High performance multiple string LED driver with flexible and wide range PWM dimming capability

Tahan, Mohammad; Hu, Tingshu

doi:10.1109/apec.2017.7930908

Cited by 5 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The time multiplex switching scheme applied in a boost converter in [19][20][21] will be adopted to regulate output voltages of flyback converter. An isolation switch is required for each channel which operates at a lower switching frequency than the main switch of the boost converter and isolates the corresponding output from other channels, during charging periods.…”

Section: Configuration Derivationmentioning

confidence: 99%

Flyback-Based Multiple Output dc-dc Converter with Independent Voltage Regulation

Tahan

Bamgboje

2018

2018 9th IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

Self Cite

View full text Add to dashboard Cite

This paper proposes a new single input multiple output power supply by integrating a flyback converter and several buck converters. The flyback converter works as the main regulator, and the buck converters provide series voltage compensation with the aim of tight regulation. A time multiplexing switching scheme is proposed to deliver multiple output voltage levels via a two winding transformer and to eliminate the cross regulation between output channels. This configuration reduces the size of flyback transformer and filter capacitors, and consequently improves the overall form factor. A detailed steady state analysis is conducted on the circuit to obtain the design criteria. A three output channel power supply is designed and the effectiveness of the proposed configuration is validated via simulation with a MATLAB/Simscape model. Simulation results also demonstrate satisfactory transient response to load changes.

show abstract

Section: Configuration Derivationmentioning

confidence: 99%

Flyback-Based Multiple Output dc-dc Converter with Independent Voltage Regulation

Tahan

Bamgboje

2018

2018 9th IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG)

Self Cite

View full text Add to dashboard Cite

show abstract

“…A new hybrid configuration will be proposed in this paper, which utilizes a flyback converter as the main converter to reach the rated voltage and an additional small SIMO buck converter to reduce output voltage deviations. In this work, a time-multiplex switching scheme as reported in [15,16], is employed to regulate multiple outputs by using only a three-winding SMPS transformer. This will serve to reduce the overall converter footprint, as well as to eliminate the cross-regulation issue.…”

Section: Introductionmentioning

confidence: 99%

Compensated Single Input Multiple Output Flyback Converter

Tahan

Bamgboje

2021

Energies

View full text Add to dashboard Cite

A new single-input multiple-output (SIMO) converter is proposed in this work by incorporating flyback and buck converters in a master–slave configuration. The objective of this work is to address the cross regulation problem, achieve tight voltage regulation, improve the circuit form factor and attain a fast transient response for a SIMO flyback converter. The flyback converter maintains the output channels within 10% of their rated voltages and the SIMO buck converter is placed in series with the flyback converter such that it compensates for the output voltage deviation. Moreover, a time multiplexing switching scheme decouples output channel to eliminate the cross-regulation problem and remove the need for an additional winding transformer per each output channel. A type II compensator with a peak current mode controller was designed to achieve faster transient response which is critical for the proposed configuration. A thorough steady-state analysis was carried out on a triple output channel topology to obtain the design criteria and component values. MATLAB/Simscape modelling and simulation was used to validate the effectiveness of the proposed converter with the result yielding satisfactory transience even with load disturbance. Additionally, the result of the proposed converter is compared with previously published works.

show abstract