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    • 3. 发明授权
    • Switching power supply with quick transient response
    • 开关电源具有快速瞬态响应
    • US08723496B2
    • 2014-05-13
    • US13582971
    • 2010-10-25
    • Weifeng SunMiao YangYoushan JinSichao LiuShen XuShengli LuLongxing Shi
    • Weifeng SunMiao YangYoushan JinSichao LiuShen XuShengli LuLongxing Shi
    • G05F1/00
    • H02M3/1588H02M2001/0025H02M2003/1566Y02B70/1466
    • A switching power supply with a quick transient response is provided. A hysteretic control loop which comprises a hysteretic controller (117) and a control signal gate (116) is added to the original PWM control loop of the switching power supply. The hysteretic controller (117) is used to detect an output voltage (Vout) of the switching power supply and compare the output voltage (Vout) of the switching power supply with a reference voltage (Vref). When a load current (Iout) of the switching power supply is suddenly changed, the output voltage (Vout) of the switching power supply fluctuates. If the output voltage (Vout) of the switching power supply is in a setting range of the hysteretic voltage, output terminals (SELp, SELn) of the hysteretic controller (117) are in a low potential, and the control signal gate (116) selects output signals (Qp1, Qn1) from a PWM controller (101) as input signals of a gate signal drive circuit (106). If the fluctuation of the output voltage (Vout) of the switching power supply exceeds the setting range of the hysteretic voltage, an output terminal (SELp, SELn) of the hysteretic controller (117) outputs a high potential, and the control signal gate (116) selects output signals (Qp2, Qn2) of the hysteretic controller (117) as input signals of the gate signal drive circuit (106), so the operation of switching tubes (111, 112) at the power lever (102) of the switching power supply is controlled to stabilize the output voltage (Vout).
    • 提供了具有快速瞬态响应的开关电源。 包括迟滞控制器(117)和控制信号门(116)的迟滞控制回路被添加到开关电源的原始PWM控制环路中。 迟滞控制器(117)用于检测开关电源的输出电压(Vout),并将开关电源的输出电压(Vout)与参考电压(Vref)进行比较。 当开关电源的负载电流(Iout)突然改变时,开关电源的输出电压(Vout)波动。 如果开关电源的输出电压(Vout)处于滞后电压的设定范围,则迟滞控制器(117)的输出端子(SELp,SELn)为低电位,控制信号门(116) 选择来自PWM控制器(101)的输出信号(Qp1,Qn1)作为门信号驱动电路(106)的输入信号。 如果开关电源的输出电压(Vout)的波动超过迟滞电压的设定范围,则迟滞控制器(117)的输出端子(SELp,SELn)输出高电位,控制信号门极 116)选择滞后控制器(117)的输出信号(Qp2,Qn2)作为门信号驱动电路(106)的输入信号,从而切换管(111,112)在动力杆(102) 控制开关电源以稳定输出电压(Vout)。
    • 4. 发明授权
    • Switch level circuit with dead time self-adapting control
    • 开关电平电路具有死区时间自适应控制
    • US08659345B2
    • 2014-02-25
    • US13515801
    • 2010-10-26
    • Shen XuWeifeng SunMiao YangSichao LiuYoushan JinShengli LuLongxing Shi
    • Shen XuWeifeng SunMiao YangSichao LiuYoushan JinShengli LuLongxing Shi
    • H03K17/687
    • H02M3/1588H02M2001/0048H02M2001/385Y02B70/1466Y02B70/1491
    • A switch level circuit (110) with dead time self-adapting control, which minimizes the switching loss in a switching power supply converter with synchronous rectification by changing a dead time between a high-side control transistor (10) and a low-side synchronous rectifying transistor (11). The switch level circuit (110) includes the high-side control transistor (10) and the low-side synchronous rectifying transistor (11) which are controlled to be on and off by external control signals, and a waveform with a given duty cycle is outputted at a node (LX) between the two transistors. The switch level circuit (110) also includes a control module for adjusting the dead time. The control module comprises a sampling circuit (16) for detecting the current dead time at the node (LX), an adjusting circuit (17) for buffering and converting the sampling voltage sampled by the sampling circuit (16), and a controlled delay unit (15) equipped with an external control input terminal, wherein the controlled delay unit (15) delays an external control signal and outputs the delayed signal to a controlled terminal of the low-side synchronous rectifying transistor (11) as a control signal. The switch level circuit (110) has simple structure, better performance and wide application range.
    • 一种具有死区时间自适应控制的开关电平电路(110),其通过改变高侧控制晶体管(10)和低侧同步(10)之间的死区时间而使得具有同步整流的开关电源转换器的开关损耗最小化 整流晶体管(11)。 开关电平电路(110)包括通过外部控制信号控制为接通和断开的高侧控制晶体管(10)和低侧同步整流晶体管(11),具有给定占空比的波形为 在两个晶体管之间的节点(LX)处输出。 开关电平电路(110)还包括用于调节死区时间的控制模块。 控制模块包括用于检测节点(LX)上的当前死区时间的采样电路(16),用于缓冲和转换由采样电路(16)采样的采样电压的调节电路(17),以及受控延迟单元 (15),其中所述受控延迟单元(15)延迟外部控制信号,并将延迟的信号作为控制信号输出到低侧同步整流晶体管(11)的受控端子。 开关电平电路(110)结构简单,性能好,应用范围广。
    • 5. 发明申请
    • SWITCHING POWER SUPPLY WITH QUICK TRANSIENT RESPONSE
    • 快速切换电源切换
    • US20120326688A1
    • 2012-12-27
    • US13582971
    • 2010-10-25
    • Weifeng SunMiao YangYoushan JinSichao LiuShen XuShengli LuLongxing Shi
    • Weifeng SunMiao YangYoushan JinSichao LiuShen XuShengli LuLongxing Shi
    • G05F1/618
    • H02M3/1588H02M2001/0025H02M2003/1566Y02B70/1466
    • A switching power supply with a quick transient response is provided. A hysteretic control loop which comprises a hysteretic controller (117) and a control signal gate (116) is added to the original PWM control loop of the switching power supply. The hysteretic controller (117) is used to detect an output voltage (Vout) of the switching power supply and compare the output voltage (Vout) of the switching power supply with a reference voltage (Vref). When a load current (Iout) of the switching power supply is suddenly changed, the output voltage (Vout) of the switching power supply fluctuates. If the output voltage (Vout) of the switching power supply is in a setting range of the hysteretic voltage, output terminals (SELp, SELn) of the hysteretic controller (117) are in a low potential, and the control signal gate (116) selects output signals (Qp1, Qn1) from a PWM controller (101) as input signals of a gate signal drive circuit (106). If the fluctuation of the output voltage (Vout) of the switching power supply exceeds the setting range of the hysteretic voltage, an output terminal (SELp, SELn) of the hysteretic controller (117) outputs a high potential, and the control signal gate (116) selects output signals (Qp2, Qn2) of the hysteretic controller (117) as input signals of the gate signal drive circuit (106), so the operation of switching tubes (111, 112) at the power lever (102) of the switching power supply is controlled to stabilize the output voltage (Vout).
    • 提供了具有快速瞬态响应的开关电源。 包括迟滞控制器(117)和控制信号门(116)的迟滞控制回路被添加到开关电源的原始PWM控制环路中。 迟滞控制器(117)用于检测开关电源的输出电压(Vout),并将开关电源的输出电压(Vout)与参考电压(Vref)进行比较。 当开关电源的负载电流(Iout)突然改变时,开关电源的输出电压(Vout)波动。 如果开关电源的输出电压(Vout)处于滞后电压的设定范围,则迟滞控制器(117)的输出端子(SELp,SELn)为低电位,控制信号门(116) 选择来自PWM控制器(101)的输出信号(Qp1,Qn1)作为门信号驱动电路(106)的输入信号。 如果开关电源的输出电压(Vout)的波动超过迟滞电压的设定范围,则迟滞控制器(117)的输出端子(SELp,SELn)输出高电位,控制信号门极 116)选择滞后控制器(117)的输出信号(Qp2,Qn2)作为门信号驱动电路(106)的输入信号,从而切换管(111,112)在动力杆(102) 控制开关电源以稳定输出电压(Vout)。
    • 7. 发明申请
    • SWITCH LEVEL CIRCUIT WITH DEAD TIME SELF-ADAPTING CONTROL
    • 切换电平电路与死时间自适应控制
    • US20120256671A1
    • 2012-10-11
    • US13515801
    • 2010-10-26
    • Shen XuWeifeng SunMiao YangSichao LiuYoushan JinShengli LuLongxing Shi
    • Shen XuWeifeng SunMiao YangSichao LiuYoushan JinShengli LuLongxing Shi
    • H03K3/017
    • H02M3/1588H02M2001/0048H02M2001/385Y02B70/1466Y02B70/1491
    • A switch level circuit (110) with dead time self-adapting control, which minimizes the switching loss in a switching power supply converter with synchronous rectification by changing a dead time between a high-side control transistor (10) and a low-side synchronous rectifying transistor (11). The switch level circuit (110) includes the high-side control transistor (10) and the low-side synchronous rectifying transistor (11) which are controlled to be on and off by external control signals, and a waveform with a given duty cycle is outputted at a node (LX) between the two transistors. The switch level circuit (110) also includes a control module for adjusting the dead time. The control module comprises a sampling circuit (16) for detecting the current dead time at the node (LX), an adjusting circuit (17) for buffering and converting the sampling voltage sampled by the sampling circuit (16), and a controlled delay unit (15) equipped with an external control input terminal, wherein the controlled delay unit (15) delays an external control signal and outputs the delayed signal to a controlled terminal of the low-side synchronous rectifying transistor (11) as a control signal. The switch level circuit (110) has simple structure, better performance and wide application range.
    • 一种具有死区时间自适应控制的开关电平电路(110),其通过改变高侧控制晶体管(10)和低侧同步(10)之间的死区时间而使得具有同步整流的开关电源转换器的开关损耗最小化 整流晶体管(11)。 开关电平电路(110)包括通过外部控制信号控制为接通和断开的高侧控制晶体管(10)和低侧同步整流晶体管(11),具有给定占空比的波形为 在两个晶体管之间的节点(LX)处输出。 开关电平电路(110)还包括用于调节死区时间的控制模块。 控制模块包括用于检测节点(LX)上的当前死区时间的采样电路(16),用于缓冲和转换由采样电路(16)采样的采样电压的调节电路(17),以及受控延迟单元 (15),其中所述受控延迟单元(15)延迟外部控制信号,并将延迟的信号作为控制信号输出到低侧同步整流晶体管(11)的受控端子。 开关电平电路(110)结构简单,性能好,应用范围广。