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A novel single-inductor-dual-output (SIDO) boost regulator with constant-charge-auto-hopping (CCAH) control to minimize the cross interference between channels is presented. In order to have a predictable system switching noise spectrum, the switching frequency of the converter is automatically hopped between 1.25 MHz and 1.25 MHz/N where N = 2 to 5 according to the loads and during transient. A prototype...
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