论文信息 - A single-inductor multiple-bipolar-output (SIMBO) converter with fully-adaptive feedback matrix and improved light-load ripple

A single-inductor multiple-bipolar-output (SIMBO) converter with fully-adaptive feedback matrix and improved light-load ripple

Specified for one output channel 1V to 4V, the second one 1.8V to 4V and the last one 0V to −1.8V, a prototype of single-inductor multiple-bipolar-output (SIMBO) DC-DC converter performed on 0.25-μm CMOS mixed signal process is presented. Fully-adaptive feedback matrix in pulse-width modulation (PWM) control to suppress cross regulation and constant-voltage-ripple pulse-frequency modulation (PFM) control to achieve fair light-load ripple for various conversion mode and wide-range conversion ratio are proposed. This converter can automatically switch between PWM and PFM control. The peak conversion efficiency is close to 90%.

Ye Li | Dirk Killat | Horst Schleifer | Zhiliang Hong | Weiwei Xu

[1] Ye Li,et al. A 90% peak efficiency single-inductor dual-output buck-boost converter with extended-PWM control , 2011, 2011 IEEE International Solid-State Circuits Conference.

[2] Ke-Horng Chen,et al. A single-inductor multiple positive and negative outputs (SIMPNO) converter with a vector current control mode for electronic paper displays (EPDs) , 2010, 2010 Proceedings of ESSCIRC.

[3] Franco Maloberti,et al. A 4-Output Single-Inductor DC-DC Buck Converter with Self-Boosted Switch Drivers and 1.2A Total Output Current , 2008, 2008 IEEE International Solid-State Circuits Conference - Digest of Technical Papers.

[4] Byunghun Lee,et al. Efficiency enhanced Single-Inductor Boost-Inverting Flyback converter with Dual Hybrid Energy transfer media and a Bifurcation Free Comparator , 2010, 2010 Proceedings of ESSCIRC.

[5] Franco Maloberti,et al. A 200mA 93% Peak Efficiency Single-Inductor Dual-Output DC-DC Buck Converter , 2007, 2007 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[6] Gyu-Hyeong Cho,et al. A Single-Inductor Step-Up DC-DC Switching Converter With Bipolar Outputs for Active Matrix OLED Mobile Display Panels , 2009, IEEE J. Solid State Circuits.

[7] Zhiliang Hong,et al. A Dual-Mode Single-Inductor Dual-Output Switching Converter With Small Ripple , 2010, IEEE Transactions on Power Electronics.