Voltage converting circuit having voltage feedback terminal

摘要

A voltage converting circuit includes an input terminal, an output terminal, a main circuit a feedback terminal, a testing unit, and a detection unit. The main circuit is coupled between the input terminal and the output terminal to convert a first voltage input from the input terminal into a second voltage and output the second voltage via the output terminal. The feedback terminal is coupled to the output terminal and the testing unit is coupled to the feedback terminal to output a testing current to the feedback terminal to change a third voltage of the feedback terminal. The detection unit is coupled between the feedback terminal and the main circuit. The detection unit detects a change to the third voltage feedback from the feedback terminal to enable or disable the main circuit according to the change to the third voltage.

主权项

1. A voltage converting circuit comprising:
an input terminal; an output terminal; a main circuit coupled between the input terminal and the output terminal, the main circuit configured to convert a first voltage input from the input terminal into a second voltage and output the second voltage via the output terminal; a feedback terminal coupled to the output terminal; a testing unit coupled to the feedback terminal and configured to output a testing current to the feedback terminal to change a third voltage of the feedback terminal; and a detection unit coupled between the feedback terminal and the main circuit and configured to detect a change to the third voltage feedback from the feedback terminal and to enable or disable the main circuit in accordance with the change to the third voltage.