Output capacitor comparison for low voltage high current applications

The digital IC such as microprocessor requires low voltage, high current as well as very tight transient regulation. This imposes strict requirement for the power supply-typically a step down PWM converters with single phase or multiphase. The output capacitors play an important role in the transien...

Full description

Saved in:
Bibliographic Details
Main Authors: Qiao, C., Zhang, J., Parto, P., Jauregui, D.
Format: Conference Proceeding
Language:English
Subjects:
Aluminum
Applied sciences
Capacitors
Capacitors. Resistors. Filters
Design. Technologies. Operation analysis. Testing
Digital integrated circuits
Electrical engineering. Electrical power engineering
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Integrated circuits
Integrated circuits by function (including memories and processors)
Low voltage
Microprocessors
Nonhomogeneous media
Polymers
Power supplies
Pulse width modulation converters
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Transient response
Various equipment and components
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The digital IC such as microprocessor requires low voltage, high current as well as very tight transient regulation. This imposes strict requirement for the power supply-typically a step down PWM converters with single phase or multiphase. The output capacitors play an important role in the transient response. Many types of capacitors are available in the market such as aluminum electrolytic, tantalum, POSCAP, OSCON cap, Specialty polymer, as well as large value of multilayer ceramic capacitors. This paper derives a basic equation to calculate the minimum number of capacitors in order to meet the transient requirement. Based on this information, a compromise between cost and performance can be decided by engineers.
ISSN:0275-9306
2377-6617
DOI:10.1109/PESC.2004.1355820