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公开(公告)号：US09685867B2
公开(公告)日：2017-06-20
申请号：US14466666
申请日：2014-08-22
Applicant: STMicroelectronics International N.V.
Inventor： Bohumil Janik
IPC: H02M3/158
CPC classification number: H02M3/1582
Abstract: A method supplies power from a power source to a load. The method includes, in a first mode, electrically coupling a step-down converter node of a step-down converter alternately to the power source via a conductive bypass path that bypasses a step-up converter and to ground. The step-up converter has an input electrically coupled to the power source and the step-down converter has an output electrically coupled to the load. The method further includes, in a second mode, coupling the step-down converter node alternately to the power source via the bypass path and to an output of the step-up converter.
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Patent Agency Ranking
2.发明授权DC-DC converter with enhanced automatic switching between CCM and DCM operating modes 有权DC-DC转换器，具有CCM和DCM工作模式之间的增强型自动切换功能公开(公告)号：US09276477B2
公开(公告)日：2016-03-01
申请号：US14085914
申请日：2013-11-21
Applicant: STMicroelectronics International N.V.
Inventor： Matthieu Thomas , Bohumil Janik , Ondrej Tlaskal
CPC classification number: H02M3/158 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: A DC-DC converter transitions between continuous conduction mode (CCM) and discontinuous conduction mode (DCM) without causing any overshoot or undershoot deviation output voltage. The DC-DC converter operates in a PWM mode in CCM. During DCM, it skips PWM pulses when a sustained negative current is detected in an output inductor. The current sensing is achieved by sampling and integrating a voltage, the sign of which is inverse to current direction. The sample and hold and integrator circuits are small, simple, and scale to high frequencies. The pulse skipping circuit automatically adjusts the duty cycle of power pulses to force a zero inductor current at the end of each pulse.
Abstract translation: DC-DC转换器在连续导通模式（CCM）和不连续导通模式（DCM）之间转换，而不会引起任何过冲或下冲偏差输出电压。 DC-DC转换器在CCM中以PWM模式工作。 在DCM期间，当在输出电感中检测到持续的负电流时，它会跳过PWM脉冲。 电流检测通过采样和积分一个电压来实现，该电压的符号与当前方向相反。 采样和保持和积分电路小巧，简单，并可扩展到高频。 脉冲跳跃电路自动调整功率脉冲的占空比，以在每个脉冲结束时强制产生零电感电流。
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公开(公告)号：US09819268B2
公开(公告)日：2017-11-14
申请号：US15016908
申请日：2016-02-05
Applicant: STMicroelectronics International N.V.
Inventor： Matthieu Thomas , Bohumil Janik , Ondrej Tlaskal
CPC classification number: H02M3/158 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: An electronic device includes first and second transistors coupled in series between first and second source voltage levels. An inductor is coupled between a node coupling the first and second transistors and a load. Control logic is operative to generate control pulses operative to switch the first and second transistors. The controller generates the control pulses as a continuous stream of control pulses in a continuous conduction mode, and skips generation of some control pulses in a discontinuous conduction mode in response to a pulse skipping signal. A pulse skipping circuit is operative to generate a sense voltage as a function of an inductor current in the inductor, compare the sense voltage to ground, and generate a pulse skipping signal to the control logic when the sense voltage is below ground.
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4.发明申请DC-DC SWITCHING CONVERTER WITH ENHANCED SWITCHING BETWEEN CCM AND DCM OPERATING MODES 审中-公开具有CCM和DCM操作模式之间增强切换的DC-DC开关转换器公开(公告)号：US20160156268A1
公开(公告)日：2016-06-02
申请号：US15016908
申请日：2016-02-05
Applicant: STMicroelectronics International N.V.
Inventor： Matthieu Thomas , Bohumil Janik , Ondrej Tlaskal
IPC: H02M3/158
CPC classification number: H02M3/158 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: An electronic device includes first and second transistors coupled in series between first and second source voltage levels. An inductor is coupled between a node coupling the first and second transistors and a load. Control logic is operative to generate control pulses operative to switch the first and second transistors. The controller generates the control pulses as a continuous stream of control pulses in a continuous conduction mode, and skips generation of some control pulses in a discontinuous conduction mode in response to a pulse skipping signal. A pulse skipping circuit is operative to generate a sense voltage as a function of an inductor current in the inductor, compare the sense voltage to ground, and generate a pulse skipping signal to the control logic when the sense voltage is below ground.
Abstract translation: 电子器件包括串联耦合在第一和第二源极电压电平之间的第一和第二晶体管。 电感器耦合在耦合第一和第二晶体管的节点与负载之间。 控制逻辑用于产生可操作地切换第一和第二晶体管的控制脉冲。 控制器产生作为连续导通模式的连续控制脉冲流的控制脉冲，并且响应于脉冲跳跃信号跳过不连续导通模式中的一些控制脉冲的产生。 脉冲跳跃电路用于产生作为电感器中的电感器电流的函数的感测电压，将感测电压与地相比较，并且当感测电压低于地电位时，产生脉冲跳跃信号到控制逻辑。
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公开(公告)号：US20160056713A1
公开(公告)日：2016-02-25
申请号：US14466666
申请日：2014-08-22
Applicant: STMicroelectronics International N.V.
Inventor： Bohumil Janik
IPC: H02M3/06
CPC classification number: H02M3/1582
Abstract: A method supplies power from a power source to a load. The method includes, in a first mode, electrically coupling a step-down converter node of a step-down converter alternately to the power source via a conductive bypass path that bypasses a step-up converter and to ground. The step-up converter has an input electrically coupled to the power source and the step-down converter has an output electrically coupled to the load. The method further includes, in a second mode, coupling the step-down converter node alternately to the power source via the bypass path and to an output of the step-up converter.
Abstract translation: 一种方法从电源向负载供电。 该方法包括在第一模式中，经由绕过升压转换器并接地的导电旁通路径将降压转换器的降压转换器节点电耦合到电源。 升压转换器具有电耦合到电源的输入端，并且降压转换器具有电耦合到负载的输出端。 该方法还包括在第二模式中，经由旁路路径和降压转换器的输出将降压转换器节点交替地耦合到电源。
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6.发明申请DC-DC Converter with Enhanced Automatic Switching Between CCM and DCM Operating Modes 有权DC-DC转换器，具有CCM和DCM工作模式之间增强的自动切换功能公开(公告)号：US20150137776A1
公开(公告)日：2015-05-21
申请号：US14085914
申请日：2013-11-21
Applicant: STMicroelectronics International N.V.
Inventor： Matthieu Thomas , Bohumil Janik , Ondrej Tlaskal
IPC: H02M3/158
CPC classification number: H02M3/158 , H02M3/1588 , H02M2001/0009 , H02M2001/0025 , H02M2001/0032 , Y02B70/1466 , Y02B70/16
Abstract: A DC-DC converter transitions between continuous conduction mode (CCM) and discontinuous conduction mode (DCM) without causing any overshoot or undershoot deviation output voltage. The DC-DC converter operates in a PWM mode in CCM. During DCM, it skips PWM pulses when a sustained negative current is detected in an output inductor. The current sensing is achieved by sampling and integrating a voltage, the sign of which is inverse to current direction. The sample and hold and integrator circuits are small, simple, and scale to high frequencies. The pulse skipping circuit automatically adjusts the duty cycle of power pulses to force a zero inductor current at the end of each pulse.
Abstract translation: DC-DC转换器在连续导通模式（CCM）和不连续导通模式（DCM）之间转换，而不会引起任何过冲或下冲偏差输出电压。 DC-DC转换器在CCM中以PWM模式工作。 在DCM期间，当在输出电感中检测到持续的负电流时，它会跳过PWM脉冲。 电流检测通过采样和积分一个电压来实现，该电压的符号与当前方向相反。 采样和保持和积分电路小巧，简单，并可扩展到高频。 脉冲跳跃电路自动调整功率脉冲的占空比，以在每个脉冲结束时强制产生零电感电流。
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