Parameter setting circuit of a power conversion apparatus and a method for generating a current

#This application claims the priority benefit of Taiwan application serial no. 104136786, filed on Nov. 9, 2015. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.

#1. Field of the Invention

#The invention relates to a parameter setting circuit and a method for generating a current, and particularly relates to a parameter setting circuit and a method for generating a current for a power conversion apparatus.

#The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

#FIG. 1A is a block view illustrating a parameter setting circuit of the invention.

#FIG. 1B is a schematic view illustrating the parameter setting circuit of the invention.

#Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.

#Several embodiments are provided below to describe the invention. However, the invention is not limited to the embodiments described herein. Also, the embodiments can be properly combined. Throughout the specification (including claims) of the invention, the term “couple” may refer to any direct or indirect connection means. For example, if it is described that a first device is coupled to a second device, it shall be interpreted that the first device may be directly connected to the second device or indirectly connected to the second device through another device or through a connection means. Moreover, the terra “resistor” may refer to at least one resistor, a resistance network, a capacitor, an inductor, or any element that provides a resistance value.

#FIG. 1A is a block view illustrating a parameter setting circuit of the invention. Referring to FIG. 1, a parameter setting circuit 400 of the invention is a parameter setting circuit of a power conversion apparatus, for example. The parameter setting circuit 400 includes a switch unit 440, an internal parameter adjustment unit 450, and a setting unit 420. The parameter setting circuit 400 is coupled to a first end of an external setting impedor 500. A second end of the external setting impedor 500 is coupled to the first voltage VIN. The switch unit 440 is coupled to the external setting impedor 500. In the present embodiment, the external setting impedor 500 is an element having an electrical impedance, and the electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied. The setting unit 420 is coupled to the switch unit 440. The internal parameter adjustment unit 450 has a predetermined parameter ratio 452 and a setting reference unit 454. The setting reference unit 454 is coupled to the switch unit 440. Also, the reference setting circuit 400 is coupled to the external setting impedor through the switch unit 440. The predetermined parameter ratio 452 is a resistance ratio, a current ratio, or a voltage ratio, for example. However, the invention does not intend to impose a limitation in this regard.