Design of Buck Converter with Dead-time Control and Automatic Power-Down System for WSN Application

Hora, Jefferson A.; Arellano, Aileen Chris; Zhu, Xi; Dutkiewicz, Eryk

doi:10.1109/wptc45513.2019.9055685

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…To ensure that the system operates properly, a delay circuit is used to manage the dead time between switching events. The resulting clocks drive the power switches via the drivers to achieve the buck effect [36]. The driver circuit, depicted in Figure 11, generates VPS and VNS to drive the excessive gate capacitance induced by the size of the power switches.…”

Section: Non-overlapping Clocks Generator and Driver Circuitsmentioning

confidence: 99%

An on-chip soft-start pseudo-current hysteresis-controlled buck converter for automotive applications

Boutaghlaline,

El Khadiri,

Tahiri

2024

IJECE

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This paper introduces a novel direct current to direct current (DC-DC) buck converter that uses a pseudo-current hysteresis controller and an on-chip soft start circuit for improved transient performance in automotive applications. The proposed converter, implemented with Taiwan semiconductor manufacturing company (TSMC) 0.18 µm complementary metal oxide semiconductor (CMOS) one-poly-six-metal (1P6M) technology, includes a rail-to-rail current detection circuit and an on-chip soft start circuit to handle transient responses and improve efficiency. Transient response analysis shows fast settling times of 28 µs for both load current changes from 100 mA to 1 A and reversals with consistent transient voltages of approximately 190 mV and peak power efficiency of 99.32% at 5 V output voltage and 100 mA load current. Additionally, the converter maintains a constant output voltage of approximately 5 V across the entire load current range with an average accuracy of 90.41%. A comparative analysis with previous work shows superior performance in terms of figure of merit (FOM). Overall, the proposed pseudo-current hysteresis controlled buck converter exhibits remarkable transient response, load regulation and power efficiency, positioning it as a promising solution for demanding applications, particularly in automotive systems where precise voltage regulation is crucial.

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Section: Non-overlapping Clocks Generator and Driver Circuitsmentioning

confidence: 99%

An on-chip soft-start pseudo-current hysteresis-controlled buck converter for automotive applications

Boutaghlaline,

El Khadiri,

Tahiri

2024

IJECE

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show abstract

“…The power transistors of the boost converter, carry a high current. Still, when the P-channel and N-channel power switches are switched on together, they could potentially burn out as the voltage source is short-circuited to the ground [23]. To separate the two power switches' on-times and interleave the Vduty produced through the hysteresis controller, the non-overlapping clocks generator circuit is employed.…”

Section: Non-overlapping Clocks Generator Circuitmentioning

confidence: 99%

An improved transient performance boost converter using pseudo-current hysteresis control

Boutaghlaline,

El Khadiri,

Tahiri

2023

Bulletin EEI

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This paper introduces an enhanced low transient voltage and fast transient response boost converter. It uses a hysteresis-controlled circuit fed by a voltage signal from a rail-to-rail current sensor, resulting in improved efficiency, and transient response. The converter is designed using Taiwan semiconductor manufacturing company (TSMC) 0.18 µm CMOS 1P6M technology, delivers an output voltage of 1.8 V while operating with an input voltage range of 0.5 V to 1 V and supports an output load current range of 10 to 100 mA. The key contributions of this paper are: i) introducing a new boost converter architecture employing pseudo-current hysteresis-controlled (PCHC) techniques, ii) incorporating voltage and current loops into the proposed architecture, and iii) demonstrating superior transient performance. Experimental measurements reveal a peak power efficiency of 98.6% at 10 mA and transient times of 15.4 µs and 11.8 µs for a step load change from 10 to 100 mA and back to 10 mA, respectively, with transient voltages of 51 mV. The presented boost converter outperforms in terms of performance, compared to previous works using the figure of merit (FOM) formula.

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An Active Dead-Time Control Circuit With Timing Elements for a 45-V Input 1-MHz Half-Bridge Converter

Karimi

Ali

Hassan

et al. 2022

IEEE Trans. Circuits Syst. I

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In this study, a dead-time control circuit is proposed to generate independent delays for the high and low sides of halfbridge converter switches. In addition to greatly decreasing the losses of power converters, the proposed method mitigates the shoot-through current through the application of superimposed power switches. The circuit presented here comprises a switched capacitor architecture and is implemented in AMS 0.35 µm technology. In the implementation, the proposed dead-time control circuit occupies a silicon area of 70 µm × 180 µm. To realize the technique, a two-sided wide swing current source is employed. Each sides of the current source comes with two capacitors, two Schmitt triggers, and three transmission gates. Results show that the low and high sides of the projected half-bridge converter switches respectively require delays of 35 and 62 ns. The performance of the proposed dead-time circuit is evaluated by assembling it with the half-bridge converter. The proposed dead-time prototype achieves a 40% drop in power losses in the half-bridge circuit.

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Design of Buck Converter with Dead-time Control and Automatic Power-Down System for WSN Application

Cited by 4 publications

References 20 publications

An on-chip soft-start pseudo-current hysteresis-controlled buck converter for automotive applications

An on-chip soft-start pseudo-current hysteresis-controlled buck converter for automotive applications

An improved transient performance boost converter using pseudo-current hysteresis control

An Active Dead-Time Control Circuit With Timing Elements for a 45-V Input 1-MHz Half-Bridge Converter

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