Current-mode DC-DC converter
A converter and current mode technology, applied in the direction of conversion equipment without intermediate conversion to AC, can solve the problems of reducing the integration of conversion chips, increasing the PCB space of printed circuit boards, and difficulty in integration, so as to simplify the pins of conversion chips , reduce the PCB area, and achieve the effect of complete integration
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[0039] The present invention will be further described below in conjunction with accompanying drawings and embodiments thereof.
[0040] refer to image 3 , the current mode DC-DC converter of the present invention includes a feedback module 1, a compensation module 2 and a modulation module 3;
[0041] The feedback module 1 is used to set the converter output voltage V OUT It consists of two feedback resistors in series, and the common terminal of these two feedback resistors outputs the feedback voltage V FB to compensation module 2.
[0042] The compensation module 2 includes an error amplifier EA, a compensation resistor R C , compensation capacitor C C And the transconductance amplifier OTA, the error amplifier EA, its non-inverting input terminal is connected to the reference voltage V generated inside the converter REF , whose inverting input is connected to the feedback voltage V FB , and its output terminal outputs the comparison signal V COMP to modulation blo...
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