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1. 发明授权

US10284077B1 PFC controller providing reduced line current slope when in burst mode 有权
公开(公告)号：US10284077B1
公开(公告)日：2019-05-07
申请号：US15785757
申请日：2017-10-17
申请人： Texas Instruments Incorporated
发明人： Joseph Michael Leisten , Ananthakrishnan Viswanathan , Philomena Cleopha Brady , Brent Alan McDonald
IPC分类号： H02M1/42 , H02M3/157 , H02M1/36
摘要： A Power Factor Correction (PFC) controller includes an error amplifier for amplifying a difference between Vout and intended Vout to provide a power demand (Pdem) output at a compensation pin. A burst mode controller includes soft-start circuitry coupled to receive Pdem and to a drive pin which provides pulses to a control node of a power switch of a DC-DC converter during burst periods. The pulses slow ramping of line current over a first 2 to 36 switching cycles at a beginning of bursts when energizing the inductor to reduce a line current slope as compared to without ramping up, and for slowing ramping down of line current over the last 2 to 36 switching cycles to reduce a line current slope when de-energizing the inductor as compared to a line current without ramping down. The PFC controller does not utilize zero-crossings of the line voltage for burst period synchronization.

2. 发明授权

US11621630B2 Soft-start for switching converter controller with hybrid hysteretic control (HHC) 有权
公开(公告)号：US11621630B2
公开(公告)日：2023-04-04
申请号：US17389018
申请日：2021-07-29
申请人： Texas Instruments Incorporated
发明人： Salvatore Giombanco , Brent Alan McDonald
IPC分类号： H02M1/36 , H02M3/335 , H02M1/32
摘要： A switching converter controller includes: a control loop adapted to be coupled to an output terminal of a power stage; and a hybrid hysteretic control (HHC) circuit coupled to the control loop. The HHC circuit includes a resonant capacitor voltage (Vcr) node adapted to be coupled to a resonant capacitor (Cr) of the power stage, where the Vcr node sums a sense voltage for Cr with a frequency compensation ramp. The HHC circuit also includes a soft-start controller coupled to the Vcr node. The soft-start controller includes a clamp circuit coupled to the Vcr node.

3. 发明申请

US20220416676A1 Method of Operating Isolated Resonant Converter with Synchronous Rectifier 有权
公开(公告)号：US20220416676A1
公开(公告)日：2022-12-29
申请号：US17362875
申请日：2021-06-29
申请人： Texas Instruments Incorporated
发明人： Ramkumar Sivakumar , Brent Alan McDonald , Yalong Li
IPC分类号： H02M3/335 , H02M1/00 , H02M1/08
摘要： A method for operating a resonant converter in a burst mode includes determining the polarity of a transformer voltage across a secondary winding of a transformer. The method includes determining, from the polarity of the transformer voltage, on/off states of first and second transistors coupled to the secondary winding of the transformer. If the transformer voltage has a first polarity, the method includes commencing a burst period by alternately turning on/off high-side and low-side transistors electrically connected to a primary winding of the transformer.

4. 发明授权

US09584006B2 System and method for optimizing constant power, constant current and constant voltage operation 有权
标题翻译：优化恒功率，恒流和恒压运行的系统和方法
公开(公告)号：US09584006B2
公开(公告)日：2017-02-28
申请号：US14550475
申请日：2014-11-21
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Brent Alan McDonald , John C Vogt
IPC分类号： H02M1/32 , H02M1/00
CPC分类号： H02M1/32 , H02M2001/0012 , H02M2001/0025
摘要： A circuit includes a device monitoring component, a voltage error component, a current error component, a power error component, an error selecting component, a filter instruction component and a filter. The device monitoring component monitors load voltage and load current, and outputs a device state signal. The voltage error component outputs a voltage error signal. The current error component outputs a current error signal. The power error component outputs a power error signal. The error selecting component outputs a selected error signal. The filter instruction component outputs a filter instruction based on the device state signal. The filter outputs a modification signal to modify operation of a device so as to modify one of the load voltage, the load current and the load power.
摘要翻译：电路包括设备监视组件，电压误差分量，电流误差分量，功率误差分量，误差选择分量，滤波器指令分量和滤波器。设备监控组件监控负载电压和负载电流，并输出器件状态信号。电压误差分量输出电压误差信号。当前的误差分量输出电流误差信号。功率误差分量输出功率误差信号。误差选择分量输出选择的误差信号。滤波器指令分量根据器件状态信号输出滤波指令。滤波器输出修改信号以修改设备的操作，以便修改负载电压，负载电流和负载功率之一。

5. 发明申请

US20160149483A1 SYSTEM AND METHOD FOR OPTIMIZING CONSTANT POWER, CONSTANT CURRENT AND CONSTANT VOLTAGE OPERATION 有权
标题翻译：用于优化恒定功率，恒定电流和恒定电压运行的系统和方法
公开(公告)号：US20160149483A1
公开(公告)日：2016-05-26
申请号：US14550475
申请日：2014-11-21
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Brent Alan McDonald , John C. Vogt
IPC分类号： H02M3/04
CPC分类号： H02M1/32 , H02M2001/0012 , H02M2001/0025
摘要： A circuit includes a device monitoring component, a voltage error component, a current error component, a power error component, an error selecting component, a filter instruction component and a filter. The device monitoring component monitors load voltage and load current, and outputs a device state signal. The voltage error component outputs a voltage error signal. The current error component outputs a current error signal. The power error component outputs a power error signal. The error selecting component outputs a selected error signal. The filter instruction component outputs a filter instruction based on the device state signal. The filter outputs a modification signal to modify operation of a device so as to modify one of the load voltage, the load current and the load power.
摘要翻译：电路包括设备监视组件，电压误差分量，电流误差分量，功率误差分量，误差选择分量，滤波器指令分量和滤波器。设备监控组件监控负载电压和负载电流，并输出器件状态信号。电压误差分量输出电压误差信号。当前的误差分量输出电流误差信号。功率误差分量输出功率误差信号。误差选择分量输出选择的误差信号。滤波器指令分量根据器件状态信号输出滤波指令。滤波器输出修改信号以修改设备的操作，以便修改负载电压，负载电流和负载功率之一。

6. 发明授权

US09257913B1 LLC converter and loss of inductive mode detection circuit 有权
标题翻译： LLC转换器和感应模式检测电路的损耗
公开(公告)号：US09257913B1
公开(公告)日：2016-02-09
申请号：US14479279
申请日：2014-09-06
申请人： Texas Instruments Incorporated
发明人： Brent Alan McDonald
IPC分类号： H02M3/335 , H02M3/337
CPC分类号： H02M3/33569 , H02M3/3376 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： Methods, control apparatus and series resonant or LLC power conversion systems are presented in which a resonant series circuit current is compared with a threshold during a portion of a modulation switching cycle following turn on of a corresponding switching device and one or more indications or remedial actions are undertaken to modify modulation control of a switching circuit in response to a determination that the resonant current is below the threshold to facilitate our promote zero voltage switching or near-zero voltage switching and provide current reversal protection.
摘要翻译：提出了方法，控制装置和串联谐振或LLC功率转换系统，其中在相应的开关装置接通之后的调制切换周期的一部分期间将谐振串联电路电流与阈值进行比较，以及一个或多个指示或补救动作用于响应于确定谐振电流低于阈值来修改开关电路的调制控制，以促进我们促进零电压开关或近零电压切换并提供电流反向保护。

7. 发明授权

US11196351B2 Burst mode operation for a resonant converter 有权
公开(公告)号：US11196351B2
公开(公告)日：2021-12-07
申请号：US16727187
申请日：2019-12-26
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Yalong Li , Maxim James Franke , John C. Vogt , Brent Alan McDonald
IPC分类号： H02M3/156 , H02M3/337 , H02M3/158 , H02M3/335 , H02M1/00
摘要： A circuit includes a first driver, a second driver, and a burst mode control circuit coupled to the first and second drivers. The burst mode control circuit is configured to implement a burst mode operation having a burst soft-on portion and a burst portion. During the soft-on portion of the burst mode operation, the burst mode control circuit is configured to cause the first and second drivers to produce a first set of pulses of increasing pulse width. During the burst portion of the burst mode operation, the burst mode control circuit is configured to cause the first and second drivers to produce a second set of pulses of a constant pulse width.

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