Patent ID: 9477249
Filing Date: 2016-10-25
CPC Classification: G05F,H02J,H02M

Claim Text:
1. A DC-DC converter comprising: a load; a first circuit comprising a first resistor; a second circuit comprising an instrumentation amplifier; a third circuit comprising an error amplifier; and a first switch, wherein one end of the load is electrically connected to one end of the first resistor and a first input terminal of the instrumentation amplifier, wherein the other end of the load is electrically connected to a second input terminal of the instrumentation amplifier and one end of the first switch, wherein the other end of the first resistor is electrically connected to a first input terminal of the error amplifier, wherein the second circuit is electrically connected to a second input terminal of the error amplifier, wherein the third circuit is electrically connected to the first switch, wherein the one end of the first switch is provided between a first input node of the DC-DC converter and a first output node of the DC-DC converter, wherein the first circuit is configured to output a first voltage proportional to an input voltage input to the DC-DC converter to the third circuit, wherein the second circuit is configured to output a second voltage proportional to a current generated in the load to the third circuit, and wherein the third circuit is configured to hold a ratio of the first voltage and the second voltage constant.