Low Cost High Performance LED Driver Based on a Self-Oscillating Boost Converter

Bamgboje, David; Harmon, William; Tahan, Mohammad; Hu, Tingshu

doi:10.1109/tpel.2018.2890627

Cited by 22 publications

(8 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The DC-DC converter can convert a certain DC voltage into a different DC voltages. Battery-powered systems generally connect batteries in series to increase output voltage (Bamgboje et al, 2019;Nguyen et al, 2018). However, in many high-voltage applications, due to space constraints, it is impossible to connect lots of batteries in series to generate the required high voltage.…”

Section: Introductionmentioning

confidence: 99%

An Adaptive Control Strategy for a Low-Ripple Boost Converter in BLDC Motor Speed Control

Wang

Zhang

2021

Power Electronics and Drives

View full text Add to dashboard Cite

Conventional boost converters are widely used for connecting low-voltage power sources and inverters in motor control. However, a large filter capacitor bank is often used to reduce DC-link ripples that occur when an inverter is connected to a boost converter. Otherwise, significant voltage and current perturbations can impact on battery performance degradation and cause torque ripple, speed ripple and vibration in brushless DC (BLDC) motors. To suppress the converter’s DC-link ripple, this paper proposes a new control strategy for boost converter controller to generate low-ripple DC-link voltage or current at different motor speeds. In the proposed method, observers are designed to adaptively estimate the DC-link voltage and current harmonics. The harmonic terms are used as feedback signals to calculate the DC converter’s duty cycle. The entire control model is implemented on an embedded system, and its robustness is verified by simulation and experimental results that show the DC-link voltage and current ripples can be reduced by about 50% and 30%, respectively.

show abstract

Section: Introductionmentioning

confidence: 99%

An Adaptive Control Strategy for a Low-Ripple Boost Converter in BLDC Motor Speed Control

Wang

Zhang

2021

Power Electronics and Drives

View full text Add to dashboard Cite

show abstract

“…Step-up converters have been widely used in various applications such as uninterruptible power supplies, LED drivers, backlit TV LCDs, flash LEDs and audio amplifiers [1][2][3][4]. Among three categories of DC-DC step-up converters shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…This is because (1) RON of new-generation power switches (e.g. GaN HEMT [6]) and the equivalent series resistance (ESR) of capacitors are generally much smaller than the DCR of the inductor, (2) inductor stays in the input, which is the high current path of the CBOC. Second, the output voltage ripple is high because the current supplied to the load is discontinuous, requiring a large filtering capacitance CO to achieve low output ripple.…”

Section: Introductionmentioning

confidence: 99%

A Novel Minimum-Phase Dual-Inductor Hybrid Boost Converter with PWM Voltage-Mode Controller

Nguyen

Alameh

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

View full text Add to dashboard Cite

This paper presents a new dual-inductor hybrid boost converter (DI-HBOC) with two inductors located at the output. This structure allows continuous current delivered to the load, thus, reducing the output filtering capacitor size and the output voltage ripple. By relocating the inductor at the output, which is the lower current path, the conduction loss on the inductor can be significantly reduced. The right half plane zero (RHPZ) in the control-to-output transfer function can also be eliminated; therefore, a simple pulse-width modulation (PWM) voltage-mode controller can be used for the proposed DI-HBOC while still achieving high closed-loop bandwidth and fast transient response. The distinct features of the proposed converter are analytically demonstrated. A 12-to 24 V DI-HBOC and a conventional BOC (CBOC) using low-RON GaN switches with PWM voltage-mode controller are also implemented in PSIM for verification and comparison. The simulated peak power efficiency is 97.4 % that is 1.17 % higher than the CBOC. At 3 A load current, the power efficiency is improved by 9.7 % and the output ripple is only 17.5 mV, 6x lower than in CBOC.

show abstract

“…2 Boost converter, on the contrary, is employed in a step-up application. 3,4 Due to higher output voltage than the AC mains in the boost converter, more LEDs are required to be allied in series to achieve the desired output voltage. The buck-boost converter can operate both as a buck or boost functionality.…”

Section: Introductionmentioning

confidence: 99%

Constant DC‐bus critical conduction mode Zeta converter fed primary‐side regulated LLC resonant converter in LED lighting applications

Pal

Singh

Shrivastava

2021

Circuit Theory & Apps

View full text Add to dashboard Cite

This paper deals with a two-stage high-power light-emitting diode (LED) driving solution for an isolated LED load. The first-stage DC-DC power conversion is using a nonisolated Zeta converter operating in critical conduction mode to reduce component stress and switching power loss. This power stage is accountable for the power factor correction (PFC) under the universal AC voltage operation and developed a constant DC-bus voltage for the second stage. In the second stage, half-bridge LLC resonant converter is dedicated to deliver ripple-free DC voltage to an isolated LED load. A new primary-side regulation (PSR) technique is implemented in series with the resonant tank to reduce the component counts in the feedback loop. The stability of the DC-bus voltage is verified by the state-space analysis for the critical conduction mode (CrCM) Zeta converter. A 150 W load is driven by a prototype with a nearly unity power factor (PF) and low harmonics distortion in the input current.

show abstract

Low Cost High Performance LED Driver Based on a Self-Oscillating Boost Converter

Cited by 22 publications

References 26 publications

An Adaptive Control Strategy for a Low-Ripple Boost Converter in BLDC Motor Speed Control

An Adaptive Control Strategy for a Low-Ripple Boost Converter in BLDC Motor Speed Control

A Novel Minimum-Phase Dual-Inductor Hybrid Boost Converter with PWM Voltage-Mode Controller

Constant DC‐bus critical conduction mode Zeta converter fed primary‐side regulated LLC resonant converter in LED lighting applications

Contact Info

Product

Resources

About