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公开(公告)号：US08804377B2
公开(公告)日：2014-08-12
申请号：US12978841
申请日：2010-12-27
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , Y02B70/1433
摘要： A control device for a resonant converter, the control device including a first circuit to integrate at least one signal indicating a half wave of a current circulating in a primary winding of a transformer; the first circuit is structured to generate at least a control signal of the switching circuit depending on the integrated signal. The control device includes a second circuit to impose the equality of a switching-on time period of the first and second switches.
摘要翻译： 一种用于谐振转换器的控制装置，所述控制装置包括：第一电路，用于积分表示在变压器的初级绕组中循环的电流的半波的至少一个信号; 第一电路被构造成根据积分信号产生至少一个开关电路的控制信号。 控制装置包括施加第一和第二开关的接通时间段相等的第二电路。
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公开(公告)号：US20100259954A1
公开(公告)日：2010-10-14
申请号：US12789113
申请日：2010-05-27
CPC分类号： H02M1/36 , H02M3/3376 , H02M2001/0048 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A resonant dc-dc converter converts dc input voltage to a dc output voltage. The converter includes switching, switching driving, conversion, and disabling circuits. The switching circuit receives the input voltage and generates a square wave voltage oscillating between the input voltage and a low value, at a frequency with a duty cycle. The switching driving circuit drives the switching circuit and includes a timing circuit for setting the frequency and the duty cycle. The timing circuit sets the value of the duty cycle to about 50% when the converter operates in steady state. The conversion circuit generates the output voltage from the square wave voltage based on the frequency and the duty cycle. The disabling circuit temporarily halts the timing circuit after a power on in such a way to temporarily vary the duty cycle of the square wave voltage during a period of the square wave voltage.
摘要翻译： 谐振式dc-dc转换器将直流输入电压转换为直流输出电压。 该转换器包括开关，开关驱动，转换和禁用电路。 开关电路接收输入电压，并以占空比的频率产生在输入电压和低值之间振荡的方波电压。 开关驱动电路驱动开关电路，并且包括用于设定频率和占空比的定时电路。 当转换器工作在稳态时，定时电路将占空比的值设置为约50％。 转换电路根据频率和占空比从方波电压产生输出电压。 禁止电路在上电之后暂时停止定时电路，以便在方波电压的周期期间临时改变方波电压的占空比。
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公开(公告)号：US20110157927A1
公开(公告)日：2011-06-30
申请号：US12978841
申请日：2010-12-27
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , Y02B70/1433
摘要： A control device for a resonant converter, the control device including a first circuit to integrate at least one signal indicating a half wave of a current circulating in a primary winding of a transformer; the first circuit is structured to generate at least a control signal of the switching circuit depending on the integrated signal. The control device includes a second circuit to impose the equality of a switching-on time period of the first and second switches.
摘要翻译： 一种用于谐振转换器的控制装置，所述控制装置包括：第一电路，用于积分表示在变压器的初级绕组中循环的电流的半波的至少一个信号; 第一电路被构造成根据积分信号产生至少一个开关电路的控制信号。 控制装置包括施加第一和第二开关的接通时间段相等的第二电路。
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4.发明授权公开(公告)号：US09143046B2
公开(公告)日：2015-09-22
申请号：US13416656
申请日：2012-03-09
CPC分类号： H02M3/33507 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A control device that controls a switching circuit and minimizes hard switching that occurs in the switching circuit of a half-bridge resonant converter having a high-side transistor and a low-side transistor. The control device is configured to turn the high-side and low-side transistor on and, so that a square-wave voltage is applied to a primary winding of a transformer. The controller starts the switching of the half-bridge converter by first turning on the low-side transistor for a first time period useful for pre-charging a bootstrap capacitor couplable to the middle point of the half-bridge, and then turning the low-side transistor and the high-side transistor off for a second time period that immediately follows and is longer than the first time period.
摘要翻译： 控制装置，其控制切换电路，并且使具有高侧晶体管和低侧晶体管的半桥谐振变换器的开关电路中发生的硬开关最小化。 控制装置被配置为使高侧和低侧晶体管导通，并且使得方波电压被施加到变压器的初级绕组。 控制器开始半桥转换器的切换，首先将低侧晶体管接通第一时间段，这对于预充电到可以连接到半桥的中点的自举电容器进行预充电， 并且高侧晶体管关闭紧随着第二时间段并且比第一时间段长。
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公开(公告)号：US08391026B2
公开(公告)日：2013-03-05
申请号：US12789113
申请日：2010-05-27
IPC分类号： H02M3/335
CPC分类号： H02M1/36 , H02M3/3376 , H02M2001/0048 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A resonant dc-dc converter converts dc input voltage to a dc output voltage. The converter includes switching, switching driving, conversion, and disabling circuits. The switching circuit receives the input voltage and generates a square wave voltage oscillating between the input voltage and a low value, at a frequency with a duty cycle. The switching driving circuit drives the switching circuit and includes a timing circuit for setting the frequency and the duty cycle. The timing circuit sets the value of the duty cycle to about 50% when the converter operates in steady state. The conversion circuit generates the output voltage from the square wave voltage based on the frequency and the duty cycle. The disabling circuit temporarily halts the timing circuit after a power on in such a way to temporarily vary the duty cycle of the square wave voltage during a period of the square wave voltage.
摘要翻译： 谐振式dc-dc转换器将直流输入电压转换为直流输出电压。 该转换器包括开关，开关驱动，转换和禁用电路。 开关电路接收输入电压，并以占空比的频率产生在输入电压和低值之间振荡的方波电压。 开关驱动电路驱动开关电路，并且包括用于设定频率和占空比的定时电路。 当转换器工作在稳态时，定时电路将占空比的值设置为约50％。 转换电路根据频率和占空比从方波电压产生输出电压。 禁止电路在上电之后暂时停止定时电路，以便在方波电压的周期期间临时改变方波电压的占空比。
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6.发明申请DEVICE FOR AVOIDING HARD SWITCHING IN RESONANT CONVERTER AND RELATED METHOD 有权用于避免谐波转换器中硬切换的装置及相关方法公开(公告)号：US20120230059A1
公开(公告)日：2012-09-13
申请号：US13416656
申请日：2012-03-09
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A control device controls a switching circuit for a converter. The switching circuit comprises a half-bridge having a high-side transistor and a low-side transistor. The control device comprises a controller configured to control turning on and turning off said two transistors, so that a square-wave voltage is applied to the transformer primary. The controller is configured to start switching the half-bridge by turning on the low-side transistor. The control device comprises a first timer configure to initially turn on the low-side transistor for a duration given by a first time period useful for pre-charging a bootstrap capacitor couplable to the middle point of the half-bridge, and a second timer configured to keep the low-side transistor and the high-side transistor turned off for a second time period immediately following the first time period and having a longer duration than the first time period.
摘要翻译： 控制装置控制转换器的开关电路。 开关电路包括具有高侧晶体管和低侧晶体管的半桥。 控制装置包括控制器，其被配置为控制导通和截止所述两个晶体管，使得方波电压被施加到变压器初级。 控制器配置为通过打开低端晶体管来开始切换半桥。 控制装置包括第一定时器，其配置为在第一时间周期内最初使低侧晶体管导通，该持续时间可用于对可耦合到半桥的中点的自举电容器进行预充电，以及第二定时器配置 为了保持低侧晶体管和高侧晶体管在第一时间段之后紧接第二时间段并且具有比第一时间段更长的持续时间。
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公开(公告)号：US20110157920A1
公开(公告)日：2011-06-30
申请号：US12979631
申请日：2010-12-28
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , Y02B70/1433
摘要： A control device for a resonant converter includes a first circuit structured to rectify a signal indicating the current circulating in the primary winding, a second circuit adapted to integrate at least the rectified signal and structured to generate at least a control signal of the switching circuit according to the integrated signal, and a third circuit adapted to send a reset command to the second circuit so as to inhibit the operation over a time period between the instant when the integrated signal reaches or exceeds a first signal and the instant of the next zero crossing of the signal, indicating the current circulating in the primary winding.
摘要翻译： 一种用于谐振转换器的控制装置包括：第一电路，被构造成对指示在初级绕组中循环的电流进行整流的信号;第二电路，适于至少整合经整流的信号并被构造为至少产生开关电路的控制信号， 以及第三电路，其适于向第二电路发送复位命令，以便在集成信号达到或超过第一信号的瞬间和下一个过零的时刻之间的时间段内禁止操作 的信号，表示在初级绕组中循环的电流。
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8.发明申请公开(公告)号：US20110075452A1
公开(公告)日：2011-03-31
申请号：US12892592
申请日：2010-09-28
IPC分类号： H02H7/122
CPC分类号： H02M3/337 , H02M1/083 , H02M1/38 , H02M2001/0058 , Y02B70/1491
摘要： A detecting device detects the midpoint voltage of a half bridge circuit of transistors. The circuit comprises a bootstrap capacitor having one terminal connected to the midpoint node of the half bridge circuit and another terminal connected to a supply circuit. The device comprises a further capacitor connected between a second terminal of the bootstrap capacitor and circuit means adapted to form a low impedance node for a current signal circulating in said further capacitor during the transitions from the low value to the high value and from the high value to the low value of the midpoint voltage. The device comprises a detector to detect said current signal circulating in said further capacitor and to output at least a first signal indicating the transitions from the low value to the high value or from the high value to the low value according to said current signal.
摘要翻译： 检测装置检测晶体管的半桥电路的中点电压。 该电路包括自举电容器，其具有连接到半桥电路的中点节点的一个端子和连接到电源电路的另一终端。 该装置包括连接在自举电容器的第二端子和电路装置之间的另外的电容器，该电路装置适于在从低值转换到高电平值期间形成用于在所述另外的电容器中循环的电流信号的低阻抗节点 到中点电压的低值。 该装置包括检测器，用于检测在所述另外的电容器中循环的所述电流信号，并且根据所述电流信号，输出指示从低值到高电平或从高电平到低电平的转换的至少第一信号。
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公开(公告)号：US08699240B2
公开(公告)日：2014-04-15
申请号：US12979631
申请日：2010-12-28
IPC分类号： H02M3/335
CPC分类号： H02M3/3376 , Y02B70/1433
摘要： A control device for a resonant converter includes a first circuit structured to rectify a signal indicating the current circulating in the primary winding, a second circuit adapted to integrate at least the rectified signal and structured to generate at least a control signal of the switching circuit according to the integrated signal, and a third circuit adapted to send a reset command to the second circuit so as to inhibit the operation over a time period between the instant when the integrated signal reaches or exceeds a first signal and the instant of the next zero crossing of the signal, indicating the current circulating in the primary winding.
摘要翻译： 一种用于谐振转换器的控制装置包括：第一电路，被构造成对指示在初级绕组中循环的电流进行整流的信号;第二电路，适于至少整合经整流的信号并被构造为至少产生开关电路的控制信号， 以及第三电路，其适于向第二电路发送复位命令，以便在集成信号达到或超过第一信号的瞬间和下一个过零的时刻之间的时间段内禁止操作 的信号，表示在初级绕组中循环的电流。
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10.发明授权公开(公告)号：US08599590B2
公开(公告)日：2013-12-03
申请号：US12892592
申请日：2010-09-28
CPC分类号： H02M3/337 , H02M1/083 , H02M1/38 , H02M2001/0058 , Y02B70/1491
摘要： A detecting device detects the midpoint voltage of a half bridge circuit of transistors. The circuit comprises a bootstrap capacitor having one terminal connected to the midpoint node of the half bridge circuit and another terminal connected to a supply circuit. The device comprises a further capacitor connected between a second terminal of the bootstrap capacitor and circuit means adapted to form a low impedance node for a current signal circulating in said further capacitor during the transitions from the low value to the high value and from the high value to the low value of the midpoint voltage. The device comprises a detector to detect said current signal circulating in said further capacitor and to output at least a first signal indicating the transitions from the low value to the high value or from the high value to the low value according to said current signal.
摘要翻译： 检测装置检测晶体管的半桥电路的中点电压。 该电路包括自举电容器，其具有连接到半桥电路的中点节点的一个端子和连接到电源电路的另一终端。 该装置包括连接在自举电容器的第二端子和电路装置之间的另外的电容器，该电路装置适于在从低值转换到高电平值期间形成用于在所述另外的电容器中循环的电流信号的低阻抗节点 到中点电压的低值。 该装置包括检测器，用于检测在所述另外的电容器中循环的所述电流信号，并且根据所述电流信号，输出指示从低值到高电平或从高电平到低电平的转换的至少第一信号。
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