A continuous output current measurement circuit for switching step down DCDC regulator with a single sensing FET

2012 ◽  
Author(s):  
J. Mihhailov ◽  
S. Strik
Keyword(s):  
Current Measurement ◽  
Measurement Circuit ◽  
Output Current ◽  
Continuous Output ◽  
Step Down

High-Step-Down DC–DC Converter With Continuous Output Current Using Coupled-Inductors

2019 ◽  
Vol 34 (11) ◽  
pp. 10936-10944 ◽  
Author(s):  
Marziyeh Hajiheidari ◽  
Hosein Farzanehfard ◽  
Ehsan Adib
Keyword(s):  
Output Current ◽  
Coupled Inductors ◽  
Continuous Output ◽  
Step Down

scholarly journals Continuous-Input Continuous-Output Current Buck-Boost DC/DC Converters for Renewable Energy Applications: Modelling and Performance Assessment

Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2208 ◽  
Author(s):  
Nahla E. Zakzouk ◽  
Ahmed K. Khamis ◽  
Ahmed K. Abdelsalam ◽  
Barry W. Williams
Keyword(s):  
Renewable Energy ◽  
Performance Assessment ◽  
Detailed Comparison ◽  
Operating Conditions ◽  
System Modelling ◽  
Output Current ◽  
Point Tracking ◽  
Continuous Output ◽  
Continuous Input ◽  
Storage Batteries

Stand-alone/grid connected renewable energy systems (RESs) require direct current (DC)/DC converters with continuous-input continuous-output current capabilities as maximum power point tracking (MPPT) converters. The continuous-input current feature minimizes the extracted power ripples while the continuous-output current offers non-pulsating power to the storage batteries/DC-link. CUK, D1 and D2 DC/DC converters are highly competitive candidates for this task especially because they share similar low-component count and functionality. Although these converters are of high resemblance, their performance assessment has not been previously compared. In this paper, a detailed comparison between the previously mentioned converters is carried out as several aspects should be addressed, mainly the converter tracking efficiency, conversion efficiency, inductor loss, system modelling, transient and steady-state performance. First, average model and dynamic analysis of the three converters are derived. Then, D1 and D2 small signal analysis in voltage-fed-mode is originated and compared to that of CUK in order to address the nature of converters’ response to small system changes. Finally, the effect of converters’ inductance variation on their performance is studied using rigorous simulation and experimental implementation under varying operating conditions. The assessment finally revels that D1 converter achieves the best overall efficiency with minimal inductor value.

A New Output Current Measurement Method With Tiny PCB Sensors Capable of Being Embedded in an IGBT Module

2017 ◽  
Vol 32 (3) ◽  
pp. 1707-1712 ◽  
Author(s):  
Kazunori Hasegawa ◽  
Satoru Takahara ◽  
Shoji Tabata ◽  
Masanori Tsukuda ◽  
Ichiro Omura
Keyword(s):  
Measurement Method ◽  
Current Measurement ◽  
Output Current ◽  
Igbt Module

Development of PZT Multi-Channel Power Supply Based on PA93

2011 ◽  
Vol 48-49 ◽  
pp. 428-433 ◽  
Author(s):  
Wei Fan ◽  
Chang Cai Cui ◽  
Zhong Shen Li
Keyword(s):  
Power Supply ◽  
Piezoelectric Ceramic ◽  
Output Voltage ◽  
Output Current ◽  
Channel Power ◽  
Nonlinear Error ◽  
Voltage Variation ◽  
Continuous Output ◽  
Continuous Working ◽  
Power Channel

Good performance of driving power supply is the key to achieve high-precision positioning of the piezoelectric ceramic. In this paper, mainly from the expansion of power channel, lower ripple and interference, reducing the volume and temperature control of amplifier such aspects, developed PZT multi-channel power supply based on PA93 power amplifier, and completed the corresponding experiments of the calibration characteristics. By testing, the output voltage of eight channels shows good linearity, the nonlinear error is less than 0.05％. the resolution is 6mv, the static ripple voltage is less than 9mV, the power bandwidth could be 5kHz, the continuous output current could be 1.5A, the voltage variation is less than 0.01％ after eight hours continuous working. The volume of power supply is only 280*260*120mm, the power supply could satisfy the requirements of PZT driving.

scholarly journals Efficiency of Synchronous and Asynchronous Buck-Converter at Low Output Current.

2019 ◽  
Vol 27 (2) ◽  
pp. 194-206
Author(s):  
Ismael Khaleel Murad
Keyword(s):  
Duty Cycle ◽  
Buck Converter ◽  
Voltage Regulator ◽  
Switching Frequency ◽  
Output Current ◽  
Load Current ◽  
Small Load ◽  
Step Down ◽  
Conduction Mode ◽  
Continuous Conduction Mode

In this paper both synchronous and asynchronous buck-converter were designed to work in continuous conduction mode “CCM” and to deliver small load current. Then the two topologies were tested in terms of efficiency at small load current by use of  different values of switching frequencies (range from 150 KHz to 1MHz) and three separated values of duty-cycle (0.4, 0.6 and 0.8).   Obtained results turns out that efficiency of both synchronous and asynchronous buck-converter “switching step-down voltage regulator” responds in a negative manner to the increase in the switching frequency. However, this impact is being stronger in synchronous topology because of magnifying effect of losses related to switching frequency compared to those related to conduction when working at small load currents; this behavior makes obtained efficiency of both topologies in convergent levels when they operated to deliver small output current especially when working with higher switching frequencies. Larger duty-cycle can rise up the efficiency of both topologies.

An Effort to Reduce Voltage from DC to DC Converter with a Monolithic Circuit Based on IC LM 2596

2019 ◽  
Vol 16 (12) ◽  
pp. 5162-5165
Author(s):  
Cekmas Cekdin ◽  
Zainuddin Nawawi ◽  
Muhammad Faizal
Keyword(s):  
Output Voltage ◽  
Cooling System ◽  
Electronic Devices ◽  
Input Voltage ◽  
High Heat ◽  
Output Current ◽  
Voltage Range ◽  
Step Down

Step down regulator is a device that can reduce the more significant input voltage to a smaller output voltage. The output is stable and well regulated, although the voltage fluctuates in the recommended input voltage range. In the system using IC LM 2596, the input voltage is 40 Volt dc, and the output voltage is 30 Volt dc. The output current of 15 amperes is applied to charge a 100 Ampere hour (Ah) battery on an inverter system installed and integrated with other electronic devices. The step-down IC LM 2596 will be stable at the output current below 15 Ampere. It is especially stable at load currents from 13.2 Ampere to 14.57 Ampere. In order for the current not to shrink, a good cooling system must be designed to dispose of heat on the IC LM 2596. Because the high heat greatly affects the output current on the IC LM 2596.

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