Switching converter and control circuit and method thereof
A switching converter and control circuit technology, applied in control/regulation systems, DC power input conversion to DC power output, instruments, etc., can solve the problem of large compensation amount of ripple compensation module, deviation of output voltage, and deterioration of dynamic characteristics And other issues
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[0112] Various embodiments of the invention will be described in more detail below with reference to the accompanying drawings. In the various drawings, the same elements are denoted by the same or similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale.
[0113] figure 1 A schematic block diagram of a switching converter according to an embodiment of the present invention is shown. like figure 1 As shown, the switching converter 100 is, for example, a BUCK topology, including a main circuit and a control circuit 110 .
[0114] The main circuit includes switches M1 and M2 connected in series between the input terminal VIN and the ground terminal GND, an inductor L connected between the middle node SW of the switches M1 and M2 and the output terminal VO, and an inductor L connected in series at the output terminal VO The sampling resistors R11 and R12 between the ground terminal GND and the output capacitor Co connecte...
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