公开(公告)号：US20190356212A1

公开(公告)日：2019-11-21

申请号：US16529227

申请日：2019-08-01

Applicant: Texas Instruments Incorporated

Inventor： Robert Alan Neidorff ,  Joseph Maurice Khayat

IPC: H02M1/08 ,  H03K17/16 ,  H02M3/158 ,  H02M3/156

Abstract: Methods and apparatus to increase efficiency of a power converter using a bias voltage on a low side drive gate are disclosed. An example power converter includes an inductor; a transistor coupled to the inductor; and a driver coupled to a gate of the transistor, the driver to apply (A) a first voltage to the gate to enable the transistor, (B) a second voltage to the gate to disable the transistor, and (C) a third voltage to the gate during a transition between applying the first voltage and the second voltage, the third voltage being between the first voltage and the second voltage.

公开(公告)号：US09369042B1

公开(公告)日：2016-06-14

申请号：US14581681

申请日：2014-12-23

Applicant: Texas Instruments Incorporated

Inventor： Joseph Maurice Khayat

IPC: G05F1/00 ,  H02M3/158

CPC classification number: H02M1/08 ,  H02M3/1584 ,  H02M2001/0009

Abstract: A multiphase DC-to-DC synchronous power converter, which has a number of converter channels that generate a corresponding number of current sense signals, blanks the current sense signals in a first converter channel for periods of time that correspond with the actions of the transistors in a second converter channel, where the actions result in noise spikes across the converter that falsely interfere with current sensing in the first converter channel.

Abstract translation: 具有产生相应数量的电流感测信号的多个转换器通道的多相DC-DC同步电力转换器将第一转换器通道中的电流检测信号空白，以对应于晶体管的动作 在第二转换器通道中，其中的动作导致转换器上的噪声尖峰误差地干扰第一转换器通道中的电流感测。

公开(公告)号：US20140097881A1

公开(公告)日：2014-04-10

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: H03K5/08

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：US20140097818A1

公开(公告)日：2014-04-10

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: H02M3/156 ,  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。