EVL6566B-40WSTB

量産中

40 W wide input range flyback converter using L6566BH Multimode controller for SMPS

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  • The board implements a reference design of a 40W Switch Mode Power Supply dedicated to Set-Top Box, DVD and Auxiliary SMPS for Flat TV or small size Flat screen equipment. The board accepts wide range input voltage (90 to 265Vrms) and delivers 4 voltages. It is based on the L6566B, a new current mode fixed frequency or QR controller. High efficiency and low standby consumption are the main characteristics of this board. This joined to minimal part count required and low cost approach of the global solution makes it a very interesting solution for powering Digital Consumer Equipment, capable of meeting worldwide standby rules.

    The topology of this converter is the classical Flyback, working in continuous and discontinuous conduction mode with fixed frequency, capable of achieving the best trade-off between the peak/rms current ratio and output capacitors size. The nominal switching frequency, 62 KHz, has been chosen to get a compromise between the transformer size and the harmonics of the switching frequency, optimizing the input filter size and its cost. The input EMI filter is a classical Pi-filter, 1-cell for differential mode noise. The MOSFET is a standard and inexpensive 600V-2Ωmax, TO-220FP, needing a just small heat sink. The transformer is a layer type, using a standard ferrite type EER28L. It has been designed according to the EN60065. The reflected voltage is 70V, providing enough room for the leakage inductance voltage spike with still margin for reliability of the MOSFET.
    The output rectifiers have been selected according to the maximum reverse voltage, forward voltage drop and power dissipation. The rectifiers for 5V and 12V outputs are Schottky, low forward voltage drop type, hence dissipating less power with respect to standard types. They are housed in TO-220 package. A small heat sink for both devices is required. The other two output rectifiers are Schottky too but with a smaller package. The snubber R2 and C7 damps the oscillation produced by the diode D2 at MOSFET turn-on. A small LC filter has been added on all output in order to filter the high frequency ripple without increasing the output capacitors and a capacitor (100nF) has been placed on each output, to limit the spike amplitude.
    The output voltage regulation is performed by secondary feedback sensing the 12V, 5V and 3.3V outputs, while for 1.8V output the regulation is achieved by the transformer coupling. The feedback network uses a TS2431 as error amplifier which drives an optocoupler SFH617A-4, insuring the required insulation between primary and secondary. The opto-transistor modulates directly the voltage on COMP pin of the L6566B.
    The controller, the new L6566B, is an extremely versatile current mode primary controller embedding all functions needed to get very high performances power supplies. It integrates also all protections are needed by a power supply offering a very high degree of flexibility to the designer.

    主な特徴

    • Input voltage: Vin: 90 - 264 Vrms, f: 45-66 Hz
    • Output voltages:
      • 1.8 V/1.73 A, dedicated to digital circuitry and to 1.2 V local post regulators
      • 3.3 V/0.5 A, dedicated to analog peripherals and 2.5 V regulators
      • 5 V/2.4 A, dedicated to HDD/DVD and 5 V circuitry
      • 12V/ 1.9Avg÷2.9Apk, dedicated to HDD/DVD, SCART and LNBP21 for satellite stb. Average load is 1.9 A, 2.9 A is dedicated to HDD/DVD spin-up
    • Standby: better then 800 mW @ 230 Vin and 50 mA load
    • No-load: better then 250 mW @ 230 Vin
    • Short circuit protection: on all outputs, with auto-restart at short removal
    • PCB type and size: Single side 70 μm (2-Oz), CEM-1, 150 x 75 mm
    • Safety: Acc. to EN60065, creep age and clearance minimum distance 6.4 mm
    • EMI: Acc. to with EN50022-Class B

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EVL6566B-40WSTB L6566BH
量産中
EAR99 ITALY - 購入 在庫チェック

販売代理店在庫EVL6566B-40WSTB

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代理店レポートによる在庫データ: 2020-05-31

EVL6566B-40WSTB

コア製品

L6566BH

製品ステータス

量産中

Budgetary Price (US$)*/Qty

販売代理店在庫EVL6566B-40WSTB

代理店名
地域 在庫 最小発注 パートナー企業リンク
DIGIKEY WORLDWIDE 3 1 発注する
MOUSER WORLDWIDE 15 1 発注する

代理店レポートによる在庫データ: 2020-05-31

代理店名

DIGIKEY

在庫

3

Min.Order

1

地域

WORLDWIDE 発注する

MOUSER

在庫

15

Min.Order

1

地域

WORLDWIDE 発注する

代理店レポートによる在庫データ: 2020-05-31

Budgetary Price (US$)* / Qty

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*)概算用の希望小売単価(US$)です。現地通貨でのお見積りについては、STのセールス・オフィスまたは販売代理店までお問い合わせください。

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技術文書

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      DB1293
      EVL6566B-40WSTB demonstration board 40 W wide input range flyback converter for digital consumer equipments using the L6566B
      1.1
      283.05 KB
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      DB1293

      EVL6566B-40WSTB demonstration board 40 W wide input range flyback converter for digital consumer equipments using the L6566B

    • 概要 バージョン サイズ アクション
      AN2749
      40 W wide input range flyback converter demonstration board for digital consumer equipment using the L6566B
      2.2
      1.83 MB
      PDF
      AN2749

      40 W wide input range flyback converter demonstration board for digital consumer equipment using the L6566B

関連資料

    • 概要 バージョン サイズ アクション
      eDesignSuite-The smart way to design your application 1.0
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      eDesignSuite-The smart way to design your application

法務

    • 概要 バージョン サイズ アクション
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      Terms of use

製品型番 製品ステータス パッケージ グレード RoHSコンプライアンスグレード WEEE Compliant 材料宣誓書**
EVL6566B-40WSTB
量産中
CARD Industrial Ecopack1 -

EVL6566B-40WSTB

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CARD

Material Declaration**:

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量産中

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CARD

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Industrial

RoHS Compliance Grade

Ecopack1

(**) st.comで提供している材料宣誓書は、パッケージ・ファミリ内で最も一般的に使用されているパッケージに基づく汎用ドキュメントの場合があります。そのため、特定の製品では100%正確ではない可能性があります。特定の製品情報については、セールスサポートまでお問い合わせください