基于NCP1351B的脑电采集仪的电源设计与研究

NCP1351B是一款新型低功耗、离线式电流模式控制芯片。该芯片保护功能完善,同时具有良好的待机能耗。对芯片的2个重要特性待机工作模式和负电流检测技术进行研究和分析;利用这2个特性设计脑电采集仪的电源。实际生活中要求脑电采集仪在空闲时自动进入待机工作模式,一旦开始工作时,迅速进入正常工作状态,这就要求电源有良好的待机能耗。实验结果表明,基于NCP1351B的脑电采集仪电源的带负载能力强、稳定性好、输出峰峰杂音小,同时具有很低的待机能耗,达到了节能目的。

Research and Design of the EEG Acquisition Instrument Printer Power Supply Based on NCP1351B

The NCP1351B is a new current-mode controller with low power consumption.This chip has perfect protection function and low power consumption.Two important features(standy operation mode and the negative sensing technique) are introduced.Finally,a power supply for EEG acquisition instrument based on NCP1351B is presented.In real life,it requires EEG acquisition instrument can switch to a standy operation mode during idle time automatically,once start to work,it can go back into normal working state quickly.so power-efficient is desired.Testified by the experiment,this power supply with NCP1351B for EEG acquisition instrument has strong load capacity,outstanding reliability and small noise.It consumes less power and reduces energy loss.