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A Fully Integrated Switched-Capacitor DC-DC Converter with Dual Output for Low Power Application
 

Summary: A Fully Integrated Switched-Capacitor DC-DC Converter
with Dual Output for Low Power Application
-Bin Kim
Department of Electrical and Computer Engineering
Northeastern University
Boston, MA, USA
ABSTRACT
This paper presents a fully integrated on-chip switched-capacitor
(SC) DC-DC converter that support two regulated power supply
voltages of 2.2V and 3.2V from 5V input supply and deliver the
maximum load currents up to 8mA at both of the outputs. The
entire converter system uses two 2-to-1 converter blocks. The
upper output voltage (3.2V) is generated from 2-to-1_up converter
by means of averaging 5V input and the generated lower output
voltage (2.2V), which generated from 2-to-1_dw converter. Since
2-to-1_up converter is less sensitive to the bottom-plate parasitic
capacitance loss, they are implemented with MOS capacitors,
which show higher capacitance density (2.7fF/ m2
, =6.5%) than
MIM capacitors (1fF/ m2

  

Source: Ayers, Joseph - Marine Science Center & Department of Biology, Northeastern University

 

Collections: Engineering