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- Title
Current estimation circuit for discontinuous conduction mode flyback pulse-width modulation controller.
- Authors
Ling-Feng Shi; Yi-Ming Qi
- Abstract
Primary-side controlled flyback converter has been widely used in low-power and low-voltage products for its simple structure and low cost. As most applications require constant-current control, it is important for the integrated circuit to detect and express the output current accurately. This study proposes a novelty current detection and estimation circuit for primary-side controlled flyback controller. The circuit transmits the output current to voltage linearly with low power consumption and small layout area. Finally, a chip based on 0.6 µm complementary metal- oxide semiconductor process is fabricated using the current detection and estimation circuit in its constant-current loop to achieve constant output current.
- Subjects
ELECTRIC circuits; ELECTRIC conductivity; PULSE width modulation; VOLTAGE control; ENERGY consumption
- Publication
IET Power Electronics (Wiley-Blackwell), 2015, Vol 8, Issue 7, p1217
- ISSN
1755-4535
- Publication type
Article
- DOI
10.1049/iet-pel.2014.0358