7.5V高精度BiCMOS电压调整器的设计  

Design of a 7.5V High Precision BiCMOS Voltage Regulator

作　　者：袁小龙[1] 历晓华[2] 吴晓波[1] 

机构地区：[1]浙江大学超大规模集成电路设计研究所,杭州310027 [2]浙江大学网络与信息中心,杭州310027

出　　处：《微电子学》2009年第2期203-207,共5页Microelectronics

基　　金：国家自然科学基金资助项目(90707002)

摘　　要：提出一种应用于有源功率因数校正控制芯片的7．5V高精度线性电压调整器的设计。由于采用了多种改进措施，包括片上微调电阻网络的应用，该调整器具有良好的电压调整特性和很高的温度稳定性。此外，调整器还集成了过流保护功能。该电路采用1．5μm BiCMOS工艺设计实现，面积为0．42min×0．63mm。测试结果表明，在12V供电电压下，当负载电流在0～20mA范围内变化时，其负载调整率达23％／A。片上微调电阻的应用使其可获得很低的温度系数。A 7.5 V high precision linear regulator was proposed,which was successfully applied to an active power factor correction （APFC）controller chip. The proposed improvements, including on-chip trimming resistor network,make the circuit have excellent load regulation performance and good temperature stability. In addition, an over-current protection circuit was also integrated into the regulator. The device was designed and fabricated in 1.5μm BiCMOS technology. The chip occupies an area of 0. 42 mm× 0. 63 mm. Test results showed that the circuit had a load regulation of about 23 %/A when the load current varied from 0 to 20 mA at 12 V supply voltage. And a low temperature coefficient could be achieved by adjusting the trimming resistor.

关 键 词：线性电压调整器 负载调整率 微调电阻 BICMOS 过流保护 

分 类 号：TN433[电子电信—微电子学与固体电子学]