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ISL8018-Slide7

One big benefit of operating in an out-of-phase system is input current ripple is minimized. If Renesas were to compare three converters operating in-phase, the peak input current would be 24A or 12ARMS at 50% duty cycle. On the other hand, an out-of-phase system would have an 8A peak or 4.3A at 50% duty cycle. Thus, significantly reducing the input capacitor requirements and EMI spectrum.

PTM Published on: 2016-01-05