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。

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

IPC: H02M3/157 ,  H02M3/158 ,  H02M1/00

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。

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

IPC: H02M3/156 ,  H02M3/158 ,  H02M3/157 ,  H02M1/00

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.

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。