RT Journal Article
A1 Lei Wang
A1 Qian Wu
A1 Yang Gu
A1 Changyuan Chang
A1 Chang Chen

PB iet
T1 Design of a high-precision constant voltage flyback converter
JN IET Circuits, Devices & Systems
VO 14
IS 8
SP 1145
OP 1152
AB A small-signal model is established for the basic constant voltage (CV) flyback converter firstly. Then the phase margin and the bandwidth, which can reflect the system stability and rapidity, are deduced through transfer function. The parameters affecting the stability of the system can be obtained by the model's derivation to confirm the appropriate external capacitance value. To improve the precision of CV, the compensation of cable is implemented through the module of irrigation current, pulling down the output voltage under any load conditions to the value of it with the maximal load. The prototype for the proposed CV converter has been fabricated in an MXIC 0.8 μm L80A1 process. The minimal static power consumption measured by a test is only 40 mW. In the CV mode, the precision of the output voltage can reach the level of ±1.5%. Therefore, the proposed control chip has a promising application in low power CV AC–DC flyback converter.
K1 MXIC L80A1 process
K1 low power CV AC–DC flyback converter
K1 static power consumption
K1 size 0.8 mum
K1 cable compensation
K1 power 40.0 mW
K1 system stability
K1 control chip
K1 small-signal model
K1 external capacitance value
K1 transfer function
K1 high-precision constant voltage flyback converter
DO https://doi.org/10.1049/iet-cds.2020.0011
UL https://digital-library.theiet.org/;jsessionid=3qw9c9s690x0q.x-iet-live-01content/journals/10.1049/iet-cds.2020.0011
LA English
SN 1751-858X
YR 2020
OL EN