A rectifier circuit with bootstrap circuit

Abstract

The invention discloses a rectifier circuit with a bootstrap circuit, which comprises: an NMOS cross-coupling input stage circuit, used to receive a positive and negative alternating current signal; a PMOS switch output stage circuit, used to receive the received The AC signal is rectified and the output current is provided; the bootstrap circuit is used to provide the turn-on voltage of the PMOS switch output stage to offset the threshold loss; the cross-coupled NMOS input stage circuit includes a cross-coupled first NMOS transistor and a second NOMS tube; the PMOS switch output stage circuit 320 includes a first PMOS tube and a second PMOS tube interconnected with gates; the bootstrap circuit includes a third PMOS tube and a bootstrap capacitor, and the source of the third PMOS tube Connected to the output voltage, the drain and the gate are connected to the bootstrap capacitor, which uses a diode-connected third PMOS transistor to provide a charging and discharging circuit for the bootstrap capacitor, and makes the charging of the bootstrap capacitor smaller than that of the PMOS switch The potential of a threshold voltage of the source stage of the first PMOS transistor or the second PMOS transistor MP2 in the output stage circuit.

Description

technical field [0001] The invention relates to the field of high-frequency rectification, in particular to a MOS rectification circuit module in the high-frequency rectification circuit. Background technique [0002] A rectifier circuit is a circuit that converts AC voltage into DC voltage. The rectification circuit can be divided into half-wave rectification circuit and full-wave rectification circuit according to the circuit structure. The half-wave rectification circuit removes the half cycle of the alternating current, but does not change the frequency of the alternating current in the direct current. The full-wave rectification combines the positive and negative half cycles of the alternating current as they are, so The frequency of rectification is extended to twice that of alternating current, which is also beneficial to the filtering of high-frequency signals for filter circuits. Therefore, for systems requiring high energy conversion efficiency, full-wave rectific...

AI Technical Summary

Problems solved by technology

However, there are two capacitive elements and two diode-connected PMOS transistors in this solution, the circuit structure is complex, and the capacitive element will occupy a large area of ​​the chip layout, thereby increasing the production cost

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