基于单芯片的降压型电源转换器设计
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摘要
地质灾害监测设备大多采用蓄电池或与太阳能组合供电,供电电压一般在12 V左右,为了满足后端微处理器电路、数据采集与通信电路的低电压、大电流、高纹波抑制比和低能耗等要求,设计了一种基于单芯片的降压型高性能电源转换器。采用TPS6211x内置的FET,通过合理配置外接电阻、电容和电感等参数值,并完善PCB布局布线,将3.1～17 VDC降压至1.2～16 VDC,并可实现大电流输出。性能测试及实际应用情况表明,该电源转换器在5 V稳压输出时,能够提供1.48 A的大电流工作,纹波18.1 mV,电压调整率0.1%,电流调整率0.67%,转换效率91%,满足了地质灾害监测设备的工作需求。
The monitoring device of geological disaster mostly uses a combination of battery or solar power,which is generally about 12 V.In order to meet the needs of low voltage,high current,high ripple rejection ratio and low energy consumption for back-end microprocessor circuit,data acquisition and communication circuit,a high-performance Buck power converter based on single-chip was designed.Using the FET embedded in TPS6211x,through the rational parameter configuration of external resistors,capacitors,inductor,and perfect PCB layout wiring,it would reduce 3.1-17 VDC to 1.2-16 VDC with large current output.The performance test and applications show that,when the power converter's output voltage is 5 V,it can provide a large current of 1.48 A,ripple of 18.1 mV,voltage adjustment rate of 0.1%,current adjust rate of 0.67 and conversion efficiency of 91% and satisfy the demands of geological disaster monitoring device.
The monitoring device of geological disaster mostly uses a combination of battery or solar power,which is generally about 12 V.In order to meet the needs of low voltage,high current,high ripple rejection ratio and low energy consumption for back-end microprocessor circuit,data acquisition and communication circuit,a high-performance Buck power converter based on single-chip was designed.Using the FET embedded in TPS6211x,through the rational parameter configuration of external resistors,capacitors,inductor,and perfect PCB layout wiring,it would reduce 3.1-17 VDC to 1.2-16 VDC with large current output.The performance test and applications show that,when the power converter's output voltage is 5 V,it can provide a large current of 1.48 A,ripple of 18.1 mV,voltage adjustment rate of 0.1%,current adjust rate of 0.67 and conversion efficiency of 91% and satisfy the demands of geological disaster monitoring device.
引文
[1]杜承启.国内外电源变换器的新发展[J].电源技术,2004,28(4):193-198.
[2]林蓓娜.高效、智能:通信电源技术发展大趋势[J].通信电源技术,2009,26(6):66-67.
[3]黄润秋,向喜琼,巨能攀.我国区域地质灾害评价的现状及问题[J].地质通报,2004,23(11):1078-1024.
[4]许强.汶川大地震诱发地质灾害主要类型与特征研究[J].地质灾害与环境保护,2009,20(2):86-93.
[5]冯锦,隋升.基于STC89C52RC的DMFC电源监控系统[J].电源技术,2009,33(11):991-993.
[6]李桂丹,高晗琪,张春喜.基于SG3525的DC/DC直流变换器的研究[J].开关电源,2008,1(12):11-14.
[7]于姗姗,赖万昌,夏尚铭.基于MAX758的高效能DC/DC电源的设计[J].核电子学与探测技术,2009,29(1):191-195.
[8]许泰峰,曲伟,司娜.一种基于UC3843电流模式控制器的高效DC-DC模块电源设计[J].仪表技术,2010(4):66-67.
[9]Texas Instruments Integrated Products.TPS6211X Data Sheet[EB/OL].[2011-08-13].http://www.ti.com/.
[10]余小平,奚大顺.电子系统设计-基础篇[M].北京:北京航空航天大学出版社,2007:131-132.
[11]王洪辉,庹先国,许强,等.山体裂缝远程监测系统[J].自动化与仪表,2010,25(1):42-44.
[2]林蓓娜.高效、智能:通信电源技术发展大趋势[J].通信电源技术,2009,26(6):66-67.
[3]黄润秋,向喜琼,巨能攀.我国区域地质灾害评价的现状及问题[J].地质通报,2004,23(11):1078-1024.
[4]许强.汶川大地震诱发地质灾害主要类型与特征研究[J].地质灾害与环境保护,2009,20(2):86-93.
[5]冯锦,隋升.基于STC89C52RC的DMFC电源监控系统[J].电源技术,2009,33(11):991-993.
[6]李桂丹,高晗琪,张春喜.基于SG3525的DC/DC直流变换器的研究[J].开关电源,2008,1(12):11-14.
[7]于姗姗,赖万昌,夏尚铭.基于MAX758的高效能DC/DC电源的设计[J].核电子学与探测技术,2009,29(1):191-195.
[8]许泰峰,曲伟,司娜.一种基于UC3843电流模式控制器的高效DC-DC模块电源设计[J].仪表技术,2010(4):66-67.
[9]Texas Instruments Integrated Products.TPS6211X Data Sheet[EB/OL].[2011-08-13].http://www.ti.com/.
[10]余小平,奚大顺.电子系统设计-基础篇[M].北京:北京航空航天大学出版社,2007:131-132.
[11]王洪辉,庹先国,许强,等.山体裂缝远程监测系统[J].自动化与仪表,2010,25(1):42-44.
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