Design of Low Power Monolithic DC-DC Buck Converter with Integrated Inductor

2006 ◽  
Author(s):  
S. Musunuri ◽  
P.L. Chapman
Keyword(s):  
Low Power ◽  
Buck Converter ◽  
Integrated Inductor

scholarly journals Buck Converter for Low-Power PV Modules: A Comparative Study

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1050
Author(s):  
Ferran Reverter ◽  
Manel Gasulla
Keyword(s):  
Low Power ◽  
Buck Converter ◽  
Operating Voltage ◽  
Storage Unit ◽  
Maximum Power Point ◽  
Pv Module ◽  
Optimal Value ◽  
Pv Modules ◽  
Energy Transducer ◽  
Power Point

Autonomous sensors that harvest energy from the environment usually employ a dc/dc converter to regulate the operating voltage of the energy transducer around its maximum power point (MPP). In this context, this work evaluates the efficiency of a buck converter when regulating the operating point of two low-power photovoltaic (PV) modules subjected to different irradiance levels. The buck converter operates in burst mode (BM) and is able to transfer the energy from the PV module to a storage unit through an optimal value of the inductor current. Experimental results show that an irradiance increase can cause either an increase or a decrease of the converter efficiency. This is because the higher the irradiance, the higher both the MPP voltage and current of the PV module, which involve opposite effects in terms of the converter efficiency.

scholarly journals A Fully Integrated Bluetooth Low-Energy Transceiver with Integrated Single Pole Double Throw and Power Management Unit for IoT Sensors

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2420 ◽  
Author(s):  
Sung Jin Kim ◽  
Dong Gyu Kim ◽  
Seong Jin Oh ◽  
Dong Soo Lee ◽  
Young Gun Pu ◽  
...  
Keyword(s):  
Low Power ◽  
Power Management ◽  
Low Noise ◽  
Buck Converter ◽  
Low Energy ◽  
Management Unit ◽  
Load Current ◽  
Bluetooth Low Energy ◽  
Current Consumption ◽  
Power Management Unit

This paper presents a low power Gaussian Frequency-Shift Keying (GFSK) transceiver (TRX) with high efficiency power management unit and integrated Single-Pole Double-Throw switch for Bluetooth low energy application. Receiver (RX) is implemented with the RF front-end with an inductor-less low-noise transconductance amplifier and 25% duty-cycle current-driven passive mixers, and low-IF baseband analog with a complex Band Pass Filter(BPF). A transmitter (TX) employs an analog phase-locked loop (PLL) with one-point GFSK modulation and class-D digital Power Amplifier (PA) to reduce current consumption. In the analog PLL, low power Voltage Controlled Oscillator (VCO) is designed and the automatic bandwidth calibration is proposed to optimize bandwidth, settling time, and phase noise by adjusting the charge pump current, VCO gain, and resistor and capacitor values of the loop filter. The Analog Digital Converter (ADC) adopts straightforward architecture to reduce current consumption. The DC-DC buck converter operates by automatically selecting an optimum mode among triple modes, Pulse Width Modulation (PWM), Pulse Frequency Modulation (PFM), and retention, depending on load current. The TRX is implemented using 1P6M 55-nm Complementary Metal–Oxide–Semiconductor (CMOS) technology and the die area is 1.79 mm2. TRX consumes 5 mW on RX and 6 mW on the TX when PA is 0-dBm. Measured sensitivity of RX is −95 dBm at 2.44 GHz. Efficiency of the DC-DC buck converter is over 89% when the load current is higher than 2.5 mA in the PWM mode. Quiescent current consumption is 400 nA from a supply voltage of 3 V in the retention mode.

A Design of a 92.4% Efficiency Triple Mode Control DC–DC Buck Converter With Low Power Retention Mode and Adaptive Zero Current Detector for IoT/Wearable Applications

2017 ◽  
Vol 32 (9) ◽  
pp. 6946-6960 ◽  
Author(s):  
Young-Jun Park ◽  
Ju-Hyun Park ◽  
Hong-Jin Kim ◽  
Hocheol Ryu ◽  
SangYun Kim ◽  
...  
Keyword(s):  
Low Power ◽  
Buck Converter ◽  
Mode Control ◽  
Zero Current ◽  
Triple Mode

A low‐power CMOS DC‐DC buck converter with on‐chip stacked spiral inductor

2011 ◽  
Vol 28 (2) ◽  
pp. 38-43 ◽  
Author(s):  
Chan‐Soo Lee ◽  
Ho‐Yong Choi ◽  
Yeong‐Seuk Kim ◽  
Nam‐Soo Kim
Keyword(s):  
Low Power ◽  
Buck Converter ◽  
Spiral Inductor ◽  
Low Power Cmos ◽  
On Chip

scholarly journals Implementation of a low cost ac-dc converter for high and low power applications

2017 ◽  
Vol 7 (1.2) ◽  
pp. 77
Author(s):  
R. C. Ilambirai ◽  
Subhransu Sekhar Dash ◽  
N K Rayaguru
Keyword(s):  
Low Power ◽  
Low Cost ◽  
Input Voltage ◽  
Time Instant ◽  
Buck Converter ◽  
Multiport Converter ◽  
Switching Losses ◽  
Bridge Rectifier ◽  
Single Input ◽  
Power Application

This paper proposes an ac-dc converter that gives multiple outputs capable of feeding both high and low power applications. The input ac supply is converted to dc by a diode bridge rectifier, filtered and fed to a modified multiport converter (MPC). This paper focuses on the design of the modified multiport converter that has a cascaded combination of zeta and a buck converter. This is designed as a single input and multiple output converter (SIMO) structure which can operate two loads, one with a high power and other with a low power application, depending on the time instant. The need for opting a multiport converter, reduces the number of switches utilized, thereby reducing the switching losses in the circuit. The zeta in the MPC boosts the input voltage and the buck converter reduces the input voltage and is accordingly fed to the need of the load. The design of the components have been analysed through steady state. MATLAB Simulink has been used to simulate the converter circuit and the varied outputs of the zeta and buck modes are compared. A hardware prototype of the ac-dc converter has been implemented and their results have been shown.

Sign in / Sign up

Export Citation Format

Share Document