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    • 5. 发明申请
    • METHOD FOR REGULATING A VOLTAGE AND CIRCUIT THEREFOR
    • 用于调节其电压和电路的方法
    • US20090189573A1
    • 2009-07-30
    • US11572460
    • 2006-03-02
    • Joel TurchiChristophe Basso
    • Joel TurchiChristophe Basso
    • G05F1/10
    • H02H7/1216
    • A voltage regulator having an overload protection circuit and a method for protecting against an output voltage being less than a predetermined level. The voltage regulator has an overload protection circuit coupled between a feedback network and a regulation section. A power factor correction circuit is connected to the regulation section. An output voltage from the power factor correction circuit is fed back to the feedback network, which transmits a portion of the output voltage to the overload protection circuit. If the output voltage is less than the predetermined voltage level, a transconductance amplifier generates a current that sets an overload flag. Setting the overload flag initiates a delay timer. If the delay exceeds a predetermined amount of time, the overload protection circuit shuts down the voltage regulator.
    • 具有过载保护电路的电压调节器和用于防止小于预定电平的输出电压的方法。 电压调节器具有耦合在反馈网络和调节部分之间的过载保护电路。 功率因数校正电路连接到调节部分。 来自功率因数校正电路的输出电压被反馈到反馈网络,反馈网络将输出电压的一部分传送到过载保护电路。 如果输出电压小于预定电压电平,则跨导放大器产生设定过载标志的电流。 设置过载标志启动延迟定时器。 如果延迟超过预定的时间,则过载保护电路关闭稳压器。
    • 8. 发明授权
    • Method for regulating a voltage and circuit therefor
    • 用于调节电压和电路的方法
    • US07977929B2
    • 2011-07-12
    • US11572456
    • 2006-03-02
    • Joel TurchiChristophe Basso
    • Joel TurchiChristophe Basso
    • G05F1/00
    • H02M1/4225H02M1/32Y02B70/126Y02P80/112
    • A voltage regulator (10) having an undervoltage protection circuit 11 and a method for protecting against an output voltage out being less than a predetermined level. The voltage regulator has an undershoot limitation circuit (11) coupled between a feedback network (30) and a regulation section (42). A power factor correction circuit (46) is connected to the regulation section. An output voltage out from the power factor correction circuit (46) is fed back to the feedback network (30), which transmits a portion of the output voltage to the undershoot limitation circuit (11). If the output voltage is greater than the predetermined voltage level, a switching circuit portion (34) of the undershoot limitation circuit (11) transmits a normal control signal to the regulation circuit (42). If the output voltage is less than the predetermined voltage level, the switching circuit portion transmits an enhanced control signal to the regulation circuit. The enhanced control signal quickly brings the output voltage up to at least the minimum desired level.
    • 具有欠压保护电路11的电压调节器(10)和防止输出电压输出小于预定电平的方法。 电压调节器具有耦合在反馈网络(30)和调节部分(42)之间的下冲限制电路(11)。 功率因数校正电路(46)与调节部连接。 从功率因数校正电路(46)输出的输出电压被反馈到反馈网络(30),反馈网络将输出电压的一部分传送到下冲限制电路(11)。 如果输出电压大于预定电压电平,则下冲限制电路(11)的开关电路部分(34)将正常控制信号发送到调节电路(42)。 如果输出电压小于预定电压电平,则开关电路部分向调节电路发送增强的控制信号。 增强的控制信号快速使输出电压达到至少最小期望水平。
    • 9. 发明授权
    • Method for regulating a voltage and circuit therefor
    • 用于调节电压和电路的方法
    • US07812584B2
    • 2010-10-12
    • US11575632
    • 2006-04-18
    • Joel TurchiChristophe Basso
    • Joel TurchiChristophe Basso
    • G05F1/46G05F1/56G05F1/565G05F1/569G05F1/575
    • H02M1/4225H02M2001/0025Y02B70/126
    • A regulator circuit and a method for regulating an output voltage. The regulator circuit includes an undervoltage protection stage capable of operating in a plurality of operating modes. In one mode, the undervoltage protection stage compensates for a low undervoltage appearing in the output voltage and in another mode it compensates for a large undervoltage appearing in the output voltage. When the output voltage has a low undervoltage, a portion of the current from a current source is routed to a feedback network to balance the input voltages of the undervoltage protection stage and to place the voltage regulator in a steady state operating mode. When the output voltage has a large undervoltage, the undervoltage protection stage turns on a current sourcing transistor that cooperates with the current from the current source to quickly charge a compensation capacitor and increase the power appearing at the output of the voltage regulator.
    • 调节器电路和调节输出电压的方法。 调节器电路包括能够以多种操作模式操作的欠压保护级。 在一种模式中,欠压保护级补偿输出电压中出现的低欠压,而在另一种模式下,补偿输出电压中出现的大的欠压。 当输出电压具有低欠压时,来自电流源的电流的一部分被路由到反馈网络以平衡欠压保护级的输入电压并将稳压器置于稳态操作模式。 当输出电压具有较大的欠压时,欠压保护级接通电流源晶体管,其与来自电流源的电流配合,从而对补偿电容器进行快速充电,并增加出现在电压调节器输出端的功率。
    • 10. 发明授权
    • Power factor correction circuit and method of varying switching frequency
    • 功率因数校正电路及开关频率变化的方法
    • US07123494B2
    • 2006-10-17
    • US10512768
    • 2003-05-06
    • Joel Turchi
    • Joel Turchi
    • G05F1/70
    • G05F1/70H02M1/4225Y02B70/126
    • A power factor correction (PFC) circuit (10) includes a pulse width modulator (31) operating in response to a clock signal (CLK) for switching a coil current (ICOIL) over a charging period (TCHG) to correct a power factor at a node (32). The coil current discharges over a discharging period (TDSCHG) to develop an output voltage (VOUT) at an output (30). An oscillator (35) generates the clock signal to have a clock period (TCLK) longer than the sum of the charging and discharging periods, thereby operating in a discontinuous mode, and has an input (39) for sensing the input signal to modify the clock period.
    • 功率因数校正(PFC)电路(10)包括脉冲宽度调制器(31),其响应于用于在充电周期(TCHG)上切换线圈电流(ICOIL)的时钟信号(CLK)而工作,以校正功率因数 节点(32)。 线圈电流在放电期间(TDSCHG)放电,以在输出端(30)产生输出电压(VOUT)。 振荡器(35)产生时钟信号以具有比充电和放电周期的总和长的时钟周期(TCLK),从而以不连续模式操作,并且具有用于感测输入信号以修改 时钟周期。