Specification

Description:TECHNICAL FIELD [01] The present invention relates to the field of voltage converters. In particular, it relates to a DC-DC converter and method thereof. Further, relates to a DC-DC converter and method to step up the voltage using the said converter. BACKGROUND [02] Background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed disclosure, or that any publication specifically or implicitly referenced is prior art. [03] Voltage converters are widely used in photovoltaic (PV) generating systems as an interface between PV module and the load. Generally, a solar PV module can only generate low DC output voltage. Thus, to step-up the PV module output voltage, power electronic interfaces or power converters such as transformers, voltage multiplier cell, etc. is a compulsory. But, challenges such as increased size, weight, and efficiency losses arise when transformers are utilized to elevate voltages for charging DC buses or grids in PV systems. Hence, scientists are employing different approaches to eliminate the use of transformers. [04] Most of the modern boost converters are synthesized using the following voltage gain extension techniques such as voltage multiplier cell (VMC), switched inductor, single switch higher order boost converters, and coupled inductor. The main drawbacks of the said following voltage gain extension techniques is the usage of increased number of components, particularly power-dissipating elements like diodes. Furthermore, the gain achieved by these methods does not scale effectively with the duty cycle. Also, continuously increasing the number of components to achieve higher gains is not a practical solution. [05] A DC-DC converter is an electronic circuit that facilitates the conversion of direct current (DC) from one voltage level to another. There are several types of DC-DC converter which can regulate the unregulated DC voltage by means of increasing or decreasing the value of DC output voltage. The different types of DC-DC converters include boost converter, buck converter, buck-boost converter, cuk converter, Single Ended Primary Inductor Converter (SEPIC), and flyback–boost converter. The DC-DC boost converter will boost up or step up the output voltage to be greater than input voltage. [06] When choosing a DC–DC boost converter, it is imperative that several criteria to be satisfied. These criteria include high efficiency, high reliability, low conduction losses, low switching losses and low cost. Due to this, scientists worldwide are continually researching and inventing new topologies for DC–DC converters. It increases the total number of DC–DC converters that can be used for a variety of power-conversion operations. One of the existing prior arts, authored by V. Karthikeyan et. al., entitled "High step-up gain dc–dc converter with switched capacitor and regenerative boost configuration for solar PV applications", provides a DC-DC converter with the observed maximum efficiency of 95.60 % at 480 W. But a better merit is required for more suitable solar PV applications. [07] Hence, there is a need for a substantially higher voltage gain DC-DC boost convertor topology which is more suitable for solar PV applications. OBJECTS OF THE PRESENT DISCLOSURE [08] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below. [09] It is an object of the present disclosure to provide a DC-DC converter circuit and method thereof. [10] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which offers a more efficient and simplified solution for achieving high voltage gain. [11] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which simplifies the voltage step-up process and reduces reliance on transformers. [12] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which achieves a substantially higher voltage gain with significantly fewer circuit components. [13] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which provides a wide range of achievable gains, including an exceptional value of 400 at a duty ratio of 0.7. [14] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which does not incorporate coupling elements or isolation circuits hence, has a compact design and minimizes losses caused by electromagnetic interference (EMI). [15] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which utilizes only two low-side switches, making it well-suited for PV-based applications with a single ground reference. [16] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which offers excellent line and voltage regulation, coupled with efficient gain scaling with the duty ratio thereby adaptable to different voltage requirements in various applications. [17] It is another object of the present disclosure to provide a DC-DC converter circuit and method thereof, which eliminate the need for transformers and employing a topology with quintic gain, the invention aims to improve power conversion efficiency, reduce size and weight, and simplify the overall system design. SUMMARY [18] The present invention relates to the field of voltage converters. In particular, it relates to a DC-DC converter and method thereof. [19] An aspect of the present disclosure provides a DC-DC converter circuit (100), the DC-DC converter circuit comprising: a first stage comprises of at least one single boost converter (110) coupled to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage gain; and a second stage comprises of at least one single-switch quantic boost converter (120), coupled with the at least one single boost converter (110) and at least one output voltage terminal (120-17), and configured to increase quintic voltage gain. [20] In an aspect, the at least one single boost converter (110) comprises of one or more switching element (110-1), one or more inductor (110-2), one or more diode (110-3), and one or more capacitor (110-4) coupled to the at least one input voltage terminal (110-5). [21] In an aspect, the at least one single-switch quantic boost converter (120) comprises of the one or more switching element (120-14), the one or more inductor (120-1), (120-5), (120-9), and (120-13), the one or more diode (120-3), (120-4), (120-7), (120-8), (120-11), (120-12) and (120-16), and the one or more capacitor (120-2), (120-6), (120-10), (120-15) coupled to the at least one output voltage terminal (120-17). [22] In an aspect, the one or more switching element (110-1) and (120-14) comprises at least one of a metal oxide semiconductor field effect transistor (MOSFET). [23] In an aspect, the DC-DC converter (110) yields a voltage gain of at least 400 at a predefined duty ratio, wherein the predefined duty ratio pertains to at least 0.7. [24] In an aspect, a method to step-up output voltage using DC-DC converter circuit (100), the method comprising steps of cascading, the first stage comprises of the at least one single boost converter (110) with the second stage comprises of the at least one single-switch quantic boost converter (120). Further, receiving, an input voltage at the at least one input voltage terminal (110-5). Further, switching on, the one or more switching element (110-1) and (120-14) to execute an operation mode 1, wherein the operation mode 1 is configured to reduce input current level and provide initial voltage gain. Furthermore, switching off, the one or more switching element (110-1) and (120-14) to execute an operation mode 2, wherein the operation mode 2 is configured to increase the voltage gain. Finally, converting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17). [25] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components. BRIEF DESCRIPTION OF DRAWINGS [26] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in, and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure, and together with the description, serve to explain the principles of the present disclosure. [27] In the figures, similar components, and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label. [28] FIG. 1 illustrates an exemplary circuit diagram of the DC-DC converter (100), in accordance with an embodiment of the present disclosure. [29] FIG. 2 illustrates equivalent circuit of the DC-DC converter (100) during ON period of the operation mode 1, in accordance with an embodiment of the present disclosure. [30] FIG. 3 illustrates equivalent circuit of the DC-DC converter (100) during OFF period of the operation mode 2, in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION [31] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims. [32] In some embodiments, the numbers expressing quantities of ingredients, properties such as concentration, and so forth, used to describe and claim certain embodiments of the invention are to be understood as being modified in some instances by the term “about.” Accordingly, in some embodiments, the numerical parameters set forth in the written description are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some 30 embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. [33] The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. [34] Various aspects of the present disclosure are described with respect to FIG 1-3. [35] The present invention relates to the field of voltage converters. In particular, it relates to a DC-DC converter and method thereof. [36] An aspect of the present disclosure provides a DC-DC converter circuit (100), the DC-DC converter circuit comprising: a first stage comprises of at least one single boost converter (110) coupled to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage gain; and a second stage comprises of at least one single-switch quantic boost converter (120), coupled with the at least one single boost converter (110) and at least one output voltage terminal (120-17), and configured to increase quintic voltage gain. [37] In an aspect, the at least one single boost converter (110) comprises of one or more switching element (110-1), one or more inductor (110-2), one or more diode (110-3), and one or more capacitor (110-4) coupled to the at least one input voltage terminal (110-5). [38] In an aspect, the at least one single-switch quantic boost converter (120) comprises of the one or more switching element (120-14), the one or more inductor (120-1), (120-5), (120-9), and (120-13), the one or more diode (120-3), (120-4), (120-7), (120-8), (120-11), (120-12) and (120-16), and the one or more capacitor (120-2), (120-6), (120-10), (120-15) coupled to the at least one output voltage terminal (120-17). [39] In an aspect, the one or more switching element (110-1) and (120-14) comprises at least one of a metal oxide semiconductor field effect transistor (MOSFET). [40] In an aspect, the DC-DC converter (110) yields a voltage gain of at least 400 at a predefined duty ratio, wherein the predefined duty ratio pertains to at least 0.7. [41] In an aspect, a method to step-up output voltage using DC-DC converter circuit (100), the method comprising steps of cascading, the first stage comprises of the at least one single boost converter (110) with the second stage comprises of the at least one single-switch quantic boost converter (120). Further, receiving, an input voltage at the at least one input voltage terminal (110-5). Further, switching on, the one or more switching element (110-1) and (120-14) to execute an operation mode 1, wherein the operation mode 1 is configured to reduce input current level and provide initial voltage gain. Furthermore, switching off, the one or more switching element (110-1) and (120-14) to execute an operation mode 2, wherein the operation mode 2 is configured to increase the voltage gain. Finally, converting, the received input voltage to a rectified output voltage to give an output voltage at the at least one output voltage terminal (120-17). [42] FIG. 1 illustrates an exemplary circuit diagram of the DC-DC converter (100), in accordance with an embodiment of the present disclosure. [43] In an embodiment, referring to FIG. 1, the DC-DC converter circuit (100) comprising: a first stage comprises of at least one single boost converter (110) coupled to at least one input voltage terminal (110-5), and configured to reduce input current level and provide initial voltage gain; and a second stage comprises of at least one single-switch quantic boost converter (120), coupled with the at least one single boost converter (110) and at least one output voltage terminal (120-17), and configured to increase quintic voltage gain. [44] In an embodiment, referring to FIG. 1, the DC-DC converter circuit (100), uses at least 20 circuit components which comprises the one or more switching elements 110-1 and 120-14; the one or more inductors 110-2, 120-1,120-5,120-9, and 120-13; the one or more capacitors 110-4, 120-2,120-6, 120-10, and 120-15; the one or more diodes 110-3, 120-3,120-4,120-7, 120-8,120-11,120-12 and 120-16 with two terminals one for input voltage and one for output voltage. [45] FIG. 2 illustrates equivalent circuit of the DC-DC converter circuit (100) during ON period of the operation mode 1, in accordance with an embodiment of the present disclosure. [46] In an embodiment, referring to FIG. 2, the one or more switching elements 110-1 and 120-14 are operated simultaneously giving rise to two possible modes of operation with the following valid assumptions: all the semiconductor devices are ideal, all the capacitors are pre-charged and the converter operates in continuous conduction mode (CCM). [47] In an embodiment, referring to FIG. 2, the operation mode 1 (0