公开(公告)号：US20070253225A1

公开(公告)日：2007-11-01

申请号：US11412630

申请日：2006-04-26

申请人： Stefan Baurle ,  David Matthews ,  Roland Saint-Pierre

发明人： Stefan Baurle ,  David Matthews ,  Roland Saint-Pierre

IPC分类号： H02M3/335

CPC分类号： H02M3/07

摘要： An apparatus and method are disclosed to provide transformerless safety isolation in a power supply. One example regulated power converter includes input terminals included in a primary circuit of the power converter. Output terminals are included in a secondary circuit of the power converter. A plurality of safety capacitors including first and second safety capacitors are also included. Each of the plurality of safety capacitors includes a respective first terminal coupled to the primary circuit and a respective second terminal coupled to the secondary circuit. The plurality of safety capacitors galvanically isolates the primary circuit from the secondary circuit. A power switch is included in the primary circuit. The power switch is coupled such that switching of the power switch causes energy to transfer between the primary and secondary circuits through the plurality of safety capacitors. Substantially all of the energy that is transferred between the primary and secondary circuits is through the plurality of safety capacitors.

摘要翻译： 公开了一种在电源中提供无变压器安全隔离的装置和方法。 一个示例性调节功率转换器包括包括在功率转换器的初级电路中的输入端子。 输出端子被包括在功率转换器的次级电路中。 还包括包括第一和第二安全电容器的多个安全电容器。 多个安全电容器中的每一个包括耦合到主电路的相应的第一端子和耦合到次级电路的相应的第二端子。 多个安全电容器将初级电路与次级电路电隔离。 电源开关包含在主电路中。 功率开关被耦合，使得功率开关的切换导致能量通过多个安全电容器在初级和次级电路之间传递。 在主电路和次级电路之间传输的基本上所有的能量通过多个安全电容器。

公开(公告)号：US07990127B2

公开(公告)日：2011-08-02

申请号：US12049098

申请日：2008-03-14

申请人： Roland Saint-Pierre

发明人： Roland Saint-Pierre

IPC分类号： G05F1/565 ,  H02M1/12

CPC分类号： H02M3/156 ,  H02M1/4208 ,  Y02B70/126

摘要： A method and apparatus are disclosed for controlling a buck converter. In one aspect, an integrator is coupled to receive a current sense signal representative of a current in a switch of the buck converter and to integrate the current sense signal to produce a first input signal. A ramp generator is coupled to receive an oscillating signal having a same switching period as the switch, and to generate a piecewise linear ramp signal in response to the oscillating signal. The piecewise linear ramp signal has a delay segment of substantially zero slope followed by a plurality of segments having finite linear slopes within the switching period of the switch. A multiplier multiplies the piecewise linear ramp signal to produce a second input signal and a drive signal generator is coupled to receive a third input signal generated in response to the first and the second input signals to produce a drive signal to be coupled to control the switch to substantially regulate an output voltage of the buck converter.

摘要翻译： 公开了一种用于控制降压转换器的方法和装置。 在一个方面，积分器被耦合以接收代表降压转换器的开关中的电流的电流感测信号，并且将电流检测信号积分以产生第一输入信号。 斜坡发生器被耦合以接收具有与开关相同的开关周期的振荡信号，并且响应于振荡信号产生分段线性斜坡信号。 分段线性斜坡信号具有基本为零斜率的延迟段，随后是在开关的切换周期内具有有限线性斜率的多个段。 乘法器将分段线性斜坡信号乘以产生第二输入信号，并且驱动信号发生器被耦合以接收响应于第一和第二输入信号而产生的第三输入信号，以产生要耦合的驱动信号以控制开关 以基本上调节降压转换器的输出电压。

公开(公告)号：US20090231889A1

公开(公告)日：2009-09-17

申请号：US12049098

申请日：2008-03-14

申请人： Roland Saint-Pierre

发明人： Roland Saint-Pierre

IPC分类号： H02M1/12

CPC分类号： H02M3/156 ,  H02M1/4208 ,  Y02B70/126

摘要： A method and apparatus are disclosed for controlling a buck converter. In one aspect, an integrator is coupled to receive a current sense signal representative of a current in a switch of the buck converter and to integrate the current sense signal to produce a first input signal. A ramp generator is coupled to receive an oscillating signal having a same switching period as the switch, and to generate a piecewise linear ramp signal in response to the oscillating signal. The piecewise linear ramp signal has a delay segment of substantially zero slope followed by a plurality of segments having finite linear slopes within the switching period of the switch. A multiplier multiplies the piecewise linear ramp signal to produce a second input signal and a drive signal generator is coupled to receive a third input signal generated in response to the first and the second input signals to produce a drive signal to be coupled to control the switch to substantially regulate an output voltage of the buck converter

摘要翻译： 公开了一种用于控制降压转换器的方法和装置。 在一个方面，积分器被耦合以接收代表降压转换器的开关中的电流的电流感测信号，并且将电流检测信号积分以产生第一输入信号。 斜坡发生器被耦合以接收具有与开关相同的开关周期的振荡信号，并且响应于振荡信号产生分段线性斜坡信号。 分段线性斜坡信号具有基本为零斜率的延迟段，随后是在开关的切换周期内具有有限线性斜率的多个段。 乘法器将分段线性斜坡信号乘以产生第二输入信号，并且驱动信号发生器被耦合以接收响应于第一和第二输入信号而产生的第三输入信号，以产生要耦合的驱动信号以控制开关 以基本上调节降压转换器的输出电压