Digital Control of Single-Inductor Multiple-Output Step-Down DC–DC Converters in CCM
作者： D. Trevisan , P. Mattavelli , P. Tenti
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摘要: This paper investigates the application of digital control for non-isolated single-inductor multiple-output step-down dc-dc converters operating in continuous-conduction mode. The accurate and independent each output requires a sophisticated architecture so as to minimize cross-regulation problem. adopted includes separate regulation common-mode differential-mode voltages. Due loop dependence on load current, variable-gain functional block has been investigated; this provision keeps gain constant under different conditions. Moreover, nonlinear evaluation voltage investigated order improve system dynamic response asymmetrical changes. Even if aimed at an integrated solution, experimental verifications have performed using discrete components, implementing field-programmable gate array. Simulation results three-output converter dual-output (Vin = 2.5 4divide5 V, Vo1 Vo2 0.9divide1.5 Ioperp Io2 0 4divide0.6 A) confirm proposed analysis.
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