Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling

Tan, Siew‐Chong; Nur, M.; Kiratipongvoot, Sitthisak; Bronstein, S.; Lai, Y. M.; Tse, Chi Kong; Ioinovici, A.

doi:10.1109/iscas.2009.5117947

Cited by 32 publications

(18 citation statements)

References 6 publications

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“…And substituting (15) in (20) the ratio between the voltage across C 2 and the input voltage becomes.…”

Section: Amentioning

confidence: 99%

“…Converters without coupled inductors based on pure SC circuits have found applications in low power on-chip applications, but at larger power levels solutions based on traditional converters have been preferred due to the number power semiconductors required, current spikes among capacitors, and high switching frequency limitations. The interleaving of SC circuits has also been proposed as a solution for high voltage gain [20]- [22]. A number of power converters for higher power application that eliminate the use of coupled inductors or transformers have been proposed [1]- [5], [23]- [27].…”

Section: Introductionmentioning

confidence: 99%

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A hybrid interleaved/switched-capacitor boost converter

Rosas-Caro

Torres-Espinosa

Mancilla–David

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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This paper proposes a boost dc-dc converter topology with the capability of canceling the input current ripple at an arbitrarily preselected duty cycle, high-voltage gain without utilizing extreme values of duty cycle or boosting transformers, it contains a switched-capacitor structure in which the current among capacitors is continuous. The paper provides details on the principle of operation via topological considerations and a mathematical model. The key factor of reactive components sizing is also discussed. The converter was validated in the laboratory through the construction of a hardware prototype.

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“…And substituting (15) in (20) the ratio between the voltage across C 2 and the input voltage becomes.…”

Section: Amentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A hybrid interleaved/switched-capacitor boost converter

Rosas-Caro

Torres-Espinosa

Mancilla–David

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

View full text Add to dashboard Cite

show abstract

“…According to (13) or (14a), it is obvious that 3,8 ( n, p ) is rising when V o is selected closer to 8· V S ( p · V S ). In the three-stage 8x MPSC, it is good for the efficiency to choose V o be close to 8· V S as much as possible.…”

Section: Power Efficiency and Vpcmentioning

confidence: 99%

“…In 2003, Chang proposed an integrated step-up/down SC converter [10,11]. Recently, Axelrod et al suggested a hybrid SC/inductor converter [12], and Tan et al proposed a low-EMI SC by interleaving control [13]. However, Ioinovici SC has the voltage gain proportional to the number of pumping capacitors.…”

Section: Introductionmentioning

confidence: 99%

Multistage multiphase switched‐capacitor DC–DC converter with variable‐phase and PWM control

Chang

Chen

2011

Circuit Theory & Apps

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SUMMARYA closed-loop multistage multiphase switched-capacitor converter (n-stage p-phase MPSC) is proposed with a variable-phase control (VPC) and a pulse-width-modulation (PWM) technique for low-power stepup conversion and high-efficiency regulation. In this n-stage MPSC, n voltage doublers are connected in series for boosting the voltage gain up to 2 n at most. Here, VPC is suggested to realize a variable multiphase operation by changing the phase number p and topological path for the more suitable level of voltage gain so as to improve the power efficiency, especially for the lower output voltage Besides, PWM is adopted not only to enhance output regulation for different desired outputs, but also to reinforce output robustness to source/loading variation. Further, some theoretical analyses and designs include: n-stage p-phase MPSC model, steady-state analysis, conversion ratio, power efficiency, output ripple, stability, capacitance selection, and control design. Finally, the closed-loop MPSC is simulated, and the hardware is implemented and tested. All the results are illustrated to show the efficacy of the proposed scheme.

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“…Following this, Chang proposed an integrated scheme of SC step-up/down DC-DC/DC-AC converter [15,16]. Recently, Axelrod et al suggested a hybrid SC/inductor converter [17], and Tan et al proposed a low-EMI SC by interleaving control [18]. However, Ioinovici SC provides voltage gain proportional to the number of pumping capacitors.…”

Section: Introductionmentioning

confidence: 99%

Three‐stage multiphase‐switched‐capacitor boost DC‐AC inverter

Chang

Luo

2011

Circuit Theory & Apps

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SUMMARYA closed-loop scheme of a three-stage multiphase-switched-capacitor boost DC-AC inverter (MPSCI) is proposed by combining the multiphase operation and sinusoidal-pulse-width-modulation (SPWM) control for low-power step-up DC-AC conversion and regulation. In this MPSCI, the power unit contains two parts: MPSC booster (front) and H-bridge (rear). The MPSC booster is suggested for an inductor-less step-up DC-DC conversion, where three voltage doublers in series are controlled with multiphase operation for boosting voltage gain up to 2 3 = 8 at most. The H-bridge is employed for DC-AC inversion, where four solid-state switches in H-connection are controlled with SPWM to obtain a sinusoidal AC output. In addition, SPWM is adopted for enhancing output regulation not only to compensate the dynamic error, but also to reinforce robustness to source/loading variation. The relevant theoretical analysis and design include: MPSCI model, steady-state/dynamic analysis, voltage conversion ratio, power efficiency, stability, capacitance selection, total harmonic distortion (THD), output filter, and closed-loop control design. Finally, the closed-loop MPSCI is simulated, and the hardware circuit is implemented and tested. All the results are illustrated to show the efficacy of the proposed scheme.

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Switched-capacitor converter configuration with low EMI emission obtained by interleaving and its large-signal modeling

Cited by 32 publications

References 6 publications

A hybrid interleaved/switched-capacitor boost converter

A hybrid interleaved/switched-capacitor boost converter

Multistage multiphase switched‐capacitor DC–DC converter with variable‐phase and PWM control

Three‐stage multiphase‐switched‐capacitor boost DC‐AC inverter

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