Details

Autor(en) / Beteiligte

• Meyvaert, Hans
• Villar Pique, Gerard
• Karadi, Ravi
• Bergveld, Henk Jan
• Steyaert, Michiel S. J.

Titel

A Light-Load-Efficient 11/1 Switched-Capacitor DC-DC Converter With 94.7% Efficiency While Delivering 100 mW at 3.3 V

Ist Teil von

• IEEE journal of solid-state circuits, 2015-12, Vol.50 (12), p.2849-2860

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2015

Link zum Volltext

• Volltext

Quelle

IEEE Xplore

Beschreibungen/Notizen

• This paper demonstrates a 2-phase 11/1 switched-capacitor (SC) DC-DC converter that provides an output voltage VOUT of 3.3 V from an input voltage VIN in the range of 37.4 V-39 V . SC converters, unlike their inductive buck counterparts, do not rely on the pulse-width modulation (PWM) duty cycle to set the voltage conversion ratio (VCR) as this is determined by the SC converter topology. Consequently, SC DC-DC converters do not require a very low duty cycle, resulting in a short ton for the full-input-voltage-rated high-side switch and significant driver power consumption. Instead, a two-phase SC converter is found to be an excellent candidate for high-ratio voltage conversion as it maintains a 50% duty cycle and exchanges few components of high voltage rating with more that are rated for lower voltage.