Part Number: TPS51200 slua886-DDR VTT Power Solutions A Competitive Analysis.pdf
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Assuming the number of low bit lines is larger than that of high bit lines, the net V TT current goes out of termination and V TT voltage is lower than V DDQ /2.…
Other Parts Discussed in Thread: LP2997 请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。 https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/619699/designing-a-1v-power-supply-that-can-sink-current 主题中讨论的其他器件…
Other Parts Discussed in Thread: LP2997 CPU使用的是MCF54418,VTT利用LP2997提供,测量出VTT的输出电压纹波较大,幅值约400mv,并伴随发热。
后来将C58(本来为10uf瓷片电容)并了3颗10uf电容,问题解决。
但是SPEC上面写的Ceramic capacitors can also be used. A value in the range of 10 µF with X5R or better would be an ideal…
Other Parts Discussed in Thread: LP2997 , TPS650250 在我现在的应用中,我用一片TPS650250和一片LP2997做电源管理。TPS650250的DCDC2输出1.8V给DDR2电路(应用中只用了一片128MBX8的DDR2,型号是MT47H128M8CF-3 ),DCDC3输出1.2V给MPU的内核,DCDC1没有用到(产品是外部3.3V供电),LP2997输出0.9V给DDR2_VTT和DDR2_VREF;现在这样设计的产品运行的很好,但我想更改一下我的设计…