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公开(公告)号：US20170317597A1
公开(公告)日：2017-11-02
申请号：US15653145
申请日：2017-07-18
CPC分类号： H02M3/33507 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491 , Y02P80/112
摘要： A circuit includes a timer circuit configured to generate a first control signal defining a first time period and a second control signal defining a second time period. A controller is configured to control a high-side and a low-side transistor of a half-bridge circuit in response to the first and second control signals only during a first switching cycle of the half-bridge circuit. The half-bridge circuit includes a bootstrap capacitor coupled to a node between the high-side and low-side transistors. The controller turns on the low-side transistor for the first time period during the first switching cycle and configured turns off the low-side and the high-side transistors for the second time period during the first switching cycle.
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2.发明授权公开(公告)号：US12009743B2
公开(公告)日：2024-06-11
申请号：US17695603
申请日：2022-03-15
CPC分类号： H02M1/36 , H02M1/0006 , H02M1/0025 , H02M1/32 , H02M3/33523
摘要： A method of operating an electronic converter is provided in which a switching activity of a switching stage of the electronic converter is active or inactive based on a control signal, and the method includes operating the electronic converter, alternatively, in a first or a second mode. In the first mode, the status signal is initially asserted and is de-asserted in response to an amplitude of the input sensing signal failing to reach a first reference threshold value. In the second mode, the status signal is initially de-asserted and an auxiliary power supply signal is periodically varied with a variation period. After a time interval equal to the variation period, a comparison signal is asserted in response to an amplitude of the sensed signal reaching a second reference threshold value. The status signal is asserted based on conditions of the comparison signal and the periodically varying auxiliary power supply signal.
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3.发明申请DEVICE FOR AVOIDING HARD SWITCHING IN RESONANT CONVERTER AND RELATED METHOD 审中-公开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：US20160013722A1
公开(公告)日：2016-01-14
申请号：US14860570
申请日：2015-09-21
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：US09094006B2
公开(公告)日：2015-07-28
申请号：US13888180
申请日：2013-05-06
CPC分类号： H03K17/082 , H02M1/32 , H02M1/36 , H02M1/38 , H02M3/3382 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A control device of a switching circuit of a resonant apparatus is described. The switching circuit comprises at least one half-bridge having a high-side transistor and a low-side transistor connected between an input voltage and a reference voltage; the resonant apparatus comprises a resonant load. The control device is configured to determine the on time period and the off time period of the transistors alternatively and a dead time of both the transistors so that a periodic square-wave voltage is applied to the resonant load. The control device comprises a detector adapted to detect the current sign flowing through the resonant load and a correction circuit configured to extend the current operating time period of said two transistors in response to at least the current sign detected from the detection means.
摘要翻译： 描述谐振装置的开关电路的控制装置。 开关电路包括具有连接在输入电压和参考电压之间的高侧晶体管和低侧晶体管的至少一个半桥; 谐振装置包括谐振负载。 控制装置被配置为确定晶体管的导通时间段和关闭时间段以及两个晶体管的死区时间，使得周期性方波电压被施加到谐振负载。 控制装置包括检测器，其适于检测流过谐振负载的电流符号，以及校正电路，其被配置为响应于至少从检测装置检测到的电流符号来扩展所述两个晶体管的当前工作时间段。
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5.发明授权公开(公告)号：US12113446B2
公开(公告)日：2024-10-08
申请号：US17698786
申请日：2022-03-18
摘要： A control circuit for controlling a switching stage of an electronic converter includes a first terminal configured to provide a drive signal and a second terminal configured to receive a first feedback signal. A third terminal receives a second feedback signal and a driver circuit provides the drive signal as a function of a PWM signal. A PWM signal generator circuit generates the PWM signal as a function of the first feedback signal, a reference threshold and the second feedback signal or a slope compensation signal. The control circuit is configured to sense an input signal, provide a first compensation parameter, and provide a first compensating signal as a function of a power of the input sensing signal.
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公开(公告)号：US09735686B2
公开(公告)日：2017-08-15
申请号：US14860570
申请日：2015-09-21
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.
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公开(公告)号：US20130293267A1
公开(公告)日：2013-11-07
申请号：US13888180
申请日：2013-05-06
IPC分类号： H03K17/082
CPC分类号： H03K17/082 , H02M1/32 , H02M1/36 , H02M1/38 , H02M3/3382 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A control device of a switching circuit of a resonant apparatus is described. The switching circuit comprises at least one half-bridge having a high-side transistor and a low-side transistor connected between an input voltage and a reference voltage; the resonant apparatus comprises a resonant load. The control device is configured to determine the on time period and the off time period of the transistors alternatively and a dead time of both the transistors so that a periodic square-wave voltage is applied to the resonant load. The control device comprises a detector adapted to detect the current sign flowing through the resonant load and a correction circuit configured to extend the current operating time period of said two transistors in response to at least the current sign detected from the detection means.
摘要翻译： 描述谐振装置的开关电路的控制装置。 开关电路包括具有连接在输入电压和参考电压之间的高侧晶体管和低侧晶体管的至少一个半桥; 谐振装置包括谐振负载。 控制装置被配置为确定晶体管的导通时间段和关闭时间段以及两个晶体管的死区时间，使得周期性方波电压被施加到谐振负载。 控制装置包括检测器，其适于检测流过谐振负载的电流符号，以及校正电路，其被配置为响应于至少从检测装置检测到的电流符号来扩展所述两个晶体管的当前工作时间段。
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公开(公告)号：US10250145B2
公开(公告)日：2019-04-02
申请号：US15653145
申请日：2017-07-18
摘要： A circuit includes a timer circuit configured to generate a first control signal defining a first time period and a second control signal defining a second time period. A controller is configured to control a high-side and a low-side transistor of a half-bridge circuit in response to the first and second control signals only during a first switching cycle of the half-bridge circuit. The half-bridge circuit includes a bootstrap capacitor coupled to a node between the high-side and low-side transistors. The controller turns on the low-side transistor for the first time period during the first switching cycle and configured turns off the low-side and the high-side transistors for the second time period during the first switching cycle.
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