Boost DC-DC Converter with Inrush Current Protection Device and Inrush Current Protecting Method

摘要

A boost DC-DC converter with an inrush current protection device is disclosed. The boost DC-DC converter includes an output stage, including a high-side transistor for providing an output current, a low-side transistor for sinking the output current, a pass transistor for passing through the output current to an output node, an inductor coupled to the high-side transistor, the low-side transistor, and the pass transistor for passing through the output current, and an output capacitor coupled to the pass transistor for boosting an output voltage at the output node, and a protection diode parallel connected to the inductor and the low-side transistor for preventing an inrush current from passing through the inductor and the pass transistor to the output node.

主权项

1. A boost DC-DC converter with an inrush current protection device, comprising:
an output stage, comprising:
a high-side transistor, for providing an output current;a low-side transistor, for sinking the output current;a pass transistor, for passing through the output current to an output node;an inductor, coupled to the high-side transistor, the low-side transistor, and the pass transistor, for passing through the output current; andan output capacitor, coupled to the pass transistor, for boosting an output voltage at the output node; and a protection diode, parallel connected to the inductor and the low-side transistor, for preventing an inrush current from passing through the inductor and the pass transistor to the output node.