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High-performance error amplifier for fast transient DC-DC converters
- Authors
- Roh, Jeongjin
- Issue Date
- Sep-2005
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- boost converter; dc-dc converter; error amplifier; operational transconductance amplifier (OTA); pulsewidth modulation (PWM); transient response
- Citation
- IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, v.52, no.9, pp.591 - 595
- Indexed
- SCIE
SCOPUS
- Volume
- 52
- Number
- 9
- Start Page
- 591
- End Page
- 595
- ISSN
- 1549-7747
- Abstract
- A new error amplifier is presented for fast transient response of dc-dc converters. The amplifier has low quiescent current to achieve high power conversion efficiency, but it can supply sufficient current during large-signal operation. Two comparators detect large-signal variations, and turn on extra current supplier if necessary. The amount of extra current is well controlled, so that the system stability can be guaranteed in various operating conditions. The simulation results show that the new error amplifier achieves significant improvement in transient response than the conventional one.
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Related Researcher
- Roh, Jeong jin
- ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)