公开(公告)号：US20150280544A1

公开(公告)日：2015-10-01

申请号：US14260690

申请日：2014-04-24

申请人： Basa Wang ,  Zhijie Zhu

发明人： Basa Wang ,  Zhijie Zhu

IPC分类号： H02M1/32 ,  H02M3/158

CPC分类号： H02M1/32 ,  H02M3/156 ,  H02M2001/0009

摘要： An apparatus comprises a switching circuit, an error amplifier circuit, a current threshold circuit, and an over-current detection circuit. The switching circuit provides a switching duty cycle that includes a charge portion and a discharge portion. The error amplifier circuit generates an error signal representative of a difference between a target voltage value and a voltage at an output of the voltage regulator circuit. The switching circuit adjusts the switching duty cycle to regulate the voltage at the output using the error signal and a reference waveform signal. The current threshold circuit generates an adaptive peak current limit threshold. The over-current detection circuit generates an over-current signal when the reference waveform signal satisfies the adaptive peak current limit threshold during the charging portion of the switching cycle. The switching circuit interrupts one or more switching cycles when the reference waveform signal satisfies the adaptive peak current limit threshold.

摘要翻译： 一种装置包括开关电路，误差放大器电路，电流阈值电路和过电流检测电路。 开关电路提供包括充电部分和放电部分的开关占空比。 误差放大器电路产生表示目标电压值与电压调节器电路输出端的电压之差的误差信号。 开关电路调整开关占空比，以使用误差信号和参考波形信号来调节输出端的电压。 电流阈值电路产生自适应峰值电流限制阈值。 当在开关周期的充电部分中参考波形信号满足自适应峰值电流限制阈值时，过电流检测电路产生过电流信号。 当参考波形信号满足自适应峰值电流限制阈值时，开关电路中断一个或多个开关周期。

公开(公告)号：US08860395B2

公开(公告)日：2014-10-14

申请号：US13343615

申请日：2012-01-04

申请人： Basa Wang ,  Kevin Yao ,  Jack Zhu ,  Helen Yu

发明人： Basa Wang ,  Kevin Yao ,  Jack Zhu ,  Helen Yu

IPC分类号： G05F1/00 ,  H03K4/06 ,  H02M3/156 ,  H02M1/00

CPC分类号： H02M3/156 ,  H02M2001/0025

摘要： The present invention relates to a circuit and method of generating a ramp compensation voltage as might be used in a switching regulator. The ramp compensation voltage comprises: a charging current generating circuit configured to receive a switching signal having a frequency of fs, a duty cycle of D and a period of Ts, the charging current generating circuit generating a charging current in direct proportion to f s ( 1 - D ) ⁢ DTs ; and a voltage generating circuit for generating a quadratic ramp compensation voltage by means of the charging current. The resulting ramp compensation voltage enables the switching regulator to operate over a broad range of duty cycles. The generated ramp compensation voltage has an amplitude as low as possible, the generated compensation slope approximates to the target compensation slope as close as possible, and over compensation at low duty cycles is reduced as far as possible.

摘要翻译： 本发明涉及一种产生可能用于开关调节器中的斜坡补偿电压的电路和方法。 斜坡补偿电压包括：充电电流产生电路，被配置为接收具有频率fs，占空比D和周期Ts的开关信号，充电电流产生电路产生与fs（1）成正比的充电电流 - D）DTs; 以及用于通过充电电流产生二次斜坡补偿电压的电压产生电路。 所产生的斜坡补偿电压使开关稳压器能够在宽范围的占空比下工作。 产生的斜坡补偿电压的幅度尽可能的低，产生的补偿斜率尽可能接近目标补偿斜率，尽可能地减少低占空比的过补偿。

公开(公告)号：US20130043850A1

公开(公告)日：2013-02-21

申请号：US13364711

申请日：2012-02-02

申请人： Jack Zhu ,  Basa Wang ,  Kevin Yao ,  Helen Yu

发明人： Jack Zhu ,  Basa Wang ,  Kevin Yao ,  Helen Yu

IPC分类号： G05F1/46

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  Y02B70/16

摘要： A switching regulator and control method for the same. The switching regulator employs a hybrid mode. A ramp voltage signal is added to the current sense signal to make the ramp voltage signal overtake the current information when the duty cycle becomes low.

摘要翻译： 一种开关调节器及其控制方法。 开关稳压器采用混合模式。 当电流检测信号加上斜坡电压信号时，当占空比变低时，使斜坡电压信号超过电流信息。

公开(公告)号：US08994352B2

公开(公告)日：2015-03-31

申请号：US13364711

申请日：2012-02-02

申请人： Jack Zhu ,  Basa Wang ,  Kevin Yao ,  Helen Yu

发明人： Jack Zhu ,  Basa Wang ,  Kevin Yao ,  Helen Yu

IPC分类号： H02M3/156 ,  H02M1/00

CPC分类号： H02M3/156 ,  H02M2001/0032 ,  Y02B70/16

摘要： A switching regulator and control method for the same. The switching regulator employs a hybrid mode. A ramp voltage signal is added to the current sense signal to make the ramp voltage signal overtake the current information when the duty cycle becomes low.

摘要翻译： 一种开关调节器及其控制方法。 开关稳压器采用混合模式。 当电流检测信号加上斜坡电压信号时，当占空比变低时，使斜坡电压信号超过电流信息。

公开(公告)号：US20130043856A1

公开(公告)日：2013-02-21

申请号：US13343615

申请日：2012-01-04

申请人： Basa Wang ,  Kevin Yao ,  Jack Zhu ,  Helen Yu

发明人： Basa Wang ,  Kevin Yao ,  Jack Zhu ,  Helen Yu

IPC分类号： G05F1/10

CPC分类号： H02M3/156 ,  H02M2001/0025

摘要： The present invention relates to a circuit and method of generating a ramp compensation voltage as might be used in a switching regulator. The ramp compensation voltage comprises: a charging current generating circuit configured to receive a switching signal having a frequency of fs, a duty cycle of D and a period of Ts, the charging current generating circuit generating a charging current in direct proportion to f s ( 1 - D )  DTs ; and a voltage generating circuit for generating a quadratic ramp compensation voltage by means of the charging current. The resulting ramp compensation voltage enables the switching regulator to operate over a broad range of duty cycles. The generated ramp compensation voltage has an amplitude as low as possible, the generated compensation slope approximates to the target compensation slope as close as possible, and over compensation at low duty cycles is reduced as far as possible.

摘要翻译： 本发明涉及一种产生可能用于开关调节器中的斜坡补偿电压的电路和方法。 斜坡补偿电压包括：充电电流产生电路，被配置为接收具有频率fs，占空比D和周期Ts的开关信号，充电电流产生电路产生与fs（1）成正比的充电电流 - D）DT 以及用于通过充电电流产生二次斜坡补偿电压的电压产生电路。 所产生的斜坡补偿电压使开关稳压器能够在宽范围的占空比下工作。 产生的斜坡补偿电压的幅度尽可能的低，产生的补偿斜率尽可能接近目标补偿斜率，尽可能地减少低占空比的过补偿。