A low dropout voltage regulator with a transient voltage spikes reducer and  improved figure of merit

Guru PRASAD; Kumara SHAMA

doi:https://doi.org/10.3906/elk-1904-203

Makale detayları

A low dropout voltage regulator with a transient voltage spikes reducer and improved figure of merit

Yazarlar:

Guru PRASAD | Kumara SHAMA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2020 Vol.28 Issue 1, pp.500-508

Belge Tipi:

Makale

Yayın Tarihi:

12/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000733370

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

DOI:

https://doi.org/10.3906/elk-1904-203

Özet:

 

An area efficient output capacitor-free low dropout [LDO] voltage regulator with an improved figure of merit   is presented in this paper. The proposed LDO regulator consists of a novel, dynamically biased error amplifier that   reduces overshoot and undershoot voltage spikes arising from abrupt load changes. Source bulk modulation is employed   to enhance the current driving capability of the pass transistor. An adaptive biasing scheme is also used along with   dynamic biasing to improve the current efficiency of the system. The on-chip capacitor required for proper working of   the LDO regulator is only 35 pF. The proposed LDO regulator is designed and simulated in 180 nm standard CMOS   technology. The LDO regulator exhibits a line regulation of 1.67 mV/V and a load regulation of 100 µV /mA. When   load changes from 0 mA to 100 mA in 1 µs, an undershoot of 148 mV and an overshoot of 172 mV are observed. The   measured power supply rejection ratio is 25 dB at 100 kHz. The working of the proposed LDO regulator has been tested   under all process corners and Monte-Carlo statistical analysis reveals that it is robust against process variations and   local mismatch.

Makale detayları

A low dropout voltage regulator with a transient voltage spikes reducer and improved figure of merit

Yazarlar: Guru PRASAD | Kumara SHAMA

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2020 Vol.28 Issue 1, pp.500-508

Belge Tipi: Makale

Yayın Tarihi: 12/2019

Belge Dili: İngilizce

Document ID (Org No.): 2000733370

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

DOI: https://doi.org/10.3906/elk-1904-203

Sayı

Yazarlar:

Guru PRASAD | Kumara SHAMA

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2020 Vol.28 Issue 1, pp.500-508

Belge Tipi:

Makale

Yayın Tarihi:

12/2019

Belge Dili:

İngilizce

Document ID (Org No.):

2000733370

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

DOI:

https://doi.org/10.3906/elk-1904-203