公开(公告)号：US09231478B2

公开(公告)日：2016-01-05

申请号：US14314175

申请日：2014-06-25

Applicant: Sony Computer Entertainment Inc.

Inventor： Kazuki Sasao ,  Kazuaki Mitsui

IPC: H02M3/158 ,  H02M1/084 ,  H02M1/088 ,  H02M1/08 ,  H02M1/00

CPC classification number: H02M3/1588 ,  H02M1/08 ,  H02M1/084 ,  H02M1/0845 ,  H02M1/088 ,  H02M3/1584 ,  H02M2001/0054 ,  H02M2003/1586 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: An M-channel (M is an integer of at least two) synchronous rectification type step-down DC/DC converter is provided. A controller in the converter (i) calculates a load current on a basis of currents flowing through M inductors, (ii) dynamically changes the number K of driving phases (K is an integer of up to M) on the basis of the calculated load current, (iii) generates a pulse signal adjusted in duty ratio such that an output voltage of an output line coincides with a predetermined reference voltage, (iv) selects K drivers among M drivers, and distributes the pulse signal with a phase difference of (360/K) degrees to each of the selected K drivers, and (v) monotonically increases an amplitude control signal indicating the amplitude of a gate driving voltage with respect to the calculated load current in a range determined in advance for each number K of driving phases.

Abstract translation: 提供M通道（M为至少为2的整数）同步整流型降压DC / DC转换器。 转换器（i）中的控制器基于流过M个电感器的电流来计算负载电流，（ii）基于所计算的负载来动态地改变驱动相位的数量K（K为整数为M） 电流，（iii）产生调节占空比的脉冲信号，使得输出线的输出电压与预定参考电压一致，（iv）在M个驱动器中选择K个驱动器，并将相位差为（ 360度/ K度），以及（v）单独地增加一个幅度控制信号，该振幅控制信号指示相对于计算出的负载电流的栅极驱动电压的幅度在针对驾驶的每个数量K预先确定的范围内 阶段

公开(公告)号：US08963525B2

公开(公告)日：2015-02-24

申请号：US14048730

申请日：2013-10-08

Applicant: Sony Computer Entertainment Inc.

Inventor： Kazuki Sasao ,  Kazuaki Mitsui

IPC: G05F1/40 ,  H02M3/158

CPC classification number: H02M3/1588 ,  H02M3/1584 ,  H02M2003/1586 ,  Y02B70/1466

Abstract: The present disclosure is to provide a DC/DC converter capable of suppressing increase in the ripple amount of the output voltage in association with switching of the number of drive phases. N (N is an integer equal to or larger than 2) switching circuits each generate a switching voltage at the switching node according to an input pulse signal. A phase controller dynamically switches the number K (K is an integer equal to or smaller than N) of drive phases according to the state of a DC/DC converter at the time. A pulse modulator generates a pulse signal whose frequency changes according to the number K of drive phases. A distributor selects K switching circuits among the N switching circuits and distributes the pulse signal to each of the selected K switching circuits with a phase difference of (360/K) degrees.

Abstract translation: 本公开是提供一种DC / DC转换器，其能够抑制与驱动相位数的切换相关联的输出电压的纹波量的增加。 N（N是等于或大于2的整数）开关电路根据输入脉冲信号在开关节点产生开关电压。 根据当时的DC / DC转换器的状态，相位控制器动态地切换驱动相位的数量K（K是等于或小于N的整数）。 脉冲调制器产生脉冲信号，其频率根据驱动相位数K而变化。 分配器在N个切换电路中选择K个开关电路，并以相位差（360 / K）度将脉冲信号分配给所选择的K个开关电路。

公开(公告)号：US20140111172A1

公开(公告)日：2014-04-24

申请号：US14048730

申请日：2013-10-08

Applicant: Sony Computer Entertainment Inc.

Inventor： Kazuki Sasao ,  Kazuaki Mitsui

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  H02M3/1584 ,  H02M2003/1586 ,  Y02B70/1466

Abstract: The present disclosure is to provide a DC/DC converter capable of suppressing increase in the ripple amount of the output voltage in association with switching of the number of drive phases. N (N is an integer equal to or larger than 2) switching circuits each generate a switching voltage at the switching node according to an input pulse signal. A phase controller dynamically switches the number K (K is an integer equal to or smaller than N) of drive phases according to the state of a DC/DC converter at the time. A pulse modulator generates a pulse signal whose frequency changes according to the number K of drive phases. A distributor selects K switching circuits among the N switching circuits and distributes the pulse signal to each of the selected K switching circuits with a phase difference of (360/K) degrees.

Abstract translation: 本公开是提供一种DC / DC转换器，其能够抑制与驱动相位数的切换相关联的输出电压的纹波量的增加。 N（N是等于或大于2的整数）开关电路根据输入脉冲信号在开关节点产生开关电压。 根据当时的DC / DC转换器的状态，相位控制器动态地切换驱动相位的数量K（K是等于或小于N的整数）。 脉冲调制器产生脉冲信号，其频率根据驱动相位数K而变化。 分配器在N个切换电路中选择K个开关电路，并以相位差（360 / K）度将脉冲信号分配给所选择的K个开关电路。

公开(公告)号：US20150008890A1

公开(公告)日：2015-01-08

申请号：US14314175

申请日：2014-06-25

Applicant: Sony Computer Entertainment Inc.

Inventor： Kazuki Sasao ,  Kazuaki Mitsui

IPC: H02M3/158

CPC classification number: H02M3/1588 ,  H02M1/08 ,  H02M1/084 ,  H02M1/0845 ,  H02M1/088 ,  H02M3/1584 ,  H02M2001/0054 ,  H02M2003/1586 ,  Y02B70/1466 ,  Y02B70/1491

Abstract: An M-channel (M is an integer of at least two) synchronous rectification type step-down DC/DC converter is provided. A controller in the converter (i) calculates a load current on a basis of currents flowing through M inductors, (ii) dynamically changes the number K of driving phases (K is an integer of up to M) on the basis of the calculated load current, (iii) generates a pulse signal adjusted in duty ratio such that an output voltage of an output line coincides with a predetermined reference voltage, (iv) selects K drivers among M drivers, and distributes the pulse signal with a phase difference of (360/K) degrees to each of the selected K drivers, and (vi) monotonically increases an amplitude control signal indicating the amplitude of a gate driving voltage with respect to the calculated load current in a range determined in advance for each number K of driving phases.

Abstract translation: 提供M通道（M为至少为2的整数）同步整流型降压DC / DC转换器。 转换器（i）中的控制器基于流过M个电感器的电流来计算负载电流，（ii）基于所计算的负载来动态地改变驱动相位的数量K（K为整数为M） 电流，（iii）产生调节占空比的脉冲信号，使得输出线的输出电压与预定参考电压一致，（iv）在M个驱动器中选择K个驱动器，并将相位差为（ 360度/ K度），以及（vi）单调地增加一个幅度控制信号，该振幅控制信号指示相对于计算出的负载电流的栅极驱动电压的幅度在针对驾驶的每个数量K预先确定的范围内 阶段

公开(公告)号：US08836305B2

公开(公告)日：2014-09-16

申请号：US13751710

申请日：2013-01-28

Applicant: Sony Computer Entertainment Inc.

Inventor： Kazuki Sasao ,  Kazuaki Mitsui

IPC: G05F1/40 ,  G05F1/46

CPC classification number: G05F1/46 ,  H02M3/156 ,  H02M2001/0009

Abstract: Based upon a detection voltage VL that develops between ISEN+ and ISEN− terminals, a current detection circuit detects a coil current IL that flows through an inductor. A measurement circuit is connected to an inductor, and measures an inductance value L and a DC resistance value RDC of the inductor in a calibration operation before normal operation of a DC/DC converter. Based upon the inductance value L and the DC resistance value RDC thus measured, the current detection circuit detects the coil current IL using the detection voltage VL.

Abstract translation: 基于在ISEN +和ISEN-端子之间产生的检测电压VL，电流检测电路检测流过电感器的线圈电流IL。 测量电路连接到电感器，并且在DC / DC转换器正常工作之前的校准操作中测量电感器的电感值L和直流电阻值RDC。 基于如此测量的电感值L和DC电阻值RDC，电流检测电路使用检测电压VL检测线圈电流IL。