LLC resonant half-bridge converter design guideline Silvio De Simone Introduction The growing popularity of the LLC resonant converter in its half-bridge implementation (see ... capacitor Cr acts as both resonant and dc blocking capacitor. As a result, the alternate voltage across Cr is superimposed to a dc level equal to Vdc/2.
Conventional isolated single-input multi-output DC-DC resonant converters needed lengthy and complicated secondary feedback control design, but it cannot suitable for low-cost and high accuracy of less demanding situations. A novel, simple and good dynamic performance resonant converter with MPCOT primary feedback control is proposed in this paper. The feedback signal …
The traditional pure switched-capacitor equaliser brings the large inrush current and low energy density. This study proposes a series of resonant switched-capacitor (ReSC) voltage equaliser, which realises energy …
The modular cell is shown in the dashed box in Fig. 2.1, which is composed of two diodes D pn1 and D pn2, a filter capacitor C pon, a resonant capacitor C pn, and a resonant inductor L pn. The modular cells connected to the positive and negative polarity end of the input voltage source V in are defined as positive and negative modular cells ...
An inductor-capacitor series resonant converter (LLC-SRC) provides soft-switching features that allow high-frequency operation. SSZTCW4 – OCTOBER 2019 Submit Document Feedback ... High-frequency resonant converter design considerations, Part 2 ...
power density, the design of a resonant converter is an involved task, and requires more effort for optimization compared to PWM converters. This document aims to simplify this task, and make it easier to ... the output capacitor filters the rectified ac current and outputs a DC voltage. Figure 2.1 Full-Bridge LLC converter with Full-Bridge ...
Design of Resonant Half-Bridge converter using IRS2795(1,2) Control IC. 1. Introduction and Device Overview. The IRS2795(1,2) is a self oscillating half-bridge driver IC for resonant half …
High-power resonance capacitors are an important component in magnetic resonance using wireless power transfer EV charging systems. This is because a high-accuracy resonance …
The resonant capacitor must be of high voltage type (over 600V). The rectifier circuit produces DC voltage by rectifying alternating current ... The goal is to design a half-bridge LLC resonant converter using CoolMOS MOSFETS for the primary power switches and
Resonant Tank. The resonant tank is made up of a resonant capacitor (C R) and two inductors: the resonant inductor (L R), in series with the capacitor and transformer, and the magnetizing inductor (L M), in parallel.The tank''s role is to filter out the square wave''s harmonics, outputting a sine wave of the fundamental switching frequency to the input of the transformer.
XDPS2201, converter main stage design, parametrization via .dp vision tool and PCB layout hints. Intended audience Design engineers of power supply with high performance and ultrahigh power density. DG_2009_PL21_2010_113112 Design Guide Please read the Important Notice and Warnings at the end of this document V1.0 2021-03-01
The main design considerations are: (i) soft-switching operation for all semiconductors; (ii) maximum voltage gain requirement; and (iii) resonant capacitor voltage stress limitation. Step 1: Transformer turns ratio calculation To guarantee zero-current turn-off operation of the secondary rectifier, the voltage gain should be higher than unity.
Classification of resonant converters AN2644 6/64 switching inverters driven by this kind of switch network are considered part of the group called "class D resonant inverters".
The resonant tank (resonant inductor Lr, resonant capacitor Cr, and transformer Tr) are designed to achieve a resonant frequency at 250KHz and maximum switching frequency up to 450KHz. On the output side, the full wave synchronous rectification uses two 150V, 4.4mΩ silicon SR MOSFETs in parallel per switch to rectify the output to 54V. Figure 1.
For a pulsed power system using capacitors as an energy storage unit, the performance of the capacitor charging power supply determines the stability of the output voltage. The high-frequency resonant converter has the advantages of constant charging current and strong anti-load short-circuit capability when used for capacitor charging, which is very suitable …
Resonant switched-capacitor (ReSC) converters show similar promise as they benefit from many of the same architectures and scaling trends, but also from ongoing improvements in mm-scale magnetic devices. ... In this study, we explore the design and optimization of 2:1 step-down topologies, based on representative capacitor technologies, …
This application report presents analysis of resonant tank current on LLC. Three current measurements of power resistance, current transformer, and current probe are discussed and …
mechanical tuning capacitor. The induc- tance value of the coil is not changed in this arrangement. Rather, the capacitor is ad- justed to change the resonant frequency of the coil-capacitor combination. At each setting of the capacitor, we will have resonance (canceled reactance) at a different frequency within the adjustment range of the ...
The traditional pure switched-capacitor equalizer suffers from a large inrush current and low balance speed. An automatic parallel resonant switched-capacitor equalizer (PReSCE) for series-connected battery strings is proposed, which utilizes resonant switched-capacitor to eliminate the inrush current. The parallel ReSC converters not only minimizes output impedance at the low …
Real-world testing reveals an application- and component-specific frequency boundary for impedance. At that boundary, the equivalent series inductance (ESL) of the capacitor forms an LC resonance circuit with itself. This is referred to as self-resonance. Up to its self-resonant frequency, a capacitor acts like it''s supposed to—like a ...
Here, a minimum resonant capacitor design approach is proposed for the insulated-gate bipolar transistor (IGBT)-based high-power LLC resonant converter to improve its comprehensive efficiency in the electric vehicle (EV) battery charging application. The mathematical model of LLC resonant converter is established by using the first harmonic ...
An isolated LLC resonant converter is generally adopted as the DC/DC topology in on-board battery charger (OBC). However, since it has the transformer that occupies the largest volume in wide-range output voltage, there is a limit to reducing its volume of DC/DC stage in OBC. To overcome it, non-isolated series-resonant converter (SRC) without the transformer is proposed …
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