Charge pump circuit
A charge pump and circuit technology, applied to electrical components, conversion equipment without intermediate conversion to AC, output power conversion devices, etc., can solve problems such as adjusting working voltage
Active Publication Date: 2018-06-29
SILICON INTEGRATED SYSTEMS
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Problems solved by technology
Under such a structure, when a specific input voltage is provided to the Dickson charge pump, it can only output a fixed operating voltage, and it is impossible to randomly adjust the potential of the operating voltage according to the actual product requirements or specifications.
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[0044] The detailed features and advantages of the present invention are described in detail below in the embodiments, the content of which is sufficient for those of ordinary skill in the art to understand the technical content of the present invention and implement it accordingly, and according to the content recorded in this specification, the scope of protection of the claims and the appended FIG. 1 , those skilled in the art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the concept of the present invention in detail, but do not limit the scope of the present invention in any way.
[0045] figure 1 It is a circuit structure diagram of a charge pump circuit according to an embodiment of the present invention. Such as figure 1 As shown, the charge pump circuit 1 includes a plurality of boosting circuits 10_1 - 10_N, a plurality of switching circuits 11_1 - 11_(N−1) and a control circuit 14 . Th...
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A charge pump circuit includes N boosting circuits, N-2 switch circuits and a control circuit. The k boosting circuit includes a one-way element and a capacitor. The positive terminal of the one-way element of the k boosting circuit is electrically connected to the negative terminal of the one-way element of the (k-1) boosting circuit. The first terminal of the capacitor is electrically connected to the negative terminal of the one-way element of the k boosting circuit. The (2i-1) switch circuit switches the (2i-1) boosting circuit to the current path of a first time pulse terminal or a grounding terminal selectively according to control signals of the control circuit. The 2i switch circuit is electrically connected to the 2i boosting circuit and selectivelyswitch the 2i boosting circuit to the current path of a second time pulse terminal or the grounding terminal according to control signals of the control circuit. According to the invention, required output voltage can be adjusted according to the switching quantity.
Description
technical field [0001] The invention relates to a charge pump circuit, in particular to a charge pump circuit with switching function. Background technique [0002] Many electronic products must use a working voltage that meets the specifications before they can drive internal circuits to achieve normal operation. In order to supply an appropriate operating voltage to electronic products, it is common practice to use a charge pump as a booster circuit (Booster) to output an appropriate operating voltage. For example, a charge pump is used to adjust a low-level input voltage to a high-level operating voltage. One of the known charge pumps is a Dickson charge pump. [0003] The Dixon charge pump is a multi-stage charge pump composed of multiple diodes and capacitors, and each capacitor is driven by a clock signal. The input voltage of the Dickson charge pump will be increased step by step, thereby providing the high potential output voltage required by electronic products. ...
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IPC IPC(8): H02M3/07
CPCH02M3/073
Inventor 林文琦吴政达陈耿男
Owner SILICON INTEGRATED SYSTEMS