TY - GEN

T1 - Fully integrated switched-capacitor voltage converter with regulated output

AU - Shunkov, Valery E.

AU - Kus, Oleg N.

AU - Prokopyev, Vitaly Y.

AU - Butuzov, Vladimir A.

AU - Bocharov, Yury I.

PY - 2018/4/12

Y1 - 2018/4/12

N2 - The paper presents the integrated circuit (IC) of the inductorless switched-mode DC-DC voltage converter. The converter is based on a novel multiphase switched-capacitor architecture. It uses reconfigurable charge-pump circuits and a multiloop discrete and continuous time control technique. The control unit performs a converter topology selection, a value of switched capacitors selection as well as a conversion frequency regulation. The chip also comprises a built-in low-dropout linear regulator. The on-chip reference of 1.0 V is powered by a PSRR-enhancing pre-regulator. The core of bandgap reference uses a dynamic threshold voltage MOSFET (DTMOS) transistors instead of generally used diode-connected vertical p-n-p bipolar transistors. The IC has been implemented in a commercially available 180 nm CMOS technology with five metal layers and stacked metal-insulator-metal capacitors. It is intended for use as a standalong IC for converting power rail voltages or lithium electrochemical cell voltages 2.8 V-5.5 V conversion into power supply voltages 1.2 V-3.3 V of the modern microcontrollers and other low-voltage ICs. It also may be used as a embedded IP block of a system-on-chip. The paper discusses features of regulation in a multiphase system over a wide range of input and output voltages and load currents. It also presents the results of the IC samples evaluation.

AB - The paper presents the integrated circuit (IC) of the inductorless switched-mode DC-DC voltage converter. The converter is based on a novel multiphase switched-capacitor architecture. It uses reconfigurable charge-pump circuits and a multiloop discrete and continuous time control technique. The control unit performs a converter topology selection, a value of switched capacitors selection as well as a conversion frequency regulation. The chip also comprises a built-in low-dropout linear regulator. The on-chip reference of 1.0 V is powered by a PSRR-enhancing pre-regulator. The core of bandgap reference uses a dynamic threshold voltage MOSFET (DTMOS) transistors instead of generally used diode-connected vertical p-n-p bipolar transistors. The IC has been implemented in a commercially available 180 nm CMOS technology with five metal layers and stacked metal-insulator-metal capacitors. It is intended for use as a standalong IC for converting power rail voltages or lithium electrochemical cell voltages 2.8 V-5.5 V conversion into power supply voltages 1.2 V-3.3 V of the modern microcontrollers and other low-voltage ICs. It also may be used as a embedded IP block of a system-on-chip. The paper discusses features of regulation in a multiphase system over a wide range of input and output voltages and load currents. It also presents the results of the IC samples evaluation.

KW - charge-pump circuit

KW - CMOS technology

KW - DC-DC voltage converter

KW - feedback control system

KW - integrated circuit

KW - linear regulator

KW - multiphase system

KW - switched capacitor circuit

KW - switched mode power supply

UR - http://www.scopus.com/inward/record.url?scp=85051048168&partnerID=8YFLogxK

U2 - 10.1109/MWENT.2018.8337193

DO - 10.1109/MWENT.2018.8337193

M3 - Conference contribution

AN - SCOPUS:85051048168

VL - 2018-March

SP - 1

EP - 4

BT - Moscow Workshop on Electronic and Networking Technologies, MWENT 2018 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 1st Moscow Workshop on Electronic and Networking Technologies, MWENT 2018

Y2 - 14 March 2018 through 16 March 2018

ER -