公开(公告)号：US20140177303A1

公开(公告)日：2014-06-26

申请号：US14015349

申请日：2013-08-30

Applicant: Texas Instruments Incorporated

Inventor： Ulrich B. Goerke

IPC: H02M7/217

CPC classification number: H02M3/33507 ,  H02M2001/0025 ,  H02M2001/0048

Abstract: A power converter (such as a battery charger) includes a cable configured to deliver a source voltage and current to a load, where the cable is anticipated to drop some voltage as the load current increases. The power converter also includes a regulator having a feedback-adjusting transistor configured to gradually compensate for the dropped cable voltage as the load current increases. The transistor has a gate capacitance and a resistance forming an integrator configured to filter a volt-second product of an output waveshape of the converter to derive an average voltage correlated to the load current as the load current increases. The regulator is configured to increase a gate voltage of the transistor through a threshold region of the transistor and gradually turn the transistor on. The transistor is configured to apply an adjusting resistance coupled to a feedback sensing node of the regulator to increase the source voltage to compensate for the cable voltage drop and improve the load voltage regulation.

Abstract translation: 功率转换器（例如电池充电器）包括配置为将电源电压和电流传送到负载的电缆，其中预期电缆随负载电流增加而下降一些电压。 功率转换器还包括具有反馈调节晶体管的调节器，该反馈调节晶体管被配置为随着负载电流增加而逐渐补偿掉落的电缆电压。 晶体管具有栅极电容和形成积分器的电阻，该积分器被配置为过滤转换器的输出波形的伏秒乘积以导出与负载电流增加相关的负载电流的平均电压。 调节器被配置为通过晶体管的阈值区域增加晶体管的栅极电压，并逐渐打开晶体管。 晶体管被配置为施加耦合到调节器的反馈感测节点的调节电阻以增加源电压以补偿电缆电压降并改善负载电压调节。

公开(公告)号：US20160056724A1

公开(公告)日：2016-02-25

申请号：US14465586

申请日：2014-08-21

Applicant: Texas Instruments Incorporated

Inventor： Richard L. Valley ,  Ulrich B. Goerke

IPC: H02M3/335 ,  H02M1/08

CPC classification number: H02M3/33523 ,  H02M2001/0032 ,  H02M2001/0064 ,  Y02B70/16

Abstract: A switching power supply includes a transformer having a primary side and a secondary side. The primary side is coupled to a switch for controlling current flow through the primary side and the secondary side generates an output voltage. A controller controls switching of the switch to generate a first power level on the secondary side of the transformer when the power supply is in a stand-by mode and a second power level when the power supply is in an active mode. A monitor samples the output voltage, generates a reference voltage, and generates a wake up signal in response the output voltage being less than the reference voltage. The controller controls the switch in response to the wake up signal to generate the first power level.

Abstract translation: 开关电源包括具有初级侧和次级侧的变压器。 初级侧耦合到用于控制通过初级侧的电流的开关，并且次级侧产生输出电压。 当电源处于待机模式时，控制器控制开关的开关，以在变压器的次级侧产生第一功率电平，并且当电源处于活动模式时控制第二功率电平。 监视器对输出电压进行采样，产生参考电压，并响应输出电压小于参考电压产生唤醒信号。 控制器响应于唤醒信号控制开关以产生第一功率电平。

公开(公告)号：US09331582B2

公开(公告)日：2016-05-03

申请号：US14015349

申请日：2013-08-30

Applicant: Texas Instruments Incorporated

Inventor： Ulrich B. Goerke

IPC: H02M7/217 ,  H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33507 ,  H02M2001/0025 ,  H02M2001/0048

Abstract: A power converter (such as a battery charger) includes a cable configured to deliver a source voltage and current to a load, where the cable is anticipated to drop some voltage as the load current increases. The power converter also includes a regulator having a feedback-adjusting transistor configured to gradually compensate for the dropped cable voltage as the load current increases. The transistor has a gate capacitance and a resistance forming an integrator configured to filter a volt-second product of an output waveshape of the converter to derive an average voltage correlated to the load current as the load current increases. The regulator is configured to increase a gate voltage of the transistor through a threshold region of the transistor and gradually turn the transistor on. The transistor is configured to apply an adjusting resistance coupled to a feedback sensing node of the regulator to increase the source voltage to compensate for the cable voltage drop and improve the load voltage regulation.

Abstract translation: 功率转换器（例如电池充电器）包括配置为将电源电压和电流传送到负载的电缆，其中预期电缆随负载电流增加而下降一些电压。 功率转换器还包括具有反馈调节晶体管的调节器，该反馈调节晶体管被配置为随着负载电流增加而逐渐补偿掉落的电缆电压。 晶体管具有栅极电容和形成积分器的电阻，该积分器被配置为过滤转换器的输出波形的伏秒乘积以导出与负载电流增加相关的负载电流的平均电压。 调节器被配置为通过晶体管的阈值区域增加晶体管的栅极电压，并逐渐打开晶体管。 晶体管被配置为施加耦合到调节器的反馈感测节点的调节电阻以增加源电压以补偿电缆电压降并改善负载电压调节。

公开(公告)号：US20150029762A1

公开(公告)日：2015-01-29

申请号：US14335849

申请日：2014-07-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bing Lu ,  Ulrich B. Goerke

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/335 ,  H02M3/33507 ,  H02M3/33546 ,  H02M3/33592 ,  H02M2001/0025

Abstract: On the secondary side of a flyback switching power converter, a compensation diode and a voltage divider with an averaging circuit generate an output current-compensated reference voltage that is proportional to converter output current. The current-compensated reference voltage is added to a regulation feedback controller reference voltage, which in turn adjusts the negative feedback signal to the PWM regulation controller on the primary side in proportion to the converter output current draw. The net effect is to increase the converter output voltage set-point in proportion to the converter output current draw as compensation for a voltage drop in a cable connecting the converter to a powered device. More precisely-regulated voltage levels may be delivered to an input of the powered device as a result.

Abstract translation: 在反激式开关电源转换器的次级侧，补偿二极管和具有平均电路的分压器产生与转换器输出电流成比例的输出电流补偿参考电压。 电流补偿参考电压被加到调节反馈控制器参考电压，该参考电压反过来将负反馈信号调整到初级侧的PWM调节控制器，与转换器输出电流消耗成比例。 最终的效果是将转换器输出电压设定值与转换器输出电流的比例成正比，作为将转换器连接到有源设备的电缆中的电压降的补偿。 因此，更精确调节的电压电平可能被传送到被供电装置的输入端。

公开(公告)号：US09595875B2

公开(公告)日：2017-03-14

申请号：US14335849

申请日：2014-07-18

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Bing Lu ,  Ulrich B. Goerke

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33523 ,  H02M3/335 ,  H02M3/33507 ,  H02M3/33546 ,  H02M3/33592 ,  H02M2001/0025

Abstract: On the secondary side of a flyback switching power converter, a compensation diode and a voltage divider with an averaging circuit generate an output current-compensated reference voltage that is proportional to converter output current. The current-compensated reference voltage is added to a regulation feedback controller reference voltage, which in turn adjusts the negative feedback signal to the PWM regulation controller on the primary side in proportion to the converter output current draw. The net effect is to increase the converter output voltage set-point in proportion to the converter output current draw as compensation for a voltage drop in a cable connecting the converter to a powered device. More precisely-regulated voltage levels may be delivered to an input of the powered device as a result.

Abstract translation: 在反激式开关电源转换器的次级侧，补偿二极管和具有平均电路的分压器产生与转换器输出电流成比例的输出电流补偿参考电压。 电流补偿参考电压被加到调节反馈控制器参考电压，该参考电压反过来将负反馈信号调整到初级侧的PWM调节控制器，与转换器输出电流消耗成比例。 最终的效果是将转换器输出电压设定值与转换器输出电流的比例成正比，作为将转换器连接到有源设备的电缆中的电压降的补偿。 因此，更精确调节的电压电平可能被传送到被供电装置的输入端。