公开(公告)号：US20160043646A1

公开(公告)日：2016-02-11

申请号：US14799372

申请日：2015-07-14

Applicant: FDK CORPORATION

Inventor： Eiji Nagashima ,  Toshio Shibata

IPC: H02M3/335

CPC classification number: H02M3/33507 ,  G01R19/00

Abstract: A DC/DC converter 10 of the present invention is provided with a constant-voltage power supply circuit 11; a SENSE+ terminal; a SENSE−/OCPSEL terminal pulled up to a predetermined voltage VL through a pull-up resistor R8; and a controller 14 for controlling the constant-voltage power supply circuit 11, wherein the controller 14 controls the output voltage Vout of the constant-voltage power supply circuit 11 on the basis of a potential difference between the SENSE+ terminal and the SENSE−/OCPSEL terminal, on the condition that the voltage of the SENSE−/OCPSEL terminal is lower than a threshold voltage, and sets predetermined control parameters on the basis of the voltage of the SENSE−/OCPSEL terminal, on the condition that the voltage of the SENSE−/OCPSEL terminal is equal to or higher than the threshold voltage.

Abstract translation: 本发明的DC / DC转换器10具有恒压电源电路11， 一个SENSE +终端; SENSE / OCPSEL端子通过上拉电阻器R8上拉到预定电压VL; 以及用于控制恒压电源电路11的控制器14，其中控制器14基于SENSE +端子和SENSE- / OCPSEL之间的电位差来控制恒压电源电路11的输出电压Vout 在SENSE / OCPSEL端子的电压低于阈值电压的条件下，根据SENSE / OCPSEL端子的电压，根据SENSE / OCPSEL端子的电压设定预定的控制参数 - / OCPSEL端子等于或高于阈值电压。

公开(公告)号：US09490713B2

公开(公告)日：2016-11-08

申请号：US14799372

申请日：2015-07-14

Applicant: FDK CORPORATION

Inventor： Eiji Nagashima ,  Toshio Shibata

IPC: H02M3/335 ,  G01R19/00

CPC classification number: H02M3/33507 ,  G01R19/00

Abstract: A DC/DC converter 10 of the present invention is provided with a constant-voltage power supply circuit 11; a SENSE+ terminal; a SENSE−/OCPSEL terminal pulled up to a predetermined voltage VL through a pull-up resistor R8; and a controller 14 for controlling the constant-voltage power supply circuit 11, wherein the controller 14 controls the output voltage Vout of the constant-voltage power supply circuit 11 on the basis of a potential difference between the SENSE+ terminal and the SENSE−/OCPSEL terminal, on the condition that the voltage of the SENSE−/OCPSEL terminal is lower than a threshold voltage, and sets predetermined control parameters on the basis of the voltage of the SENSE−/OCPSEL terminal, on the condition that the voltage of the SENSE−/OCPSEL terminal is equal to or higher than the threshold voltage.

Abstract translation: 本发明的DC / DC转换器10具有恒压电源电路11， 一个SENSE +终端; SENSE / OCPSEL端子通过上拉电阻器R8上拉到预定电压VL; 以及用于控制恒压电源电路11的控制器14，其中控制器14基于SENSE +端子和SENSE- / OCPSEL之间的电位差来控制恒压电源电路11的输出电压Vout 在SENSE / OCPSEL端子的电压低于阈值电压的条件下，根据SENSE / OCPSEL端子的电压，根据SENSE / OCPSEL端子的电压设定预定的控制参数 - / OCPSEL端子等于或高于阈值电压。

公开(公告)号：US11196341B2

公开(公告)日：2021-12-07

申请号：US16771351

申请日：2018-09-25

Applicant: FDK CORPORATION

Inventor： Kenji Hamada ,  Toshio Shibata

IPC: H02M3/156 ,  H02M3/335

Abstract: The switching power supply is provided with a voltage converter including a switching element for inputting a voltage from an input terminal, and has a spread spectrum function of varying a switching frequency in the switching element within a predetermined variation range. The switching power supply has a frequency setting unit that sets the variation range of the switching frequency and raises a lower limit value of the set variation range when a value of the voltage input from the input terminal is equal to or more than a predetermined threshold, and a signal generator that generates a control signal for driving the switching element by varying the switching frequency within the variation range set by the frequency setting unit.