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1.发明授权公开(公告)号：US07049794B2
公开(公告)日：2006-05-23
申请号：US10986622
申请日：2004-11-12
申请人： Kent Wong , Arthur B. Odell , Stefan Bäurle
发明人： Kent Wong , Arthur B. Odell , Stefan Bäurle
IPC分类号： G05F1/652
CPC分类号： H02M1/32 , H02M3/156 , H02M2001/0009 , H02M2001/0025
摘要： A reduced cost voltage regulation circuit for switched mode power supplies. In one embodiment, a voltage regulation circuit includes a current sense circuit having a current sense terminal to conduct a current to be sensed by the current sense circuit. A voltage difference between the current sense terminal and a voltage reference terminal is substantially fixed when the current to be sensed by the current sense circuit is substantially equal to a first current sense threshold. The voltage regulation circuit also includes a first impedance coupled between the current sense terminal and the voltage reference terminal to provide a second current sense threshold. The second current sense threshold is equal to a sum of the first current sense threshold and a current to flow through the first impedance. The voltage regulation circuit further includes a second impedance coupled between the current sense terminal and an input terminal. The input terminal has a voltage threshold relative to the voltage reference terminal that is different from a voltage at the current sense terminal by an amount that is a product of the second impedance and the second current threshold.
摘要翻译： 用于开关式电源的降低成本的电压调节电路。 在一个实施例中，电压调节电路包括具有电流检测端子的电流检测电路，以传导由电流感测电路感测的电流。 当电流检测电路要感测的电流基本上等于第一电流检测阈值时，电流检测端子与电压参考端子之间的电压差基本上是固定的。 电压调节电路还包括耦合在电流检测端子和电压参考端子之间的第一阻抗以提供第二电流检测阈值。 第二电流检测阈值等于第一电流检测阈值和流过第一阻抗的电流之和。 电压调节电路还包括耦合在电流感测端子和输入端子之间的第二阻抗。 输入端子具有相对于电压参考端子的电压阈值，该电压阈值与电流检测端子处的电压不同于第二阻抗和第二电流阈值的乘积量。
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2.发明授权公开(公告)号：US07368894B2
公开(公告)日：2008-05-06
申请号：US11336728
申请日：2006-01-20
申请人： Kent Wong , Arthur B. Odell , Stefan Bäurle
发明人： Kent Wong , Arthur B. Odell , Stefan Bäurle
CPC分类号： H02M1/32 , H02M3/156 , H02M2001/0009 , H02M2001/0025
摘要： A reduced cost voltage regulation circuit for switched mode power supplies. In one example, a current sense circuit includes a current sense terminal of a voltage regulation circuit. A voltage difference between the current sense terminal and a voltage reference terminal of the voltage regulation circuit is substantially fixed when a first current to be sensed by the current sense circuit at the current sense terminal is substantially equal to a first current sense threshold. A power transistor is also included and is coupled to the current sense circuit and coupled between a power supply input terminal of the voltage regulation circuit and a power supply output terminal of the voltage regulation circuit. The power transistor is coupled to be switched in response to the first current to be sensed by the current sense circuit at the current sense terminal to control a transfer of energy from the input of the power supply to the output of the power supply to regulate an output voltage of the power supply.
摘要翻译： 用于开关式电源的降低成本的电压调节电路。 在一个示例中，电流检测电路包括电压调节电路的电流检测端子。 当电流感测端子处的电流感测电路要感测的第一电流基本上等于第一电流检测阈值时，电流检测端子和电压调节电路的电压参考端子之间的电压差基本上是固定的。 还包括功率晶体管，并且耦合到电流感测电路并且耦合在电压调节电路的电源输入端子和电压调节电路的电源输出端子之间。 功率晶体管被耦合以响应于由电流感测端子处的电流感测电路感测的第一电流而被切换，以控制从电源的输入到电源的输出的能量传递，以调节 电源的输出电压。
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公开(公告)号：US08194422B2
公开(公告)日：2012-06-05
申请号：US12899405
申请日：2010-10-06
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： In one aspect, a power supply regulator includes a feedback terminal, a node, a control circuit, a first current source, and a second current source. The node is coupled to the feedback terminal to provide a feedback state signal in response to a feedback current through the feedback terminal. The feedback state signal has feedback states that represent an output of the power supply. The control circuit is to be coupled to a power switch and to receive the feedback state signal to regulate the output of the power supply. The first current source is coupled to the node to provide a first current to the node. The second current source is coupled to the node to selectively remove a second current from the node to modulate the feedback current and to alter the feedback state of the feedback state signal.
摘要翻译： 一方面，电源调节器包括反馈端子，节点，控制电路，第一电流源和第二电流源。 该节点耦合到反馈端以响应于通过反馈端的反馈电流来提供反馈状态信号。 反馈状态信号具有代表电源输出的反馈状态。 控制电路将耦合到电源开关并接收反馈状态信号以调节电源的输出。 第一电流源耦合到节点以向节点提供第一电流。 第二电流源耦合到节点以选择性地从节点去除第二电流以调制反馈电流并改变反馈状态信号的反馈状态。
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公开(公告)号：US07830678B2
公开(公告)日：2010-11-09
申请号：US12796592
申请日：2010-06-08
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： Various techniques directed to the digital control of a switching regulator are disclosed. In one aspect, a power supply regulator includes a compare circuit to be coupled to receive a feedback signal representative of an output level of a power supply. This causes a feedback state signal to be generated having a first feedback state that represents an output level of the power supply that is above a threshold level and a second feedback state that represents an output level of the power supply that is below the threshold level. An adjustment circuit is coupled to the compare circuit to adjust the feedback state signal in response to at least one of adjusting the threshold level or adjusting the feedback signal. The adjustment to the feedback state signal tends to cause the feedback state signal to revert from a state at the time of adjustment to a state immediately preceding the adjustment. A control circuit is to be coupled to a power switch and is to be coupled to receive an oscillating signal and the feedback state signal. The control circuit is to control switching of the power switch in response to the oscillating signal and the feedback state signal to regulate the output level of the power supply.
摘要翻译： 公开了针对开关调节器的数字控制的各种技术。 一方面，电源调节器包括一个比较电路，被耦合以接收代表电源的输出电平的反馈信号。 这导致产生反馈状态信号，其具有表示高于阈值电平的电源的输出电平的第一反馈状态和表示低于阈值电平的电源的输出电平的第二反馈状态。 响应于调整阈值电平或调整反馈信号中的至少一个，调整电路耦合到比较电路以调整反馈状态信号。 对反馈状态信号的调整倾向于使得反馈状态信号从调整时的状态恢复到紧接调整之前的状态。 控制电路将被耦合到电源开关并且被耦合以接收振荡信号和反馈状态信号。 控制电路是根据振荡信号和反馈状态信号来控制电源开关的开关，以调节电源的输出电平。
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公开(公告)号：US08654547B2
公开(公告)日：2014-02-18
申请号：US13466780
申请日：2012-05-08
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： In one aspect, a power supply includes an energy transfer element, a switch, a feedback circuit, a comparator, a state machine, and a control circuit. The feedback circuit generates a feedback signal representative of an output level of the power supply. The comparator provides a feedback state signal having a first feedback state that represents the output level of the power supply being above a threshold level and a second feedback state that represents the output level being below the threshold level. The state machine selectively modulates a first signal in response to the feedback state signal, where the first signal is the feedback signal or the threshold value signal. The control circuit is coupled to control switching of the switch to regulate the output level of the power supply in response to the feedback state signal.
摘要翻译： 一方面，电源包括能量传递元件，开关，反馈电路，比较器，状态机和控制电路。 反馈电路产生表示电源的输出电平的反馈信号。 比较器提供具有表示电源的输出电平高于阈值电平的第一反馈状态和表示输出电平低于阈值电平的第二反馈状态的反馈状态信号。 状态机响应于反馈状态信号选择性地调制第一信号，其中第一信号是反馈信号或阈值信号。 控制电路被耦合以响应于反馈状态信号来控制开关的开关以调节电源的输出电平。
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公开(公告)号：US07233504B2
公开(公告)日：2007-06-19
申请号：US11213296
申请日：2005-08-26
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： Various techniques directed to the digital control of a switching regulator are disclosed. In one aspect, a method for regulating an output level at a power converter output includes receiving a feedback signal representative of the output level at the power converter output. In response to a state of the power converter, at least one of the feedback signal or a threshold level is adjusted. A feedback state signal is generated having a first feedback state that represents that the output level is above the threshold level and a second feedback state that represents that the output level is below the threshold level. A duty cycle signal that cycles is generated. In response to a control signal, energy from a power converter input is enabled or disabled to flow to the power converter output. The control signal is responsive to the duty cycle signal and to a change between the first and second feedback states. The control signal is also responsive to a change between the first and second feedback states.
摘要翻译： 公开了针对开关调节器的数字控制的各种技术。 一方面，一种用于调节功率转换器输出端的输出电平的方法包括接收表示功率转换器输出端的输出电平的反馈信号。 响应于功率转换器的状态，调整反馈信号或阈值电平中的至少一个。 生成具有表示输出电平高于阈值电平的第一反馈状态和表示输出电平低于阈值电平的第二反馈状态的反馈状态信号。 产生周期的占空比信号。 响应于控制信号，来自功率转换器输入的能量被启用或禁用以流向功率转换器输出。 控制信号响应于占空比信号和第一和第二反馈状态之间的变化。 控制信号还响应于第一和第二反馈状态之间的变化。
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公开(公告)号：US20120218788A1
公开(公告)日：2012-08-30
申请号：US13466780
申请日：2012-05-08
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： In one aspect, a power supply includes an energy transfer element, a switch, a feedback circuit, a comparator, a state machine, and a control circuit. The feedback circuit generates a feedback signal representative of an output level of the power supply. The comparator provides a feedback state signal having a first feedback state that represents the output level of the power supply being above a threshold level and a second feedback state that represents the output level being below the threshold level. The state machine selectively modulates a first signal in response to the feedback state signal, where the first signal is the feedback signal or the threshold value signal. The control circuit is coupled to control switching of the switch to regulate the output level of the power supply in response to the feedback state signal.
摘要翻译： 一方面，电源包括能量传递元件，开关，反馈电路，比较器，状态机和控制电路。 反馈电路产生表示电源的输出电平的反馈信号。 比较器提供具有表示电源的输出电平高于阈值电平的第一反馈状态和表示输出电平低于阈值电平的第二反馈状态的反馈状态信号。 状态机响应于反馈状态信号选择性地调制第一信号，其中第一信号是反馈信号或阈值信号。 控制电路被耦合以响应于反馈状态信号来控制开关的开关以调节电源的输出电平。
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公开(公告)号：US20110019441A1
公开(公告)日：2011-01-27
申请号：US12899405
申请日：2010-10-06
IPC分类号： H02M3/335
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： In one aspect, a power supply regulator includes a feedback terminal, a node, a control circuit, a first current source, and a second current source. The node is coupled to the feedback terminal to provide a feedback state signal in response to a feedback current through the feedback terminal. The feedback state signal has feedback states that represent an output of the power supply. The control circuit is to be coupled to a power switch and to receive the feedback state signal to regulate the output of the power supply. The first current source is coupled to the node to provide a first current to the node. The second current source is coupled to the node to selectively remove a second current from the node to modulate the feedback current and to alter the feedback state of the feedback state signal.
摘要翻译： 一方面，电源调节器包括反馈端子，节点，控制电路，第一电流源和第二电流源。 该节点耦合到反馈端以响应于通过反馈端的反馈电流来提供反馈状态信号。 反馈状态信号具有代表电源输出的反馈状态。 控制电路将耦合到电源开关并接收反馈状态信号以调节电源的输出。 第一电流源耦合到节点以向节点提供第一电流。 第二电流源耦合到节点以选择性地从节点去除第二电流以调制反馈电流并改变反馈状态信号的反馈状态。
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公开(公告)号：US20100246222A1
公开(公告)日：2010-09-30
申请号：US12796592
申请日：2010-06-08
IPC分类号： H02M7/06
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： Various techniques directed to the digital control of a switching regulator are disclosed. In one aspect, a power supply regulator includes a compare circuit to be coupled to receive a feedback signal representative of an output level of a power supply. This causes a feedback state signal to be generated having a first feedback state that represents an output level of the power supply that is above a threshold level and a second feedback state that represents an output level of the power supply that is below the threshold level. An adjustment circuit is coupled to the compare circuit to adjust the feedback state signal in response to at least one of adjusting the threshold level or adjusting the feedback signal. The adjustment to the feedback state signal tends to cause the feedback state signal to revert from a state at the time of adjustment to a state immediately preceding the adjustment. A control circuit is to be coupled to a power switch and is to be coupled to receive an oscillating signal and the feedback state signal. The control circuit is to control switching of the power switch in response to the oscillating signal and the feedback state signal to regulate the output level of the power supply.
摘要翻译： 公开了针对开关调节器的数字控制的各种技术。 一方面，电源调节器包括一个比较电路，被耦合以接收代表电源的输出电平的反馈信号。 这导致产生反馈状态信号，其具有表示高于阈值电平的电源的输出电平的第一反馈状态和表示低于阈值电平的电源的输出电平的第二反馈状态。 响应于调整阈值电平或调整反馈信号中的至少一个，调整电路耦合到比较电路以调整反馈状态信号。 对反馈状态信号的调整倾向于使得反馈状态信号从调整时的状态恢复到紧接调整之前的状态。 控制电路将被耦合到电源开关并且被耦合以接收振荡信号和反馈状态信号。 控制电路是根据振荡信号和反馈状态信号来控制电源开关的开关，以调节电源的输出电平。
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10.发明授权Modulation of a feedback signal used in a digital control of a switching regulator 有权在开关调节器的数字控制中使用的反馈信号的调制公开(公告)号：US07755917B2
公开(公告)日：2010-07-13
申请号：US11804173
申请日：2007-05-15
CPC分类号： H02M3/33515 , H02M1/08 , H02M2001/0009 , H02M2001/0025
摘要： Digital control of a switching regulator in one aspect includes a compare circuit to be coupled to receive a feedback signal representative of an output level of a power supply. A feedback state signal is generated having a first feedback state and a second feedback state. An adjustment circuit is coupled to the compare circuit to adjust the feedback state signal in response to at least one of adjusting the threshold level or adjusting the feedback signal. The adjusted feedback state signal causes the feedback state signal to revert from a state at the time of adjustment to a state immediately preceding the adjustment. A control circuit is to be coupled to a power switch and is to be coupled to receive an oscillating signal and the feedback state signal.
摘要翻译： 开关稳压器的一个方面的数字控制包括一个比较电路，被耦合以接收代表电源的输出电平的反馈信号。 产生具有第一反馈状态和第二反馈状态的反馈状态信号。 响应于调整阈值电平或调整反馈信号中的至少一个，调整电路耦合到比较电路以调整反馈状态信号。 调整后的反馈状态信号使得反馈状态信号从调整时的状态恢复到调整之前的状态。 控制电路将被耦合到电源开关并且被耦合以接收振荡信号和反馈状态信号。
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