An 80-V integrated boost converter for piezoelectric actuators in smartphones

被引：5

作者：

Jeon, Inho ^{[1
]}

Nam, Hyunseok ^{[1
]}

Lee, Heeyoung ^{[1
]}

Ahn, Youngkook ^{[1
]}

Roh, Jeongjin ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect Engn, Ansan 426791, South Korea

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2013年 / 75卷 / 03期

关键词：

Boost converter; Power converter; Power management;

D O I：

10.1007/s10470-013-0063-5

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A boost converter for piezoelectric actuator driving system in haptic smartphones is proposed and implemented using a 0.35 mu m BCDMOS process. The designed boost converter generates extremely high output voltage from a low-voltage battery supply. The boost converter provides stable power for the piezoelectric actuator with the peak-current control technique. The minimum variation of the output ripple variation can be achieved by the designed current-sensing and peak-current control circuits. The supply voltage of the boost converter is 2.7-4.2 V and the maximum output voltage is up to 80 V. The complete piezoelectric actuator driving system consists of a serial interface, SRAM, and signal-shaping logic as well as the boost converter. It also includes the resistor-string digital-to-analog converter and high voltage piezoelectric actuator driver (PZ driver). The fabricated chip size is 2,100 x 2,200 mu m, including bonding pads.

引用

收藏

页码：531 / 537

页数：7

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