A 25 mV-Startup Cold Start System With On-Chip Magnetics for Thermal Energy Harvesting

被引：0

作者：

Garcha, Preet ^{[1
]}

El-Damak, Dina ^{[1
,2
]}

Desai, Nachiket ^{[1
,3
]}

Troncoso, Jorge ^{[1
]}

Mazotti, Erika ^{[4
]}

Mullenix, Joyce ^{[4
]}

Tang, Shaoping ^{[4
]}

Trombley, Django ^{[4
]}

Buss, Dennis ^{[1
,4
]}

Lang, Jeffrey ^{[1
]}

Chandrakasan, Anantha ^{[1
]}

机构：

[1] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] Univ Southern Calif, Los Angeles, CA USA

[3] Intel Labs, Hillsboro, OR USA

[4] Texas Instruments Inc, Richardson, TX USA

来源：

ESSCIRC 2017 - 43RD IEEE EUROPEAN SOLID STATE CIRCUITS CONFERENCE | 2017年

关键词：

energy harvesting; startup; on-chip transformer; integrated magnetics; optimization; Meissner oscillator; cold start; BOOST CONVERTER; VOLTAGE;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Thermal energy harvesting systems use boost converters for high-efficiency low voltage operation, but lack the ability for low voltage startup without off-chip transformers. We present a cold start system that uses integrated magnetics instead of external transformers in a Meissner Oscillator to start up from ultra low voltages, with a switched capacitor DC-DC circuit for additional voltage gain. The oscillator analysis with on-chip magnetics allows device co-optimization for low voltage operation, despite 1000x lower inductance values than off-chip transformers. Co-optimized on-chip transformer and depletion-mode NMOS start up from 25 mV driven directly by a sourcemeter, or 50 mV with a 4.7 Omega series resistance, for the lowest integrated electrical startup. The co-packaged system provides proof of concept for integration with boost converter circuits on a single die to have a fully-integrated low voltage startup solution for thermal energy harvesting applications, without using off-chip transformers.

引用

页码：127 / 130

页数：4