公开(公告)号：US20210226535A1

公开(公告)日：2021-07-22

申请号：US17220622

申请日：2021-04-01

Applicant: Linear Technology Corporation

Inventor： Min Chen ,  Bryan Avery Legated

IPC: H02M3/158

Abstract: A peak-buck peak-boost current mode control structure and scheme for a synchronous four-switch and non-synchronous two-switch buck-boost regulators sense input and output voltages to smoothly transition between buck mode, buck-boost mode, and boost mode for high power efficiency and low output ripples. With the inductor current sensing, the control scheme achieves the best performance in continuous conduction and discontinuous condition mode operations.

公开(公告)号：US20160164411A1

公开(公告)日：2016-06-09

申请号：US14660739

申请日：2015-03-17

Applicant: Linear Technology Corporation

Inventor： Min Chen ,  Bryan Avery Legates

IPC: H02M3/158

Abstract: A peak-buck peak-boost current mode control structure and scheme for a synchronous four-switch and non-synchronous two-switch buck-boost regulators sense input and output voltages to smoothly transition between buck mode, buck-boost mode, and boost mode for high power efficiency and low output ripples. With the inductor current sensing, the control scheme achieves the best performance in continuous conduction and discontinuous condition mode operations.

Abstract translation: 用于同步四开关和非同步双开关降压 - 升压调节器的峰值降压峰值升压电流模式控制结构和方案可以检测输入和输出电压，以在降压模式，降压 - 升压模式和升压模式之间平滑过渡 用于高功率效率和低输出波纹。 通过电感电流检测，控制方案在连续导通和不连续状态模式下实现最佳性能。

公开(公告)号：US09977446B2

公开(公告)日：2018-05-22

申请号：US15593266

申请日：2017-05-11

Applicant: Linear Technology Corporation

Inventor： Hezekiel D. Randolph ,  Min Chen ,  Niranjan G. Kumar

IPC: G06G7/12 ,  G05F1/575 ,  H03F3/45 ,  H03K5/24

CPC classification number: G05F1/575 ,  H03F3/45183 ,  H03F3/4521 ,  H03F3/45273 ,  H03F2200/471 ,  H03K5/24

Abstract: In the example of a voltage regulator outputting a negative voltage, its feedback voltage will also be negative. The feedback voltage is typically created using a resistor divider. A controller IC is powered by only a positive voltage and receives the negative feedback voltage at a high impedance input of an inverting amplifier. Therefore, the inverting amplifier does not load the resistor divider, resulting in an accurate regulated output voltage. The inverting amplifier converts the negative feedback voltage to a positive feedback voltage for further processing by the controller IC. An error amplifier and a power good monitor receive both the original feedback voltage and the inverted feedback voltage and use whichever feedback voltage is the more positive one. Therefore, the controller IC may be used in voltage regulators that generate either negative or positive output voltages.

公开(公告)号：US20170336817A1

公开(公告)日：2017-11-23

申请号：US15593266

申请日：2017-05-11

Applicant: Linear Technology Corporation

Inventor： Hezekiel D. Randolph ,  Min Chen ,  Niranjan G. Kumar

IPC: G05F1/575 ,  H03F3/45 ,  H03K5/24

CPC classification number: G05F1/575 ,  H03F3/45183 ,  H03F3/4521 ,  H03F3/45273 ,  H03F2200/471 ,  H03K5/24

Abstract: In the example of a voltage regulator outputting a negative voltage, its feedback voltage will also be negative. The feedback voltage is typically created using a resistor divider. A controller IC is powered by only a positive voltage and receives the negative feedback voltage at a high impedance input of an inverting amplifier. Therefore, the inverting amplifier does not load the resistor divider, resulting in an accurate regulated output voltage. The inverting amplifier converts the negative feedback voltage to a positive feedback voltage for further processing by the controller IC. An error amplifier and a power good monitor receive both the original feedback voltage and the inverted feedback voltage and use whichever feedback voltage is the more positive one. Therefore, the controller IC may be used in voltage regulators that generate either negative or positive output voltages.