Dynamic Current Boosting Technique of Flipped Voltage Follower for Low_Dropout Regulator

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 6Sprache: EnglischTyp: PDF

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Abdi, Fatemeh; Bastan, Yasin; Amiri, Parviz (Shahid Rajaee Teacher Training University, Tehran, Iran)
Kennel, Ralph c (Technische Universität München, Munich, Germany.)
Reddig, Manfred (Augsburg University of Applied Sciences, Augsburg, Germany)

A low-dropout voltage regulator is presented with the DCB-FVF structure for SMPS applications and is simulated in 0.18 µm CMOS technology. Proposed LDO uses an auxiliary FVF circuit to ensure the stability of the circuit. An enhancement circuit of dynamic current identifies the slew rate, improves the output transient response and reduces the ripples of output voltage during sudden changes in system. The dropout voltage of the LDO is 100mV for 1.1-1.5V input voltage. The output voltage is determined with ripple less than 40.22 mV and the rise and fall times equal to 500ns below 0.7 mus.