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    • 1. 发明授权
    • Switching regulator device and method with adaptive frequency foldback
    • 具有自适应频率折返的开关调节器和方法
    • US08723501B2
    • 2014-05-13
    • US13604387
    • 2012-09-05
    • Benjamin M. Rice
    • Benjamin M. Rice
    • H02M3/156H02M3/157
    • H03K5/08
    • A control circuit for a switching regulator includes a clock circuit, a pulsewidth modulation (PWM) circuit, and a reduction monitor. The clock circuit provides a clock signal at a variable frequency. The PWM circuit produces a drive signal of at least a first predetermined duration once every period of the clock signal. The reduction monitor controls the clock circuit to reduce the variable frequency in response to a sense signal that indicates that at least one of a voltage and a current is outside a limit during the first predetermined duration of said drive signal.
    • 用于开关调节器的控制电路包括时钟电路,脉宽调制(PWM)电路和还原监视器。 时钟电路以可变频率提供时钟信号。 PWM电路在时钟信号的每个周期产生至少第一预定持续时间的驱动信号。 减速监视器控制时钟电路,以响应于在所述驱动信号的第一预定持续时间期间指示电压和电流中的至少一个超出极限的感测信号来减小可变频率。
    • 3. 发明授权
    • Series inverter for capacitor charging
    • 串联逆变器用于电容充电
    • US4497018A
    • 1985-01-29
    • US491983
    • 1983-05-05
    • Benjamin M. Rice
    • Benjamin M. Rice
    • H02M3/315H02M7/523H02M7/515
    • H02M3/3155H02M7/5236
    • A series inverter, high voltage capacitor charging circuit includes a current sensor for sensing the current through the load circuit. The sensed current is used to vary the gating frequency of SCRs and to preclude firing of an SCR pair until another SCR pair is in a stable off condition. The gating of each SCR pair is delayed by an amount of time determined by a control capacitor charging circuit. That charging circuit is inhibited as long as one of the SCRs is conducting and once the load voltage has reached a predetermined level. The time constant of that charging circuit is longer if insufficient reverse bias is applied to an SCR for quick turn-off of the SCR. The current sensing thresholds of common base transistors depend on whether forward or reflective current is being sensed. A series capacitor in the load circuit is discharged prior to a first cycle of current flow from the dc supply.
    • 串联逆变器,高压电容器充电电路包括用于感测通过负载电路的电流的电流传感器。 所感测的电流用于改变SCR的门控频率并阻止SCR对的点火,直到另一个SCR对处于稳定的关闭状态。 每个SCR对的门控被延迟由控制电容器充电电路确定的时间量。 只要其中一个SCR正在导通,并且一旦负载电压达到预定电平,该充电电路被禁止。 如果对SCR的快速关断对SCR施加不足的反向偏压,则该充电电路的时间常数较长。 公共基极晶体管的电流感测阈值取决于是正在感测正向还是反射电流。 在来自直流电源的电流的第一个周期之前,负载电路中的串联电容器被放电。
    • 4. 发明授权
    • Method for inhibiting thermal run-away
    • 抑制热失控的方法
    • US08710821B2
    • 2014-04-29
    • US12837382
    • 2010-07-15
    • Ole P. MoyerPaul Jay HarrimanBenjamin M. RiceChristopher J. GassMichael A. Stapleton
    • Ole P. MoyerPaul Jay HarrimanBenjamin M. RiceChristopher J. GassMichael A. Stapleton
    • H02M3/156
    • H02M3/1584H02M1/32
    • A method for mitigating aliasing effects in a single phase power converter and mitigating aliasing effects and inhibiting thermal run-away in a multi-phase power converter at varying load transition rates. A single phase or multi-phase power converter having an on-time is provided and the frequency of the power converter is adjusted so that a load step period and the on time of the single phase power converter are in a temporal relationship. Alternatively, a load step rate is inhibited from locking onto a phase current of the single phase power converter by suspending an oscillator signal. In accordance with another alternative, a load step rate is inhibited from locking onto a phase current of the single phase power converter by suspending an oscillator signal and dithering an input signal to the oscillator.
    • 一种用于减轻单相功率转换器中的混叠效应的方法,并减轻混叠效应,并以不同的负载转换速率抑制多相功率转换器中的热耗散。 提供具有导通时间的单相或多相功率转换器,并且调整功率转换器的频率,使得单相功率转换器的负载阶跃周期和导通时间处于时间关系。 或者,通过暂停振荡器信号来禁止负载步进速率锁定到单相功率转换器的相电流。 根据另一替代方案,通过暂停振荡器信号并将输入信号抖动到振荡器,禁止负载步进速率锁定到单相功率转换器的相电流。
    • 5. 发明授权
    • Switching regulator device and method with adaptive frequency foldback
    • 具有自适应频率折返的开关调节器和方法
    • US08294446B2
    • 2012-10-23
    • US12856376
    • 2010-08-13
    • Benjamin M. Rice
    • Benjamin M. Rice
    • G05F1/575G05F5/00
    • H03K5/08
    • A device and method for regulating the output of a power circuit is provided, which in one embodiment includes a pulsewidth modulation (PWM) circuit that produces pulses each having a period of at least a minimum duration, a comparator circuit that produces a control signal, a timer initiated at the output of each pulse and operable to expire no later than expiration of twice the minimum pulsewidth duration, and wherein the PWM circuit is operable to reduce the frequency of outputted pulses in response to receiving the control signal having a first state at expiration of the first timer initiated at the output of a first pulse.
    • 提供了一种用于调节电源电路的输出的装置和方法,其在一个实施例中包括产生每个具有至少最小持续时间的周期的脉冲宽度调制(PWM)电路,产生控制信号的比较器电路, 在每个脉冲的输出处启动的定时器,其可操作以使其不晚于最小脉冲宽度持续时间的两倍,并且其中PWM电路可操作以响应于接收到具有第一状态的控制信号而减小输出脉冲的频率 在第一脉冲的输出处启动的第一定时器的期满。