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    • 2. 发明申请
    • SOFT START CIRCUIT AND METHOD FOR DC-DC VOLTAGE REGULATOR
    • DC-DC电压调节器的软启动电路和方法
    • US20160091909A1
    • 2016-03-31
    • US14563453
    • 2014-12-08
    • Analog Devices, Inc.
    • Piotr Olejarz
    • G05F1/56H02M1/36
    • G05F1/56G05F1/10G05F1/42
    • A voltage regulator is provided comprising: a pass transistor that includes a first node coupled to receive an input voltage and a second node coupled to provide a regulated voltage and a control node; an amplifier circuit coupled to produce a control voltage on a control line that is coupled to control a voltage at the control node of the pass transistor, based at least in part upon a reference voltage and the regulated voltage; a switch configured to transition between a first switch state in which the switch couples the control line to a turn-off voltage having a value to turn off the pass transistor and a second switch state in which the switch decouples the control line from the turn-off voltage; and a switch control circuit configured to maintain the switch in the first switch state during a first time interval while the input voltage ramps up and to transition the switch to the second switch state after the first time interval.
    • 提供一种电压调节器,包括:通过晶体管,其包括耦合以接收输入电压的第一节点和耦合以提供调节电压的第二节点和控制节点; 放大器电路,其被耦合以至少部分地基于参考电压和所述调节电压在控制线上产生控制电压,所述控制线被耦合以控制所述传输晶体管的控制节点处的电压; 开关,被配置为在开关将控制线耦合到具有关闭所述通过晶体管的值的关断电压的第一开关状态和所述开关将所述控制线与所述转向开关断开的第二开关状态之间转换, 关断电压; 以及开关控制电路,被配置为在所述输入电压上升期间的第一时间间隔期间将所述开关保持在所述第一开关状态,并且在所述第一时间间隔之后将所述开关转换到所述第二开关状态。