description: LM2576 application notes: LM2576 Application Circuit - Adjustable 3A Low Output Ripple Power Supply Circuit from 1.2V to 55V
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1) The feedback line should be far away from the inductor. The input/output capacitor, Schottky diode, ground terminal and control terminal should be as short and thick as possible. It is best to shield with ground wire.
2) Due to the high conversion efficiency of the device, there is almost no need to consider the heat dissipation problem. 