Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2013 - zeszyt 2

Integrated magnetic component in a 120 W resonant power supply dedicated for lighting applications

RAFAŁ WIDÓREK

nr katalogowy: 74680

LED lighting applications are gradually becoming more popular. They are replacing traditional lamps in all areas of application: from low power devices such as interior illumination, to high power devices such as street lighting or stadium lighting. These applications put a high constraint on the LED power supply size and efficiency. Since the lighting is working for prolonged periods of time during night and day, higher efficiency will lead to significant savings in power consumption. The lamps are often installed in places where the space is limited, thus small size of the power supply is a desirable feature. Having these requirements in mind, the authors present a high efficiency, compact design of a 120 W LED lamp power supply. The presented power supply operates at around 300 kHz switching frequency and is based on a class DE series-parallel LCLC resonant converter. The LCLC topology makes the resonant converter resistant to short circuiting the load. This feature improves the reliability of the power supply An active power factor correction circuit is also used to ensure compliance with necessary regulations. Converter description The power supply consists of three blocks presented in Fig. 1. Because the input filter and power factor correction circuits are classical constructions, they will not be described here. However, these parts influence the overall efficiency of the power supply, and will be included in the measurements section presented later in the paper. The most interesting block is the LCLC resonant converter and it will be described briefly below.Fig. 2 contains the schematic of the DCDC resonant converter. It consists of a half-bridge formed by transistors Q1 and Q2. The additional capacitances CQ1 and CQ2 connected to these transistors enable class DE switching technique. This significantly reduce both turn on and turn off switching losses of the transistors, thus improving efficiency. A series resonant c[...]

Jeśli masz wykupiony/przyznany dostęp - zaloguj się. Skorzystaj z naszych propozycji zakupu!

Publikacja


e-Publikacja (format pdf) - nr 74680 "Integrated magnetic compo..." licencja: Osobista Produkt cyfrowy	10.00 zł

Zeszyt


ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - e-zeszyt (pdf) 2013-2 licencja: Osobista Produkt cyfrowy	35.00 zł

Prenumerata

ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - prenumerata cyfrowa
licencja: Osobista

Produkt cyfrowy
Nowość

420.00 zł

ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - papierowa prenumerata roczna + wysyłka
licencja: Osobista

Szczegóły pakietu

Nazwa
ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - papierowa prenumerata roczna	528.00 zł brutto 488.89 zł netto 39.11 zł VAT (stawka VAT 8%)
ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - pakowanie i wysyłka	42.00 zł brutto 34.15 zł netto 7.85 zł VAT (stawka VAT 23%)

570.00 zł

ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - PAKIET prenumerata PLUS
licencja: Osobista

Szczegóły pakietu

Nazwa
ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA - PAKIET prenumerata PLUS (Prenumerata papierowa + dostęp do portalu sigma-not.pl + e-prenumerata)	636.00 zł brutto 588.89 zł netto 47.11 zł VAT (stawka VAT 8%)

636.00 zł

Zeszyt

2013-2

Twój Koszyk

Publikacja

Zeszyt

Prenumerata

Zeszyt

Czasopisma