Rectifying circuit with bootstrap circuit
A rectifier circuit, bootstrap circuit technology, applied in electrical components, output power conversion devices, AC power input into DC power output and other directions, can solve problems such as increasing production costs and complex circuit structures, avoiding backflow, improving The effect of response rate and strong rectification ability
Active Publication Date: 2016-01-13
北京中科格励微科技有限公司
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[0045] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0046] In the first embodiment of the present invention, a rectifier circuit with a bootstrap circuit is provided. Such as Figure 2a As shown, the rectifier circuit includes:
[0047] NMOS cross-coupled input stage circuit 310, used to receive a positive and negative AC signal Vp, Vn;
[0048] A PMOS switch output stage circuit 320, configured to rectify the received AC signal and provide an output current Vo;
[0049]The bootstrap circuit 330 , which includes a diode-connected PMOS transistor and a capacitor, is used to provide the turn-on voltage of the PMOS switch output stage 320 to counteract the threshold loss.
[0050] The cross-coupled NMOS input stage circuit 310 includes a cross-coupled first NMOS transistor...
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The invention discloses a rectifying circuit with a bootstrap circuit. The rectifying circuit comprises an NMOS cross coupling input stage circuit, a PMOS switched output stage circuit and the bootstrap circuit, wherein the NMOS cross coupling input stage circuit is used for receiving a positive and negative jump alternating-current signal; the PMOS switched output stage circuit is used for rectifying the received alternating-current signal and providing an output current; and the bootstrap circuit is used for providing PMOS switched output stage turn-on voltage so as to offset threshold loss. The NMOS cross coupling input stage circuit in cross coupling connection comprises a first NMOS tube and a second NMOS tube which are in cross coupling connection. The PMOS switched output stage circuit 320 comprises a first PMOS tube and a second PMOS tube which are in grid interconnection. The bootstrap circuit comprises a third PMOS tube and a bootstrap capacitor. The source of the third PMOS tube is connected to output voltage, the drain and the grid of the third PMOS tube are connected to the bootstrap capacitor, and the bootstrap circuit provides a charging and discharging circuit for the bootstrap capacitor through the third PMOS tube connected with a diode. The bootstrap capacitor is charged to a potential of a threshold voltage of the source of the first PMOS tube or the second PMOS tube MP2 in the PMOS switched 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...
Claims
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Inventor 张峰潘东方李金良刘姗姗
Owner 北京中科格励微科技有限公司