Open AccessFast‐transient DC–DC converter with hysteresis prediction voltage control
Author(s) -
Liu PangJung,
Lai YuMin,
Lee PingChieh,
Chen HsinShu
Publication year - 2017
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2016.0382
Subject(s) - ringing , transient (computer programming) , transient response , control theory (sociology) , voltage , pulse width modulation , capacitor , forward converter , boost converter , computer science , electronic engineering , electrical engineering , engineering , control (management) , filter (signal processing) , artificial intelligence , operating system
This study presents a hysteresis prediction voltage control (HPVC) technique based on a predictive control method with early actions to solve ringing circumstances and to alleviate transient ripples. A dc–dc converter switches from a voltage‐controlled pulse width modulation mode to the proposed HPVC mode during transient. Hence, the dc–dc converter has a fast transient response when its load current varies. The converter also keeps constant switching frequency during the steady state. The ringing, recovery time and transient ripples can be effectively reduced without paying a price of increasing the output capacitor of the power converter. A prototype chip with the proposed HPVC technique was implemented in a 0.35‐µm CMOS technology. The experimental results show that the recovery time is less than 10 µs for a 400‐mA load current change.