A bootstrap circuit and bootstrap method for an integrated junction field effect transistor
A technology of field-effect transistors and bootstrap circuits, which is applied to electrical components, electronic switches, and conversion equipment without intermediate conversion to AC, etc., can solve the problems of difficult integration of bootstrap diodes and complex circuits, and achieve improved integration and reduced The effect of complexity and simple structure
Active Publication Date: 2018-07-06
宁波宝芯源功率半导体有限公司
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Problems solved by technology
[0012] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a bootstrap circuit and a bootstrap method for integrating junction field effect transistors, which are used to solve the problem that the bootstrap diode is difficult to integrate in the drive circuit in the prior art. Complicated issues
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[0037] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0038] see Figure 2 ~ Figure 3 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbi...
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The invention provides a bootstrapping circuit and a bootstrapping method for an integrated junction type field effect transistor. The bootstrapping circuit comprises a driving circuit, a junction type field effect transistor, a bootstrapping capacitor, a high-edge transistor and a low-edge transistor, wherein the first output end of the driving circuit is connected to the grid of the high-edge transistor; the second output end of the driving circuit is connected to the grid of the low-edge transistor; the third output end of the driving circuit is connected to the source of the grid of the high-edge transistor, the drain of the low-edge transistor, a load and the first end of the bootstrapping capacitor; the junction type field effect transistor is integrated to the driving circuit; the grid of the junction type field effect transistor is connected to the driving circuit in order to input a logical signal; the source of the junction type field effect transistor is connected to a driving power supply; the drain of the junction type field effect transistor is connected to the second end of the bootstrapping capacitor. According to the bootstrapping circuit and the bootstrapping method, the junction type field effect transistor is integrated to the driving circuit, so that the quantity of elements in a whole system can be effectively reduced, the complexity degree of the circuit is lowered, and the integration degree of a device is increased.
Description
technical field [0001] The invention relates to a semiconductor integrated circuit and a bootstrap method thereof, in particular to a bootstrap circuit and a bootstrap method of an integrated junction field effect transistor. Background technique [0002] Along with the energy-saving requirements of portable electronic products and the technical difficulties in heat dissipation of portable electronic products, higher and higher requirements are put forward for the power management chips, especially the efficiency requirements in the voltage conversion process. Among them, the wide application of switching power supply management is just to adapt to the high efficiency and energy saving requirements of this contemporary electronic consumer products, breaking through the bottleneck of low efficiency and inability to achieve boost management that cannot be broken through by linear power supply management. Even the change of power management mode achieves a step most important i...
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IPC IPC(8): H02M3/07
CPCH03K17/6871
Inventor 王凡
Owner 宁波宝芯源功率半导体有限公司