| 采用电荷泵箝位调整器的BUCK型DC-DC驱动电路 |
| |
| 引用本文： | 叶强,来新泉,袁冰,李演明,陈富吉.采用电荷泵箝位调整器的BUCK型DC-DC驱动电路[J].固体电子学研究与进展,2009,29(2). |
| |
| 作者姓名： | 叶强 来新泉 袁冰 李演明 陈富吉 |
| |
| 作者单位： | 西安电子科技大学电路CAD所,西安,710071 |
| |
| 摘 要： | 为了提高驱动效率,设计了一种新颖的适用于BUCK型DC-DC的驱动电路,在芯片内部采用一个电荷泵和自适应死区时间控制逻辑的驱动电路。当芯片正常工作时,输出级低端LDNMOS管的驱动电平通过较大的电荷泵电容稳定在5.5V左右,输出级高端LDNMOS管的驱动电平通过自举电容高达29.93V,从而实现对DC-DC输出级高端和低端的驱动,这样既提高了驱动效率,又减少了对外部多个电源的需求。采用此电路的一款电流模BUCK型DC-DC已在UMC06μmBCD工艺线投片,芯片效率高达94%,输出级高端和低端LDNMOS的导通电阻为120mΩ,最大输出电流为5A,该驱动电路工作良好,芯片面积减小了15.4%。
|
| 关 键 词： | 直流-直流 电荷泵 自举 效率 高压金属氧化物半导体管 |
Novel Driver for BUCK DC-DC Converter with Active Charge Pump Clamp Regulator |
| |
| YE Qiang,LAI Xinquan,YUAN Bing,LI Yanming,CHEN Fuji.Novel Driver for BUCK DC-DC Converter with Active Charge Pump Clamp Regulator[J].Research & Progress of Solid State Electronics,2009,29(2). |
| |
| Authors: | YE Qiang LAI Xinquan YUAN Bing LI Yanming CHEN Fuji |
| |
| Affiliation: | Institute of Electronic CAD;Xidian University;Xi'an;710071;CHN |
| |
| Abstract: | In order to enhance the efficiency characteristics of switching BUCK DC-DC converter,a novel gate drive circuit is proposed to solve the problem,a charge pump circuit and adaptive non-overlapping gate driver are used in the design.With the operation of chip,the power supply for low-side LDNMOS transistor of output stage is clamped at 5.5 V by charge pump capacitor,the power supply for high-side LDNMOS transistor of output stage reached 29.93 V by bootstrap capacitor.The bootstrapped power supply minimizes t... |
| |
| Keywords: | DC-DC charge pump bootstrap efficiency LDNMOS |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
