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Transcript
Tips ân Tricks When choosing an output capacitor value, a good starting point is to set the LC filter characteristic impedance equal to the load resistance. This produces an acceptable voltage overshoot when operating at full load and having the load abruptly removed. Zo â¡ â L/C C = L/R2 = (I2o * L)/Vo2 When choosing a diode for D1, choose a device with a sufficient current rating to handle the inductor current during the discharge part of the pulse cycle (IL). FIGURE 4-1: BUCK REGULATOR Q1 Vs © 2006 Microchip Technology Inc. L D1 C Vo RL DS41285A-page 11
