MULTIPLE MODE POWER REGULATOR

摘要

A power regulator (1) having an output terminal (14) for providing a regulated voltage, comprising:
a first control unit (35) for controlling a first operation mode,a second control unit (36) for controlling a second operation mode,a detection unit (40) connected to the output terminal (14) for
detecting, at start-up, whether or not an external inductor (30) is connected to the output terminal (14), foractivating the first operation mode when an external inductor (30) is detected, and foractivating the second operation mode when no external inductor is detected.;The detection unit (40) is further arranged for detecting in which of at least two distinct inductance ranges the inductance of the detected inductor (30) lies so as to provide inductance dependent control in the first operation mode.

主权项

1. A power regulator having a first operational mode and a second operational mode, the power regulator comprising:
an output terminal for providing a regulated voltage; a first control unit for controlling the power regulator in the first operational mode; a second control unit for controlling the power regulator in the second operational mode; a detection unit connected to the output terminal for detecting, at start-up, whether or not an external inductor is connected to the output terminal, which detection unit is further connected to the first control unit for activating the first operation mode when an external inductor is detected, and to the second control unit for activating the second operation mode when no external inductor is detected, the detection unit is further arranged for detecting in which of at least two distinct inductance ranges the inductance of the detected inductor lies so as to provide inductance dependent control in the first operation mode.