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公开(公告)号：US08749994B2
公开(公告)日：2014-06-10
申请号：US14043199
申请日：2013-10-01
Applicant: NXP B.V.
Inventor： Jeroen Kleinpenning
CPC classification number: H02M3/33523
Abstract: Consistent with example embodiments disclosed, there are switched-mode power supplies (SMPS) in which a signaling capacitor transmits information across a transformer of the power supply. Such embodiments can avoid drawing power from the output capacitor in order to provide communication signals and so do not cause a drop in the output voltage when signaling to the primary side. Further, the switched mode power supply can send signals from the secondary side of the transformer to the primary side via the transformer itself and so may not require the incorporation of an opto-coupler. Such embodiments may reduce production costs, the printed circuit board (PCB) footprint and reduce the no-load power consumption of the SMPS.
Abstract translation: 与所公开的示例实施例一致，存在开关模式电源（SMPS），其中信号电容器跨越电源的变压器传输信息。 这样的实施例可以避免从输出电容器抽取功率以便提供通信信号，因此当向初级侧发信号时不会引起输出电压的下降。 此外，开关模式电源可以经由变压器本身将信号从变压器的次级侧发送到初级侧，因此可能不需要并入光耦合器。 这样的实施例可以降低生产成本，印刷电路板（PCB）占用空间并降低SMPS的空载功耗。
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公开(公告)号：US11451134B2
公开(公告)日：2022-09-20
申请号：US16435380
申请日：2019-06-07
Applicant: NXP B.V.
Inventor： Jeroen Kleinpenning , Jacobus Govert Sneep , Tsung-Pin Tang
Abstract: Embodiments of a method and a device are disclosed. In an embodiment, a method for discharging an output capacitor of a power supply is disclosed. The power supply includes a primary side for receiving a signal to be converted and a secondary side for outputting a converted signal. The method involves detecting whether synchronous rectification (SR) circuitry at the secondary side is inactive, determining that the primary side is disconnected from a mains voltage when the SR circuitry is detected to be inactive, and discharging an output capacitor at the secondary side based on the determination that the primary side is disconnected from the mains voltage.
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公开(公告)号：US10003210B2
公开(公告)日：2018-06-19
申请号：US14827758
申请日：2015-08-17
Applicant: NXP B.V.
Inventor： Jeroen Kleinpenning , Jan Dikken
CPC classification number: H02J7/0081 , H02J7/0073 , H02M3/1588 , H02M2001/0006 , H02M2001/0035 , Y02B70/1466 , Y02B70/16
Abstract: A controller for a switched mode power supply, wherein the controller is configured to be connected to a synchronous rectifier. The controller comprising: a voltage comparator configured to determine satisfaction of a voltage criterion, wherein the voltage criterion is satisfied when a conduction channel voltage between a first-conduction-channel terminal and a second-conduction-channel terminal meets a first pre-determined voltage threshold; and a timer configured to determine satisfaction of a time criterion, wherein the time criterion is satisfied when a voltage associated with the synchronous rectifier meets a second predetermined voltage threshold for greater than a pre-determined time; the controller configured to provide for a normal mode of operation based on satisfaction of the voltage criterion and a power-saving mode of operation based on satisfaction of the time criterion, wherein the controller is configured to draw a power-saving-mode current in the power-saving mode of operation, and draw a normal-mode current in the normal mode of operation, wherein a magnitude of the normal-mode current is greater than a magnitude of the power-saving-mode current.
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公开(公告)号：US09906145B2
公开(公告)日：2018-02-27
申请号：US15184573
申请日：2016-06-16
Applicant: NXP B.V.
CPC classification number: H02M3/33523 , H02M1/08 , H02M1/32 , H02M2001/0032 , Y02B70/16
Abstract: An apparatus for delivering power to a load, which comprises a power converter that converts input power at a primary side to an output power and to a supply voltage to a secondary side. On the secondary side, a load switch is located on a current path to the load. A secondary-side control circuitry controls the load switch to operate in an ON mode in which current is provided to the load, and in response to a fault condition corresponding a voltage drop across the load switch exceeding a threshold value, activates circuitry on the secondary side. The circuitry, in response to the fault condition, causes the primary-side control circuitry to limit an extent to which the power converter is capable of supplying power.
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公开(公告)号：US20170366092A1
公开(公告)日：2017-12-21
申请号：US15184573
申请日：2016-06-16
Applicant: NXP B.V.
CPC classification number: H02M3/33523 , H02M1/08 , H02M1/32 , H02M2001/0032 , Y02B70/16
Abstract: An apparatus for delivering power to a load, which comprises a power converter that converts input power at a primary side to an output power and to a supply voltage to a secondary side. On the secondary side, a load switch is located on a current path to the load. A secondary-side control circuitry controls the load switch to operate in an ON mode in which current is provided to the load, and in response to a fault condition corresponding a voltage drop across the load switch exceeding a threshold value, activates circuitry on the secondary side. The circuitry, in response to the fault condition, causes the primary-side control circuitry to limit an extent to which the power converter is capable of supplying power.
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Patent Agency Ranking
公开(公告)号：US20200212814A1
公开(公告)日：2020-07-02
申请号：US16725141
申请日：2019-12-23
Applicant: NXP B.V.
Inventor： Jeroen Kleinpenning
Abstract: A controller for a secondary side of a switched mode power supply. A thermistor and an LED of an optocoupler are connected in parallel with each other between a voltage-supply-pin and a STOP pin of the controller. A reference-source provides a reference-signal between the STOP pin and the voltage-supply-pin. The STOP pin receives a temperature-measurement-signal from the thermistor, wherein the temperature-measurement-signal is representative of the resistance of the thermistor. The controller also includes an OTP-comparator that compares: (i) the temperature-measurement-signal; with (ii) a threshold-level, and provides an OTP-signal that is representative of whether or not the temperature-measurement-signal at the STOP pin crosses the threshold-level; and a switchable-current-source that selectively provides a bias-current to the STOP pin based on the OTP-signal, wherein the bias-current causes the LED to emit a light-signal that is representative of a fault to an associated photo-detector.
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公开(公告)号：US10333411B2
公开(公告)日：2019-06-25
申请号：US14984734
申请日：2015-12-30
Applicant: NXP B.V.
Inventor： Jan Dikken , Jeroen Kleinpenning
IPC: H02M3/335 , H03K17/042 , H03K17/16 , H03K17/30
Abstract: There is disclosed a controller configured to control a synchronous rectification MOSFET having a drain, a source and a gate; the controller comprising a regulator configured to regulate a voltage between the drain and the source to a first regulation voltage, and a gate charger operable during a turn-on phase of the synchronous rectification MOSFET operation and configured to regulate a voltage between the drain and the source to a second regulation voltage having a larger absolute value than the absolute value of the first regulation voltage, wherein the gate charger is further configured to, when in operation, disable the regulator. Also disclosed is a switched mode power converter comprising such a synchronous rectification MOSFET, and a method for controlling such a synchronous rectification MOSFET.
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8.发明授权公开(公告)号：US10128766B1
公开(公告)日：2018-11-13
申请号：US15689672
申请日：2017-08-29
Applicant: NXP B.V.
Inventor： Joan Wichard Strijker , Jeroen Kleinpenning
Abstract: Various embodiments relate to a method and circuit for maintaining zero voltage switching while having a fixed switching frequency, the method including switching on a first switch, on a primary side, at a beginning of a primary stroke of a time period at zero voltage and switching off the first switch at an end of the primary stroke, switching on a second switch, on a secondary side, at a beginning of a secondary stroke of a time period and switching off the second switch at an end of the secondary stoke of a time period and switching on a second switch at a beginning of a ringing period of the time period and switching off the second switch at an end of a bi-directional flyback action.
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公开(公告)号：US11056978B2
公开(公告)日：2021-07-06
申请号：US16725141
申请日：2019-12-23
Applicant: NXP B.V.
Inventor： Jeroen Kleinpenning
Abstract: A controller for a secondary side of a switched mode power supply. A thermistor and an LED of an optocoupler are connected in parallel with each other between a voltage-supply-pin and a STOP pin of the controller. A reference-source provides a reference-signal between the STOP pin and the voltage-supply-pin. The STOP pin receives a temperature-measurement-signal from the thermistor, wherein the temperature-measurement-signal is representative of the resistance of the thermistor. The controller also includes an OTP-comparator that compares: (i) the temperature-measurement-signal; with (ii) a threshold-level, and provides an OTP-signal that is representative of whether or not the temperature-measurement-signal at the STOP pin crosses the threshold-level; and a switchable-current-source that selectively provides a bias-current to the STOP pin based on the OTP-signal, wherein the bias-current causes the LED to emit a light-signal that is representative of a fault to an associated photo-detector.
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公开(公告)号：US09923475B2
公开(公告)日：2018-03-20
申请号：US15142615
申请日：2016-04-29
Applicant: NXP B.V.
Inventor： Jeroen Kleinpenning , Jan Dikken
CPC classification number: H02M3/33592 , H02M1/08 , H02M2001/0009 , H02M2001/0038 , Y02B70/1475
Abstract: Disclosed is a method to control the synchronous rectification in a power converter including a primary winding and a secondary winding, including detecting a peak current in a secondary winding, determining a blanking threshold based on the peak current, and blanking a turning off of a synchronous rectifier (SR) switch for a blanking time based on the blanking threshold.
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