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公开(公告)号：US09768700B2
公开(公告)日：2017-09-19
申请号：US15182234
申请日：2016-06-14
Applicant: Apple Inc.
Inventor： InHwan Oh , Nicholas A. Sims
CPC classification number: H02M3/33507 , H02M1/08 , H02M1/14 , H02M1/4241 , H02M1/4258 , H02M1/44 , H02M7/217 , Y02B70/126 , Y02B70/1441
Abstract: The disclosed embodiments provide an AC/DC power converter that converts an AC input voltage into a DC output voltage. This AC/DC power converter includes an input rectifier stage which rectifies an AC input voltage into a first rectified voltage. The AC/DC power converter also includes a switching resonant stage which is directly coupled to the output of the input rectifier stage. The switching resonant stage converts the rectified voltage into a first high frequency AC voltage of a first amplitude. This AC/DC power converter additionally includes a transformer which is coupled to the output of the switching resonant stage and is configured to down-convert the first high frequency AC voltage into a second high frequency AC voltage of a second amplitude. Furthermore, the AC/DC power converter includes an output rectifier stage which is coupled to the output of the transformer, wherein the output rectifier stage rectifies the second high frequency AC voltage into a DC output voltage.
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公开(公告)号：US09651593B2
公开(公告)日：2017-05-16
申请号：US14268945
申请日：2014-05-02
Applicant: Apple Inc.
Inventor： Nicholas A. Sims , Jeffrey J. Terlizzi , Alexei Kosut , Timothy Johnson , Barry Corlett
CPC classification number: G01R27/02 , G01L1/205 , H02J7/042 , H02J2007/0062 , H02J2007/0096 , H02M7/02 , H02M7/53803 , H02M7/53846 , H02M7/539
Abstract: An alternating current (AC) to direct current (DC) power converter may have a connector with a pair of power supply contacts and a pair of data contacts. An electronic device may be connected to the connector of the power converter. The power converter may supply DC power to the electronic device using the power supply contacts. The power converter may include control circuitry that has a resistor coupled across the data contacts. When the electronic device and the power converter are connected to each other, each may advertise to the other that capabilities are present that exceed industry standards. At the same time, standard-compliant discovery operations may be performed to probe the value of the resistance of the resistor that is coupled across the data contacts. When extended capabilities are discovered, extended functions may be performed including accelerated charging functions and data communications functions.
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3.发明授权Power converter system with synchronous rectifier output stage and reduced no-load power consumption 有权功率转换器系统具有同步整流器输出级，空载功耗降低公开(公告)号：US09473032B2
公开(公告)日：2016-10-18
申请号：US14198507
申请日：2014-03-05
Applicant: Apple Inc.
Inventor： Nicholas A. Sims , Jeffrey J. Terlizzi
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M3/33592 , Y02B70/1475
Abstract: A power converter circuit may convert alternating current signals into direct current signals. A load may be powered from output terminals that are provided with the direct current signals. The power converter circuit may have a transformer with primary and secondary sides. A transistor on the primary side may be controlled using a pulse width modulation controller. A diode may be coupled in series with the secondary side of the transformer and the load. To improve efficiency at larger load currents, a synchronous rectifier control circuit may modulate a transistor on the secondary side that is coupled in parallel with the diode. The synchronous rectifier control circuit may monitor voltage pulses on the transistor on the secondary side or may make direct load current measurements to ascertain how much load current is flowing. Under low or no load conditions, synchronous rectification can be inhibited to improve efficiency.
Abstract translation: 电力转换器电路可以将交流信号转换成直流电信号。 负载可以由具有直流信号的输出端子供电。 电力转换器电路可以具有一次侧和二次侧的变压器。 可以使用脉冲宽度调制控制器来控制初级侧的晶体管。 二极管可以与变压器的次级侧和负载串联耦合。 为了在较大负载电流下提高效率，同步整流器控制电路可以调制与二极管并联耦合的次级侧上的晶体管。 同步整流器控制电路可以监测次级侧上的晶体管上的电压脉冲，或者可以进行直接负载电流测量，以确定负载电流流动的程度。 在低负载条件下，可以抑制同步整流，提高效率。
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公开(公告)号：US20160299622A1
公开(公告)日：2016-10-13
申请号：US15185729
申请日：2016-06-17
Applicant: Apple Inc.
Inventor： Nicholas A. Sims
CPC classification number: G06F3/0416 , G06F1/26 , G06F1/263 , G06F3/0418 , H02M1/44 , H02M3/33507
Abstract: The disclosed embodiments provide a system that facilitates the use of a portable electronic device. During operation, the system detects a coupling of a power supply to the portable electronic device through a set of wires. Next, the system uses the set of wires to identify a type of the power supply. The system then periodically determines a switching frequency of the power supply based on the type of the power supply and a current drawn from the power supply. Finally, the system uses the switching frequency to facilitate the operation of a touch control in the portable electronic device. For example, if the switching frequency corresponds to a sensing frequency of the touch control, the system may change the sensing frequency to an alternative sensing frequency.
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5.发明申请HYSTERETIC-MODE PULSE FREQUENCY MODULATED (HM-PFM) RESONANT AC TO DC CONVERTER 有权霍尔型脉冲频率调制（HM-PFM）谐波交直流转换器公开(公告)号：US20140160805A1
公开(公告)日：2014-06-12
申请号：US13720811
申请日：2012-12-19
Applicant: APPLE INC.
Inventor： InHwan Oh , Nicholas A. Sims
IPC: H02M3/335
CPC classification number: H02M3/33507 , H02M1/08 , H02M1/14 , H02M1/4241 , H02M1/4258 , H02M1/44 , H02M7/217 , Y02B70/126 , Y02B70/1441
Abstract: The disclosed embodiments provide an AC/DC power converter that converts an AC input voltage into a DC output voltage. This AC/DC power converter includes an input rectifier stage which rectifies an AC input voltage into a first rectified voltage. The AC/DC power converter also includes a switching resonant stage which is directly coupled to the output of the input rectifier stage. The switching resonant stage converts the rectified voltage into a first high frequency AC voltage of a first amplitude. This AC/DC power converter additionally includes a transformer which is coupled to the output of the switching resonant stage and is configured to down-convert the first high frequency AC voltage into a second high frequency AC voltage of a second amplitude. Furthermore, the AC/DC power converter includes an output rectifier stage which is coupled to the output of the transformer, wherein the output rectifier stage rectifies the second high frequency AC voltage into a DC output voltage.
Abstract translation: 所公开的实施例提供将AC输入电压转换为DC输出电压的AC / DC功率转换器。 该AC / DC电力转换器包括将AC输入电压整流为第一整流电压的输入整流级。 AC / DC功率转换器还包括直接耦合到输入整流级的输出的开关谐振级。 开关谐振级将整流电压转换为第一幅度的第一高频AC电压。 该AC / DC功率转换器还包括耦合到开关谐振级的输出的变压器，并且被配置为将第一高频AC电压下变频为第二幅度的第二高频AC电压。 此外，AC / DC功率转换器包括耦合到变压器的输出的输出整流器级，其中输出整流器级将第二高频AC电压整流为DC输出电压。
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Patent Agency Ranking
公开(公告)号：US10677827B2
公开(公告)日：2020-06-09
申请号：US15489467
申请日：2017-04-17
Applicant: Apple Inc.
Inventor： Nicholas A. Sims , Jeffrey J. Terlizzi , Alexei Kosut , Timothy Johnson , Barry Corlett
Abstract: An alternating current (AC) to direct current (DC) power converter may have a connector with a pair of power supply contacts and a pair of data contacts. An electronic device may be connected to the connector of the power converter. The power converter may supply DC power to the electronic device using the power supply contacts. The power converter may include control circuitry that has a resistor coupled across the data contacts. When the electronic device and the power converter are connected to each other, each may advertise to the other that capabilities are present that exceed industry standards. At the same time, standard-compliant discovery operations may be performed to probe the value of the resistance of the resistor that is coupled across the data contacts. When extended capabilities are discovered, extended functions may be performed including accelerated charging functions and data communications functions.
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7.发明申请HYSTERETIC-MODE PULSE FREQUENCY MODULATED (HM-PFM) RESONANT AC TO DC CONVERTER 审中-公开霍尔型脉冲频率调制（HM-PFM）谐波交直流转换器公开(公告)号：US20160294291A1
公开(公告)日：2016-10-06
申请号：US15182234
申请日：2016-06-14
Applicant: Apple Inc.
Inventor： InHwan Oh , Nicholas A. Sims
CPC classification number: H02M3/33507 , H02M1/08 , H02M1/14 , H02M1/4241 , H02M1/4258 , H02M1/44 , H02M7/217 , Y02B70/126 , Y02B70/1441
Abstract: The disclosed embodiments provide an AC/DC power converter that converts an AC input voltage into a DC output voltage. This AC/DC power converter includes an input rectifier stage which rectifies an AC input voltage into a first rectified voltage. The AC/DC power converter also includes a switching resonant stage which is directly coupled to the output of the input rectifier stage. The switching resonant stage converts the rectified voltage into a first high frequency AC voltage of a first amplitude. This AC/DC power converter additionally includes a transformer which is coupled to the output of the switching resonant stage and is configured to down-convert the first high frequency AC voltage into a second high frequency AC voltage of a second amplitude. Furthermore, the AC/DC power converter includes an output rectifier stage which is coupled to the output of the transformer, wherein the output rectifier stage rectifies the second high frequency AC voltage into a DC output voltage.
Abstract translation: 所公开的实施例提供将AC输入电压转换为DC输出电压的AC / DC功率转换器。 该AC / DC电力转换器包括将AC输入电压整流为第一整流电压的输入整流级。 AC / DC功率转换器还包括直接耦合到输入整流级的输出的开关谐振级。 开关谐振级将整流电压转换为第一幅度的第一高频AC电压。 该AC / DC功率转换器还包括耦合到开关谐振级的输出的变压器，并且被配置为将第一高频AC电压下变频为第二幅度的第二高频AC电压。 此外，AC / DC功率转换器包括耦合到变压器的输出的输出整流器级，其中输出整流器级将第二高频AC电压整流为DC输出电压。
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8.发明授权公开(公告)号：US09419526B2
公开(公告)日：2016-08-16
申请号：US13705476
申请日：2012-12-05
Applicant: Apple Inc.
Inventor： Asif Hussain , Nicholas A. Sims
CPC classification number: H02M3/33507 , H02M1/44 , H02M3/1584 , H02M3/285 , H02M3/33515 , H02M3/33561 , H02M2001/007 , H02M2001/008 , H02M2001/009
Abstract: A power supply with reduced electromagnetic interference (EMI) is described. This power supply includes cascaded stages with switched-mode power-supply circuits that are switched synchronously during operation by switching signals that have a common fundamental frequency. EMI associated with the power supply is reduced by establishing a phase shift between the switching signals in at least two of the stages.
Abstract translation: 描述了具有降低的电磁干扰（EMI）的电源。 该电源包括级联级，其中开关模式电源电路在操作期间通过切换具有共同基频的信号同步地切换。 通过在至少两个级中的开关信号之间建立相移来减小与电源相关联的EMI。
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公开(公告)号：US20160091940A1
公开(公告)日：2016-03-31
申请号：US14831682
申请日：2015-08-20
Applicant: Apple Inc.
Inventor： InHwan Oh , Marco Soldano , Nicholas A. Sims , Manisha P. Pandya , Bogdan T. Bucheru
CPC classification number: G06F1/26
Abstract: An electronic device has an I/O port, a bus connector and a transistor that is connected between the I/O port and a communications contact of the bus connector. A control circuit is connected to the transistor to maintain a gate voltage of the transistor independent of power supply voltage on a power supply contact of the connector. Other embodiments are also described and claimed.
Abstract translation: 电子设备具有连接在I / O端口和总线连接器的通信接点之间的I / O端口，总线连接器和晶体管。 控制电路连接到晶体管以保持晶体管的栅极电压，而不依赖于连接器的电源触点上的电源电压。 还描述和要求保护其他实施例。
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10.发明授权公开(公告)号：US09941800B2
公开(公告)日：2018-04-10
申请号：US14843777
申请日：2015-09-02
Applicant: Apple Inc.
Inventor： Juan Carlos Pastrana , Manisha P. Pandya , Sameer G. Kelkar , Nicholas A. Sims
CPC classification number: H02M3/33507 , G01R19/0084 , H02M2001/0022
Abstract: The disclosed embodiments provide a system that operates switched-mode power supplies, such as flyback converters. The power supplies may comprise isolated or non-isolated power converters. During operation, the system senses an on-time of a primary switch in the power converter. Upon detecting that the on-time does not exceed an on-time threshold within a first pre-specified period that spans one or more switching cycles, the system extends the on-time during a subsequent switching cycle to at least meet the on-time threshold. The system may then measure the voltage on one or more reference windings of the power converter during the on-time of the subsequent switching cycle, wherein the reference winding may comprise, e.g., an auxiliary winding of the primary winding of the power converter or a secondary winding of the power converter (e.g., in the case of isolated power converters utilizing a transformer).
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