Switched-capacitor voltage converter
AssigneeSouthchip Semiconductor Technology (Shanghai) Co., Ltd.
InventorWei Zhao
Life of this patent
Estimating the term…
Abstract
A switched-capacitor voltage converter includes a loop regulator module, a clamp transistor, and a clamp circuit. The loop regulator module is configured to monitor electrical parameters of an input terminal and an output terminal, and output a voltage to a gate of the clamp transistor based on electrical parameters to stabilize a voltage of an output terminal of the switched-capacitor voltage converter at a target value. The clamp circuit is connected between the two terminals of the clamp transistor, such that the voltage difference between the drain and the source of the clamp transistor is less than the withstand voltage of the clamp transistor.
Claims15
A switched-capacitor voltage converter, comprising:
- a loop regulator module, a clamp transistor, and a clamp circuit;
- wherein
- a gate of the clamp transistor is connected to a voltage output terminal of the loop regulator module, a drain of the clamp transistor is connected to an input terminal of the switched-capacitor voltage converter, a source of the clamp transistor is connected to a reference terminal of the switched-capacitor voltage converter, and the clamp circuit is connected between the source and the drain of the clamp transistor;
- the loop regulator module is configured to monitor electrical parameters of the input terminal and an output terminal of the switched-capacitor voltage converter, and output a voltage to the gate of the clamp transistor based on the electrical parameters to stabilize a voltage of the output terminal at a target value;
- and
- the clamp circuit is configured to control a voltage difference between the drain and the source of the clamp transistor to be less than or equal to a withstand voltage of the clamp transistor.
Dependencies are inferred from the claim text.