An 86% efficiency SIMO DC-DC converter with one boost, one buck, and a floating output voltage for car-radio

Salimath, Arunkumar; Bonizzoni, Edoardo; Botti, E.; Gonano, G.; Cacciagrano, Paolo; Brambilla, D.; Barbieri, Tommaso; Maloberti, Franco

doi:10.1109/isscc.2018.8310366

Cited by 14 publications

(2 citation statements)

References 3 publications

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“…Otherwise, CR appears in CH 2 . A solution of CR reduction is to use CBC [1, 2]

({, \begin{aligned} \sum_{n = 1}^{N} i_{c (⟩⟨, n)} = i_{normalLA} \\ d_{(⟩⟨, n)} |_{n \in falsefalse{1, N - 1 falsefalse}} = \frac{i_{c (⟩⟨, n)}}{i_{normalLA}}; d_{⟨n⟩} = 1 - {false\sum}_{n = 1}^{N - 1} d_{(⟩⟨, n)} \end{aligned})

where i c〈 n 〉 is control signal of CH 〈 n 〉 . However, when considering inductor current sensing error i os and dynamic tracking error i err , the instant output current of CH N is rewritten as

i_{o N} = d_{N} \cdot i_{normalLA} = \frac{i_{normalLA} - \sum_{n = 1}^{N - 1} i_{normalc ⟨n⟩}}{i_{normalLA} + i_{normalos}} \cdot i_{LA} = \frac{i_{normalc N} - i_{err}}{i_{LA} + i_{os}} i_{normalLA} \neq i_{c N}

…”

Section: Existing Methodsmentioning

confidence: 99%

Single‐inductor multiple‐output DC–DC converter with duty‐cycle‐constrained comparator control

Chen

Leung

et al. 2019

Electron. lett.

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An auto-buck-boost single-inductor multiple-output (SIMO) dc-dc converter with duty-cycle-constrained comparator control is presented in this Letter. Combined both comparator-based and duty-cycle-constrained controllers enable the dc-dc converter attaining fast transient response and low cross-regulation (CR). The proposed algorithm is independent of the precision of current sensor and suppresses CR robustly with the proposed tri-feedback loop control of comparatorbased voltage control, duty-cycle-constrained distribution and average current control. The proposed scheme is suitable for autobuck-boost SIMO dc-dc converter design for dynamic voltage scaling applications.

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“…Otherwise, CR appears in CH 2 . A solution of CR reduction is to use CBC [1, 2]

({, \begin{aligned} \sum_{n = 1}^{N} i_{c (⟩⟨, n)} = i_{normalLA} \\ d_{(⟩⟨, n)} |_{n \in falsefalse{1, N - 1 falsefalse}} = \frac{i_{c (⟩⟨, n)}}{i_{normalLA}}; d_{⟨n⟩} = 1 - {false\sum}_{n = 1}^{N - 1} d_{(⟩⟨, n)} \end{aligned})

i_{o N} = d_{N} \cdot i_{normalLA} = \frac{i_{normalLA} - \sum_{n = 1}^{N - 1} i_{normalc ⟨n⟩}}{i_{normalLA} + i_{normalos}} \cdot i_{LA} = \frac{i_{normalc N} - i_{err}}{i_{LA} + i_{os}} i_{normalLA} \neq i_{c N}

…”

Section: Existing Methodsmentioning

confidence: 99%

Single‐inductor multiple‐output DC–DC converter with duty‐cycle‐constrained comparator control

Chen

Leung

et al. 2019

Electron. lett.

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show abstract

“…The cross-regulation will be more significant at heavy load conditions because the controllers were designed to handle crossregulations only up to a certain current level, and the interruption in control timing and current delivery will result in larger voltage fluctuations. As a result, the maximum output current capacity per output for SIMO converters is limited typically well below 1 A [1][2][3][4][5][6][7][8].…”

mentioning

confidence: 99%

Voltage‐mode hysteretic control techniques for high‐current single‐inductor multiple‐output switching regulators

Huang¹,

Lee²

2020

Electron. lett.

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In this Letter, two comparator-based voltage-mode hysteretic controller designs are proposed to enhance dynamic response for single-inductor multiple-output (SIMO) switching converters to minimise over-/ under-shoot voltages due to self-and cross-regulations in fast load transients, especially with high output power and large current steps. The proposed converters are designed and simulated in a 65 nm CMOS process with standard I/O devices. With the proposed techniques, the output voltage fluctuations, including steady-state voltage ripples and over-/under-shoot voltages due to self-and crossregulations during a 1.8 A load transient in 1 ns, are kept within 60 mV. The proposed converter delivers more than 3 A maximum load current per output and a maximum total output power above 6 W, with a peak efficiency above 90%. Compared to state-of-the-art SIMO converters, this work achieves a significantly higher output power capacity and faster dynamic response thus smaller self-and cross-regulations within 0.033 mV/mA.

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91.282% Efficiency SIDO Buck-Buck Converter with Separate Positive and Negative Output Voltage in 40 nm CMOS Process

Lee

Chang

2023

2023 IEEE International Symposium on Circuits and Systems (ISCAS)

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An 86% efficiency SIMO DC-DC converter with one boost, one buck, and a floating output voltage for car-radio

Cited by 14 publications

References 3 publications

Single‐inductor multiple‐output DC–DC converter with duty‐cycle‐constrained comparator control

Single‐inductor multiple‐output DC–DC converter with duty‐cycle‐constrained comparator control

Voltage‐mode hysteretic control techniques for high‐current single‐inductor multiple‐output switching regulators

91.282% Efficiency SIDO Buck-Buck Converter with Separate Positive and Negative Output Voltage in 40 nm CMOS Process

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