Authentic mode-toggled detector with fast transient response under wide load range buck-boost converter
- Resource Type
- Conference
- Authors
- Lin, Moris; Huang, Yung-Sheng; Ehrhart, Andreas; Lee, Yu-Huei; Chiu, Chao-Chang; Wicht, Bernhard; Chen, Ke-Horng
- Source
- 2013 IEEE International Symposium on Circuits and Systems (ISCAS) Circuits and Systems (ISCAS), 2013 IEEE International Symposium on. :2952-2955 May, 2013
- Subject
- Components, Circuits, Devices and Systems
Transient analysis
Pulse width modulation
Transient response
Switches
Inductors
Clocks
Detectors
Buck-Boost converter
DC-DC converter
authentic mode-toggled detector
fast load and line transient response
- Language
- ISSN
- 0271-4302
2158-1525
An authentic mode-toggled detector (AMTD) technique is proposed to achieve load and line regulations in a proposed buck-boost (BB) converter. In the case of load transient, conventional BB converter will oscillate and cannot settle to a wellregulated output voltage owing to the on-resistance of the power MOSFETs. Accurate and expeditious mode-toggled detection in the BB converter meet the requirements of load and line transient response by means of the proposed adaptively near-immediate freezer (ANIF) technique. Besides, due to pulse frequency modulation (PFM) implemented in the proposed BB converter, ultra wide load range from 10mA to 900mA can have high efficiency from 80% to 95%. Simulation results show the proposed BB converter fabricated in VIS 0.25μm process can be wellregulated under the input voltage ranging from 2.7V to 4.2V.