Xin Zhang, Andrew Ferencz, et al.
APEC 2017
To overcome the limitations of transient handling capability, current capacity, power efficiency, and current density in existing single-inductor multiple-output (SIMO) converters, this article presents: 1) loop response enhancement by the fully comparator-based 'Buffet-Like' dual-sampling non-linear control; 2) voltage droop suppression by the hybrid digital LDO (HLDO) attached to each output; 3) efficiency enhancement by frequency hopping and bootstrapped N-type MOSFET (NMOS) output switches; and 4) the power density enhancement with a smaller than the chip power inductor. The prototype with two outputs achieves a transient handling capability of 2.1 A/ns, which is a significant advancement over the state of the art. A maximum current capacity of 2.2 A, and a peak efficiency of 96.1% are also measured using a 0806 miniature power inductor.
Xin Zhang, Andrew Ferencz, et al.
APEC 2017
Si Yuan Sim, Xin Zhang, et al.
APEC 2024
Xi Chen, Jiaxiang Feng, et al.
IEEE Journal of Solid-State Circuits
Matthew M. Ziegler, Krishnan Kailas, et al.
IEEE JESTCS