Abstract
This paper presents a fully integrated buck regulator design for low-power applications. In order to enable the usage of on-chip inductor for low load current 10-40 mA, the proposed buck regulator is designed with an ultra-high switching frequency at 2 GHz, which is the highest switching frequency reported so far. To reduce the power switch losses, resonant switching scheme is utilized to save the switching clock energy. Tunable slew rate recovery circuits are used to improve the efficiency of the design. The proposed buck regulator has been implemented in 65-nm CMOS technology with a 1.1-V input. Measurement shows a wide output range of 0.3-0.86 V. The proposed design achieves up to 73% power efficiency.
| Original language | English (US) |
|---|---|
| Article number | 8386797 |
| Pages (from-to) | 2663-2674 |
| Number of pages | 12 |
| Journal | IEEE Journal of Solid-State Circuits |
| Volume | 53 |
| Issue number | 9 |
| DOIs | |
| State | Published - Sep 2018 |
Funding
Manuscript received November 29, 2017; revised March 12, 2018 and April 25, 2018; accepted May 19, 2018. Date of publication June 15, 2018; date of current version August 27, 2018. This paper was approved by Associate Editor Piero Malcovati. This work was supported by the National Science Foundation under Grant CCF-1618065. (Corresponding author: Jie Gu.) The authors are with the Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, IL 60208 USA (e-mail: [email protected]; [email protected]).
Keywords
- Buck regulator
- fully integrated
- high switching frequency
- low-power applications
- resonant switching
ASJC Scopus subject areas
- Electrical and Electronic Engineering