| CPC H02M 3/1582 (2013.01) [H02M 3/07 (2013.01); H02M 1/0095 (2021.05)] | 11 Claims |
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1. An integrated circuit comprising a buck-boost converter for converting an input voltage at an input node into an output voltage at an output node, the converter comprising:
first and second inductor nodes for connection of an inductor therebetween, the second inductor node coupled to a reference voltage node;
a first converter stage coupled between the input node and the first inductor node;
a second converter stage coupled between the first inductor node and the output node; and
an output capacitor coupled between the output node and the reference voltage node,
wherein one or more of the first converter stage and the second converter stage comprises a switching network, comprising:
a first switch for selectively connecting a first flying capacitor node to a stage input node;
a second switch for selectively connecting the first flying capacitor node to a stage output node;
a third switch for selectively connecting a second flying capacitor node to the stage output node; and
a fourth switch for selectively connecting the second flying capacitor node to a reference voltage, the first and second flying capacitor nodes for connection of a flying capacitor therebetween.
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