A 3-Ratio 85% Efficient Resonant SC Converter With On-Chip Coil for Li-Ion Battery Operation

authored by

Peter Renz, Maik Peter Kaufmann, Michael Lueders, Bernhard Wicht

Abstract

This letter introduces a fully integrated hybrid multiratio resonant dc–dc converter implemented in a 130-nm BCD process. With a 3.0–4.5 V input voltage range it is fully compatible with Li-ion batteries. It provides output voltages of 1.5–1.8 V with an output current range of 500 μA–120 mA, suitable for wearable applications. The proposed switch conductance regulation (SwCR) achieves a flat converter efficiency across the full load range together with a small output voltage ripple of

Organisation(s)

Mixed-Signal Circuits Section

External Organisation(s)

Texas Instruments

Type

Article

Journal

IEEE Solid-State Circuits Letters

Volume

2

Pages

236-239

No. of pages

4

Publication date

2019

Publication status

Published

Peer reviewed

Yes

Electronic version(s)

https://doi.org/10.1109/lssc.2019.2927131 (Access: Closed)