A Monolithic, 10.5 W/mm<sup>2</sup>, 600 MHz Top-Metal and C4 Planar Spiral Inductor-Based Integrated Buck Voltage Regulator on 16 nm Class
A monolithic buck voltage regulator (VR) built with top-metal and industry-first C4 planar spiral inductors demonstrates 2.5 times higher power density than prior art, providing efficient alternative to low-dropout linear regulators (LDOs) powering disaggregated digital, IO and PHY IPs. The 1.1 V single-stack power stage, DPWM delay-line, self-triggered windowed-flash ADC, and fully digital and reconfigurable controller are designed for high frequency, delivering 10.5 W/mm2 at 600 MHz, with 0.35–0.85 V operating range and 18%–25% improvement in efficiency over an ideal LDO.
Authors
- Nachiket Desai (ORCID: https://orcid.org/0000-0002-6795-6440)
- Kaladhar Radhakrishnan (ORCID: https://orcid.org/0000-0002-0442-0796)
- Harish K. Krishnamurthy (ORCID: https://orcid.org/0000-0001-5927-8339)
- Xiaosen Liu (ORCID: https://orcid.org/0000-0003-2767-215X)
- Sheldon Weng
- Krishnan Ravichandran (ORCID: https://orcid.org/0000-0003-2271-4314)
- Anne Augustine (ORCID: https://orcid.org/0000-0002-4521-573X)
- James Tschanz (ORCID: https://orcid.org/0000-0003-0317-4332)
- Vivek De (ORCID: https://orcid.org/0000-0001-5207-1079)
- Suhwan Kim (ORCID: https://orcid.org/0000-0001-9107-2963)
- Trương Thu Hương (ORCID: https://orcid.org/0000-0002-6428-8539)
- Jingshu Yu
- Zakir K. Ahmed
- Phong D. Bach
Institutions
- Intel (United States) (US)
Publication Details
- Journal
- IEEE Journal of Solid-State Circuits
- Published
- 2024-10-03
- DOI
- https://doi.org/10.1109/jssc.2024.3464448
- Citations
- 2
- Primary Topic
- Silicon Carbide Semiconductor Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.42