A near-zero cross-regulation single-inductor bipolar-output (SIBO) converter with an active-energy-correlation control for driving cholesteric-LCD

IEEE Trans. Power Electron.

et al. 2016

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this paper proposes a high efficiency Class-D amplifier (CDA) with embedded singleinductor bipolar output (SIBO) power module. The characteristics of SIBO converter's bipolar outputs not only suppress equivalent common mode noise but also remove several large external bulky components in conventional boost supply CDA systems. Since bipolar outputs in the SIBO provide independent driving capability, CDA is capable to operate in both single-ended (SE) and bridge-tide load (BTL) configurations. Furthermore, the proposed dynamic voltage boosting (DVB) technique adjusts the SIBO output voltage level according to the CDA's output level with 5% power efficiency improvement. Peak total harmonic distortion plus noise (THD+N) performance is 0.012%. Peak power efficiency of SIBO and CDA are 89% and 93.2%, respectively.

Section: A Normal Conditionmentioning

confidence: 95%

“…Fig. 6 shows the proposed SIBO converter to generate positive and negative output voltages [18]. The proposed SIBO converter is composed of one diode, three power switches and only one external inductor to form four different energy delivery paths from battery to the bipolar outputs.…”

Section: Proposed Sibo Power Modulementioning

confidence: 99%

Embedded Single-Inductor Bipolar-Output DC–DC Converter in Class-D Amplifier for Low Common Noise

Chen

IEEE Trans. Power Electron.

et al. 2016

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“…By comparing V epn and V ep with V sum , the inductor charging period (path-I) and discharging period (path-II and path-III) are determined. And then both outputs in the SIBO converter can receive energy, E op and E on , respectively [3].…”

Section: Structure and Control Scheme Of Sibo (A) Energy Delievery Comentioning

confidence: 99%

P‐56: A Single‐Inductor Bipolar‐Output DC/DC Converter with High Efficiency Over Wide Load Range for Active Matrix OLED

Symp Digest of Tech Papers

Huang

et al. 2014

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This paper proposes a single-inductor bipolar-output (SIBO) switching converter with high efficiency over a wide load range for active matrix organic light-emitting diode (AMOLED) display. The SIBO converter provides a pair of positive and negative output voltages with only one external inductor. The proposed burst mode function can enhance the light load efficiency with low output ripples, 25mV and 10mV for positive and negative voltages, respectively. With the smooth start-up function, the inductor current can rise smoothly and have low peak value, reducing the current stress on inductor and power MOSFETs. The efficiency can be maintained higher than 80% with the load current from 20mA to 140mA. At light loads, the efficiency is higher than 60% when the load current is above 5mA. The maximum efficiency is 88% when the input voltage is 3.7V and the load current is 60mA.

“…Fig. 3 shows the proposed SIBO converter to generate positive and negative output voltages only with one external inductor [6]. More importantly, two bipolar outputs are allowed to have different loading currents for fitting CDA characteristics.…”

Section: B Proposed Sibo Power Modulementioning

confidence: 99%

“…On the other hand, In a BTL configuration, the loading on the positive and negative loads will be more equilibrium. Thus, the bipolar (BIP) mode can fairly deliver energy to both outputs at the same time [6].…”

Section: B Proposed Sibo Power Modulementioning

confidence: 99%

A Class-D amplifier powered by embedded single-inductor bipolar-output power module with low common noise and dynamic voltage boosting technique

Chen

ESSCIRC 2014 - 40th European Solid State Circuits Conference (ESSCIRC)

et al. 2014

Self Cite

This paper proposes a high efficiency Class-D amplifier (CDA) with embedded single-inductor bipolar output (SIBO) power module. The characteristics of SIBO converter's bipolar outputs not only suppress equivalent common mode noise but also remove several large external bulky components in conventional boost supply CDA systems. Since bipolar outputs in the SIBO provide independent driving capability, CDA is capable of operating in both single-ended (SE) and bridge-tide load (BTL) configurations. Furthermore, the proposed dynamic voltage boosting (DVB) technique adjusts the SIBO output voltage level according to the CDA's output level with 5% power efficiency improvement. Peak total harmonic distortion plus noise (THD+N) performance is 0.012%. Peak power efficiency of SIBO and CDA are 89% and 93.2%, respectively.