公开(公告)号：US09024600B2

公开(公告)日：2015-05-05

申请号：US13948404

申请日：2013-07-23

Applicant: Texas Instruments Incorporated

Inventor： Stefan Wlodzimierz Wiktor ,  Joseph Maurice Khayat ,  Brian Thomas Lynch

IPC: H02M3/158 ,  H02M3/156 ,  H02M3/157

CPC classification number: H02M3/156 ,  H02M3/157 ,  H02M3/1584

Abstract: Pulse width modulation controller apparatus and techniques are presented for balancing output currents of DC-DC converter stages in a multi-stage DC-DC conversion system in which a reference current is provided according to an input voltage and the value of a connected resistor, and a correction current output signal is generated that represents the difference between an average converter stage load current and the local load current, with the on-time of the PWM output signal being generated by charging a capacitance using a charging current obtained by offsetting the reference current output signal with the correction current output signal.

Abstract translation: 提出了用于平衡多级DC-DC转换系统中的DC-DC转换器级的输出电流的脉冲宽度调制控制器装置和技术，其中根据输入电压和连接的电阻器的值提供参考电流，以及 产生校正电流输出信号，其表示平均转换器级负载电流和局部负载电流之间的差异，其中通过使用通过偏置参考电流获得的充电电流对电容器进行充电来产生PWM输出信号的导通时间 输出信号与校正电流输出信号。

公开(公告)号：US20140070784A1

公开(公告)日：2014-03-13

申请号：US13947140

申请日：2013-07-22

Applicant: Texas Instruments Incorporated

Inventor： Brian Thomas Lynch ,  Neeraj Keskar

IPC: G05F1/46

CPC classification number: G05F1/46 ,  H02M3/156 ,  H02M2003/1566

Abstract: Analog pulse width modulation (PWM) control circuits and techniques are presented for improving output voltage load transient response in controlling DC to DC conversion systems in which a transient detector circuit restarts a PWM carrier ramp waveform to initiate asynchronous injection of a pulse between the regular periodic PWM pulses in a fixed frequency pulse stream to mitigate the effect of output inductor energy depletion on output voltage.

Abstract translation: 提出了模拟脉冲宽度调制（PWM）控制电路和技术，用于改善控制DC至DC转换系统中的输出电压负载瞬态响应，其中瞬态检测器电路重新启动PWM载波斜坡波形，以启动定期周期性的脉冲之间的异步注入 PWM脉冲在固定频率脉冲流中，以减轻输出电感能量耗尽对输出电压的影响。

公开(公告)号：US11770067B2

公开(公告)日：2023-09-26

申请号：US18170666

申请日：2023-02-17

Applicant: Texas Instruments Incorporated

Inventor： Stefan Wlodzimierz Wiktor ,  Brian Thomas Lynch

IPC: H02M1/36 ,  H02M3/158 ,  H02M1/00 ,  H02M3/157 ,  H02M3/156

CPC classification number: H02M1/36 ,  H02M1/0025 ,  H02M3/158 ,  H02M3/156 ,  H02M3/157

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to start converter into a pre-biased voltage. The disclosed methods, apparatus, systems and articles of manufacture provide an apparatus comprising: an error amplifier including a feedback network and a differential difference amplifier (DDA), the DDA coupled to a power converter, a voltage generator, and the feedback network coupled to the third input of the DDA, the fourth input of the DDA, and the output of the DDA; a multiplexer coupled to the voltage generator, the second input of the DDA, and the first input of the DDA; a first switch coupled in parallel to the feedback network; a second switch coupled to a delay cell and an oscillator; and a trigger including an output, the trigger coupled to the voltage generator, the power converter, and the output of the trigger coupled to the multiplexer, first switch, and the second switch.

公开(公告)号：US10892746B2

公开(公告)日：2021-01-12

申请号：US16544061

申请日：2019-08-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Brian Thomas Lynch ,  Stefan Wlodzimierz Wiktor

IPC: H03K7/08 ,  H03K3/017 ,  H03M1/12 ,  H02M3/156 ,  H03K3/353

Abstract: A system includes an input voltage supply. The system also includes a switching converter coupled to the input voltage supply and configured to provide an output voltage based on a switch on-time. The system also includes a switch on-time controller for the switching converter. The switch on-time controller includes an analog-to-digital converter (ADC) and a delay line coupled to the ADC. The switch on-time controller also includes a delay line modulator coupled to the delay line and configured to determine an amount of times the delay line is used to determine the switch on-time.

公开(公告)号：US20200228012A1

公开(公告)日：2020-07-16

申请号：US16712706

申请日：2019-12-12

Applicant: Texas Instruments Incorporated

Inventor： Brian Thomas Lynch ,  Stefan Wlodzimierz Wiktor ,  Daniel Curtis Goldner

IPC: H02M3/157 ,  H02M3/158

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed that facilitate multiple modes of converter operation. An example apparatus includes a comparator configured to provide a first trigger signal to initiate a first pulse width modulated signal in a constant-on-time mode for a power converter, an oscillator configured to provide a second trigger signal to initiate a second pulse width modulated signal in a fixed frequency mode for the power converter, and a selector configured to receive a select signal, the selector configured to output the first trigger signal to a pulse width modulated signal generator to initiate the first pulse width modulated signal based on a first state of the select signal, and output the second trigger signal to the pulse width modulated signal generator to initiate the second pulse width modulated signal based on a second state of the select signal.

公开(公告)号：US09306548B1

公开(公告)日：2016-04-05

申请号：US14580314

申请日：2014-12-23

Applicant: Texas Instruments Incorporated

Inventor： Stefan Wlodzimierz Wiktor ,  Brian Thomas Lynch

IPC: H03L7/00 ,  H03K3/017 ,  H03K3/353

CPC classification number: H03K7/08

Abstract: A pulse generator generates a square-wave pulsed signal that has a variable pulse width. The pulse width, which is defined by the delay through a delay line, varies in response to variations in an input voltage, as well as in response to phase differences between a reference clock signal and a trigger signal.

Abstract translation: 脉冲发生器产生具有可变脉冲宽度的方波脉冲信号。 通过延迟线的延迟定义的脉冲宽度响应于输入电压的变化以及响应于参考时钟信号和触发信号之间的相位差而变化。

公开(公告)号：US08810294B2

公开(公告)日：2014-08-19

申请号：US14051346

申请日：2013-10-10

Applicant: Texas Instruments Incorporated

Inventor： Brian Thomas Lynch ,  Joseph Maurice Khayat ,  Stefan Wlodzimierz Wiktor

IPC: G01P3/66 ,  G05F1/40

CPC classification number: H03K5/086

Abstract: A control circuit configured to control a switching power supply including a ramp generator configured to generate a triangular waveform. A comparator is configured to generate a series of pulse width modulated (PWM) pulses at a first frequency and to regulate the switching power supply. The ramp generator includes a capacitor, a charging current source configured to provide a charging current to charge the capacitor, and a discharging current source configured to provide a discharging current to discharge the capacitor. The ramp generator also includes a closed loop current balancing current source configured to balance the currents from the charging and discharging current sources to establish a substantially zero direct current (DC) bias across the capacitor. The controller also includes a multi-phase configuration to provide a stackable multi-channel architecture.

Abstract translation: 一种控制电路，被配置为控制包括被配置为产生三角形波形的斜坡发生器的开关电源。 比较器被配置为以第一频率产生一系列脉冲宽度调制（PWM）脉冲并且调节开关电源。 斜坡发生器包括电容器，被配置为提供充电电流以对电容器充电的充电电流源以及被​​配置为提供放电电流以对电容器放电的放电电流源。 斜坡发生器还包括闭环电流平衡电流源，其被配置为平衡来自充电和放电电流源的电流，以在电容器两端建立基本为零的直流（DC）偏置。 控制器还包括多相配置，以提供可堆叠的多通道架构。

公开(公告)号：US11552555B2

公开(公告)日：2023-01-10

申请号：US17139470

申请日：2020-12-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Indumini Ranmuthu ,  Brian Thomas Lynch

IPC: H02M1/44 ,  H02M3/158

Abstract: In some examples, a circuit includes a state machine. The state machine is configured to operate in a buck state in which the state machine is configured to control a power converter to operate in a buck mode of operation at a first frequency. The state machine is configured to determine that a switch time of the power converter has decreased to within a threshold amount of a minimum switch time for the power converter. The state machine is configured to, responsive to the switch time of the power converter having decreased to within the threshold amount of the minimum switch time for the power converter, transition from the buck state to a reduced frequency buck state in which the state machine is configured to control the power converter to operate in the buck mode of operation at a second frequency that is less than the first frequency.

公开(公告)号：US11205965B2

公开(公告)日：2021-12-21

申请号：US16714140

申请日：2019-12-13

Applicant: Texas Instruments Incorporated

Inventor： Stefan Wlodzimierz Wiktor ,  Brian Thomas Lynch ,  Luis Gonzales

IPC: H02M3/156 ,  H02M3/158 ,  H02M3/335 ,  H02M1/00

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to calibrate a power converter. An example apparatus includes a comparator including a first input terminal, a second input terminal, and an output terminal, the first input terminal of the comparator configured to be coupled to a filter to receive a filtered feedback signal, the second input terminal of the comparator configured to receive a first voltage signal, and the output terminal of the comparator coupled to a node, an oscillator including an output terminal, and a voltage stepper including a first input terminal, a second input terminal, and an output terminal, the first input terminal of the voltage stepper configured to receive a second voltage signal, the second input terminal of the voltage stepper coupled to the output terminal of the oscillator, and the output terminal of the voltage stepper configured to be coupled to an error amplifier.

公开(公告)号：US20210126524A1

公开(公告)日：2021-04-29

申请号：US17143418

申请日：2021-01-07

Applicant: Texas Instruments Incorporated

Inventor： Stefan Wlodzimierz Wiktor ,  Brian Thomas Lynch

IPC: H02M1/36 ,  H02M3/157 ,  H02M3/158 ,  H02M3/156

Abstract: Methods, apparatus, systems and articles of manufacture are disclosed to start converter into a pre-biased voltage. The disclosed methods, apparatus, systems and articles of manufacture provide an apparatus comprising: an error amplifier including a feedback network and a differential difference amplifier (DDA), the DDA coupled to a power converter, a voltage generator, and the feedback network coupled to the third input of the DDA, the fourth input of the DDA, and the output of the DDA; a multiplexer coupled to the voltage generator, the second input of the DDA, and the first input of the DDA; a first switch coupled in parallel to the feedback network; a second switch coupled to a delay cell and an oscillator; and a trigger including an output, the trigger coupled to the voltage generator, the power converter, and the output of the trigger coupled to the multiplexer, first switch, and the second switch.