a common ground potential; a group of input switches coupled in series between the two terminals of the input port, where a common node of every two adjacent input switches that form an input half-bridge topology is taken as an input switch node; at least one output half-bridge topology coupled between two terminals of the output port, where a common node of a high-side output switch and a low-side output switch in each output half-bridge topology is taken as an output switch node; and N storage capacitors, where each of the storage capacitors is coupled between one input switch node and one output switch node.
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公开(公告)号：US20210143743A1
公开(公告)日：2021-05-13
申请号：US17083513
申请日：2020-10-29
摘要： A control circuit for a switching converter having a main power switch and a freewheeling circuit, can be configured to: control the freewheeling circuit to be turned on in a first time interval after the main power switch is turned off; control the freewheeling circuit to be turned on in a second time interval after the first time interval, in order to reduce turn-on loss of the main power switch; and where the first time interval and the second time interval do not overlap each other in a switching cycle.
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