Title :
High-frequency DC/DC converter for lithium-ion battery applications utilizes ultra-fast CBiC/D process technology
Author :
Williams, Richard K. ; Mohandes, Bijan ; Lee, Chae
Author_Institution :
Siliconix Inc., Santa Clara, CA, USA
Abstract :
Implementation of a 1-MHz switchmode control IC for DC-to-DC conversion in single-cell lithium ion (3- to 4.2-V) applications using an ultra-fast CBiC/D technology is demonstrated. The combination of low-threshold CMOS and high-speed bipolars (3 GHz NPN, 800 MHz PNP) is used to realize a high-speed comparator, 25-MHz error amplifier, and low propagation output delay output buffer at low operating currents. A low-profile, small footprint synchronous Buck converter with excellent ripple and transients response illustrates the benefits of operation at high clock rates
Keywords :
BiCMOS integrated circuits; DC-DC power convertors; MOSFET; field effect transistor switches; lithium; power MOSFET; secondary cells; switched mode power supplies; 1 MHz; 25 MHz; 3 GHz; 3 to 4.2 V; 800 MHz; Li-ion battery; delay output buffer; error amplifier; high clock rates; high-frequency DC/DC converter; high-speed bipolar transistors; high-speed comparator; lithium-ion battery applications; low operating currents; low propagation output; low-threshold CMOS; switchmode control IC; synchronous Buck converter; transients response; ultra-fast CBiC/D process technology; Application specific integrated circuits; Batteries; Cellular phones; DC-DC power converters; Lithium; Personal digital assistants; Space technology; Switched-mode power supply; Video equipment; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1995. APEC '95. Conference Proceedings 1995., Tenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2482-X
DOI :
10.1109/APEC.1995.468969
