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公开(公告)号:US5122726A
公开(公告)日:1992-06-16
申请号:US606406
申请日:1990-10-31
CPC分类号: G05F1/59 , H02H7/1213 , H02J1/10 , H02J1/102 , H02J1/108
摘要: Overvoltage and component failure protection for redundant current-mode controlled power supplies operating in parallel takes a supply off line when the supply drives the output bus to an overvoltage condition, without removing properly functioning supplies from the bus. The supply is also taken off line when either the error amplifier or the PWM fails.
摘要翻译: 当电源将输出总线驱动到过电压状态时,过载和组件故障保护用于并联工作的冗余电流模式受控电源,将电源断开,而不会从总线中清除正常工作的电源。 当误差放大器或PWM失败时,电源也会脱机。
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公开(公告)号:US5130561A
公开(公告)日:1992-07-14
申请号:US574974
申请日:1990-08-29
CPC分类号: H02M1/14 , H02M3/285 , H02M2001/008 , Y10T307/406
摘要: Two pulse-width modulated power supplies are synchronized to operate at 180.degree. of phase shift to reduce the peak amplitude of the instantaneous current drawn from the DC input bus. The circuit includes means for disabling the synchronization upon detection of an undervoltage fault condition on the output of either supply. This feature allows frequency programming techniques to be used to provide foldback current limiting for either supply without affecting the operation of the other supply.
摘要翻译: 两个脉冲宽度调制电源同步工作在180°的相移,以减少从直流输入总线吸取的瞬时电流的峰值幅度。 该电路包括用于在检测到任一电源的输出上的欠电压故障状况时禁止同步的装置。 该功能允许频率编程技术用于为任一电源提供折返电流限制,而不会影响另一个电源的操作。
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