Study and Analysis of a Battery-Powered High Step-Up Front-End Converter for Automotive Audio Amplifier

Lai, Ching-Ming; Lee, Yun-Hsiu; Lin, Yuan-Chih; Ku, Chao-Wei

doi:10.1109/vppc.2016.7791784

Cited by 6 publications

(2 citation statements)

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“…High boost DC/DC (direct current to direct current) voltage conversions are indispensable in a power electronic interface of certain low-voltage DC-powered electrical devices, including audio amplifiers [1][2][3][4][5][6][7], high intensity discharge (HID) lamps [8][9][10][11][12][13][14], uninterruptible power supplies (UPS) [15][16][17][18][19], and electric vehicle systems [20][21][22][23][24][25][26][27][28][29][30][31][32]. For such high voltage gain application, the conventional boost converter have to works for extremely wide duty cycle which increases power consumption and has low reliability problems [32,33].…”

Section: Introductionmentioning

confidence: 99%

“…While the low ripple characteristics that benefit from interleaved structures, this simpler and lower cost topology can also give an improved voltage gain when comparing to a conventional interleaved boost converter with two phases. A partial study and analysis of a battery-powered combined boost converter for automotive audio amplifiers was presented in [7], but only a brief concept was described therein. By contrast, this paper introduces a detailed analysis of the operation of this new topology and simulated and experimented results for all its modes of operation.…”

Section: Introductionmentioning

confidence: 99%

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A New Combined Boost Converter with Improved Voltage Gain as a Battery-Powered Front-End Interface for Automotive Audio Amplifiers

et al. 2017

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High boost DC/DC voltage conversion is always indispensable in a power electronic interface of certain battery-powered electrical equipment. However, a conventional boost converter works for a wide duty cycle for such high voltage gain, which increases power consumption and has low reliability problems. In order to solve this issue, a new battery-powered combined boost converter with an interleaved structure consisting of two phases used in automotive audio amplifier is presented. The first phase uses a conventional boost converter; the second phase employs the inverted type. With this architecture, a higher boost voltage gain is able to be achieved. A derivation of the operating principles of the converter, analyses of its topology, as well as a closed-loop control designs are performed in this study. Furthermore, simulations and experiments are also performed using input voltage of 12 V for a 120 W circuit. A reasonable duty cycle is selected to reach output voltage of 60 V, which corresponds to static voltage gain of five. The converter achieves a maximum measured conversion efficiency of 98.7% and the full load efficiency of 89.1%.

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