Patent ID: 8106531
Filing Date: 2012-01-31
Classification: H02M

Abstract:
1. A multi-output switching regulator, comprising: a single-input-multiple-output voltage converter converting an input voltage to a first output voltage at a first node and a second output voltage at a second node, wherein the voltage converter is a single-inductor switching regulator; an input capacitor connected with the input voltage at an input node; a first output capacitor having two ends, one of which is fixedly connected with the first node; and a second output capacitor having two ends, one of which is fixedly connected with the second node; wherein the other end of the first output capacitor and the other end of the second output capacitor are switchable between at least two of the following connections: (1) the other end of the first output capacitor being connected to ground, and the other end of the second output capacitor being connected to the input node; (2) the other end of the first output capacitor being connected to ground, and the other end of the second output capacitor being connected to the first node; (3) the other end of the first output capacitor being connected to the input node, and the other end of the second output capacitor being connected to ground; (4) the other end of the first output capacitor being connected to the input node, and the other end of the second output capacitor being connected to the input node; (5) the other end of the first output capacitor being connected to the input node, and the other end of the second output capacitor being connected to the first node; (6) the other end of the first output capacitor being connected to the second node, and the other end of the second output capacitor being connected to ground; (7) the other end of the first output capacitor being connected to the second node, and the other end of the second output capacitor being connected to the first node; or (8) both the other end of the first output capacitor and the other end of the second output capacitor being connected to ground.