Minimum Phase Wide Output Range Digitally Controlled SIDO Boost Converter

摘要

This paper presents a novel control technique for a wide output voltage range digitally controlled SIDO boost converter. It employs minimum phase conditions reported in , and extends the same to SIDO boost converter to eliminate the effect of RHP zero. Further, the proposed work employs input-output linearization technique , to linearize the control-to-output transfer function across different operating points to achieve improved stability under unbalanced loads and a wide output voltage range on each output of the proposed SIDO boost power converter. The SIDO boost regulator was verified experimentally for an input voltage of 3.3 V and a maximum simultaneous load current of 350 mA on each output. Measurement results demonstrate that the proposed design achieves a wide output voltage range of 4.8 V–13.75 V, with ability to dynamically transition across these different output voltages in both small and big voltage steps.