DocumentCode :
1313044
Title :
Current Mode Control for Boost Converters With Constant Power Loads
Author :
Li, Yushan ; Vannorsdel, Kevin R. ; Zirger, Art J. ; Norris, Mark ; Maksimovic, Dragan
Author_Institution :
Nat. Semicond., Longmont, CO, USA
Volume :
59
Issue :
1
fYear :
2012
Firstpage :
198
Lastpage :
206
Abstract :
This paper describes how current mode control provides active damping for boost converters with constant power loads. Small-signal control-to-output transfer functions are derived for peak or valley current mode controlled boost converter with a downstream regulated converter modeled as constant power load. Furthermore, it is shown how load current feedforward presents an effective way to improve power load transient responses. Modeling and design approaches are validated by test circuit simulations, demonstrating stable operations using current mode control under constant power loads, and improved power step load transient responses based on load current feedforward.
Keywords :
current-mode circuits; power convertors; transient response; active damping; constant power loads; design approach; downstream regulated converter; load current feedforward; modeling approach; power load transient response; power step load transient response; small-signal control-to-output transfer function; test circuit simulation; valley current mode controlled boost converter; Damping; Feedforward neural networks; Impedance; Inductors; Load modeling; Transfer functions; Voltage control; Active damping; RHP pole; constant power load (CPL); current mode control (CMC); load current feedforward; negative impedance instability; peak CMC (PCMC); valley CMC (VCMC);
fLanguage :
English
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-8328
Type :
jour
DOI :
10.1109/TCSI.2011.2161364
Filename :
6008524
Link To Document :
بازگشت