A fast-response low-dropout regulator based on power-efficient low-voltage buffer

Shen, Liran; Zhang, Yan; Zhang, Xing; Zhao, Yuanfu; Gao, Ming

doi:10.1109/mwscas.2008.4616857

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…This also boosts the value of gm and furthermore reduces the output impedance of the buffer (ro,buf )according to (6). Since the unity-gain frequency of the LDO increases with the load current increasing according to (4), the decrease of the output impedance can be able to push the second pole p1 to the high frequency which could make the loop of the circuit more stable under the entire load current range.…”

Section: Stucture Of Ldo Linear Regulatormentioning

confidence: 99%

“…The loop gain characteristics of LDO are much more suffered from the variation of the load current, since the transconductance parameter and output impedance of pass transistor have a close relationship with the load current according to (4). In order to make sure the LDO be in stable operation, stability analysis is needed under different load condition.…”

Section: Design Of the Proposed Ldo Regulatormentioning

confidence: 99%

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Design of a dynamic frequency compensation low dropout voltage regulator with buffer impedance attenuation

Peng

She

2012

2012 2nd International Conference on Consumer Electronics, Communications and Networks (CECNet)

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This paper presents a low-drop (LDO) linear regulator with buffer impedance attenuation (BIA) for frequency compensation. This novel proposed LDO take advantage of the dynamically-biased shunt feedback in the buffer stage, which could lower its output resistance for driving the pass device to achieve fast response. Implemented in 0.35 m CMOS process, the LDO dissipates 184 A quiescent current and is able to deliver up to 100mA load current. With a 2.3 F output capacitance, the maximum transient-output variation is 25mV with full-load step change of 100mA.The proposed circuit will find application in the battery-powered portable devices. Kwyword: LDO; BIA; shunt feedback; pass deviceI.

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Section: Stucture Of Ldo Linear Regulatormentioning

confidence: 99%

Section: Design Of the Proposed Ldo Regulatormentioning

confidence: 99%

Design of a dynamic frequency compensation low dropout voltage regulator with buffer impedance attenuation

Peng

She

2012

2012 2nd International Conference on Consumer Electronics, Communications and Networks (CECNet)

View full text Add to dashboard Cite

show abstract

“…In our design, the bias circuitry includes M9-M14 transistors operating in the subthreshold region. M9 and M10 are reversely-biased diode-connected PMOS transistors, forming a pseudo resistive divider [5]. The bias voltage depends on the ratio between the size of M9 and M10, which can reduce the effect of process variations effectively.…”

Section: Introductionmentioning

confidence: 99%

A low-power 0.5V regulator with settling enhancement for wireless sensor nodes

Wen

Hsu

Hong

et al. 2013

2013 IEEE International Symposium on Circuits and Systems (ISCAS2013)

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This paper presents a low-power voltage regulator for wireless sensor nodes. The circuit, implemented in a 90 nm CMOS process, generates a process-temperature-voltage independent 0.5 V while only consuming 26 nA. The output voltage variation is within 27 mV when power supply changes from 1 to 2 V and can provide a 15 μA load current. A fast settling technique is employed to improve the startup response without increasing design complexity. Keywords-regulator, wireless sensor network, power managementI.

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Wireless powering electronics and spiral coils for implant microsystem toward nanomedicine diagnosis and therapy in free-behavior animal

Chang

Hou

Shieh

et al. 2012

Solid-State Electronics

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A fast-response low-dropout regulator based on power-efficient low-voltage buffer

Cited by 5 publications

References 8 publications

Design of a dynamic frequency compensation low dropout voltage regulator with buffer impedance attenuation

Design of a dynamic frequency compensation low dropout voltage regulator with buffer impedance attenuation

A low-power 0.5V regulator with settling enhancement for wireless sensor nodes

Wireless powering electronics and spiral coils for implant microsystem toward nanomedicine diagnosis and therapy in free-behavior animal

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