| 摘要 |
<p>A voltage regulator (100) comprises a current bridge formed by a first current path (160) for conveying a first current (I1) and a second current path (162) for conveying a second current (I2), the first and second current paths (160, 162) coupling a current mirror (130) to respective first and second voltage-to-current converters (150, 155). The current mirror (130) is arranged to control the second current (I2) dependent on the first current (I1). The first voltage-to-current converter (150) is arranged to control the first current (I1) dependent on one of a reference voltage (V REF ) and a feedback voltage (V FB ) derived from an output voltage (V OUT ) of the voltage regulator (100), and the second voltage-to-current converter (155) is arranged to control the second current (12) dependent on the other of the feedback voltage (V FB ) and the reference voltage (V REF ). The voltage-to-current conversion provided by the first voltage-to-current converter (150) is independent of the voltage-to-current conversion provided by the second voltage-to-current converter (155). An output transistor stage (110) is coupled to the second current path (162) for controlling the output voltage (V OUT ) dependent on the voltage in the second current path (162) indicative of a deviation of the second current (I2) from a target current value dependent on the reference voltage (V REF ), for thereby reducing a deviation of the output voltage (V OUT ) from a target value.</p> |
