2008 a good master thesis for LDO with no external capacitor

Jason_ke · 发表于 2010-3-3 14:41:35

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A low-dropout (LDO) voltage regulator for low-power applications is designed without an external capacitor for compensation. The regulator has two stages, the first a folded cascode amplifier and the second a large pass transistor acting as a common-source amplifier. To better explore the tradeoff between bandwidth and power supply rejection, transistor dimensions are modified to support three different bias current levels for the same topology. Tradeoffs involving phase margin and load capacitance are also explored.
In simulation, the regulator provided an output of 1.3 V from an unregulated 1.8 V supply, using a 0.75 V reference. By exploiting the tradeoffs between PSRR, bandwidth, and power consumption, a PSRR between 40-60 dB is achieved with a bandwidth between 10 kHz-350 kHz while burning no more than 150 µA of current. The output voltage is stable for load currents between 18-174 mA.

电子几何 · 发表于 2010-3-3 23:28:13

帮顶下

ni3131 · 发表于 2010-3-4 00:12:35

帮顶下

神经刀 · 发表于 2010-3-4 00:26:25

多谢共享！！

FrancisFan · 发表于 2010-3-10 09:59:24

ding yi ha. Thanks

avigaadu · 发表于 2010-3-10 23:15:04

1# Jason_ke

niulinux · 发表于 2010-3-13 22:45:10

这个不错，感谢共享。

leonken437 · 发表于 2010-3-16 09:35:36

dddddddddddddddddddd

limingchou · 发表于 2010-3-19 20:32:56

dingding

678king · 发表于 2010-3-25 11:08:12

单个真是慢啊，还有灌水之嫌。

[原创] 2008 a good master thesis for LDO with no external capacitor

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