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  • The L6566B is an extremely versatile current-mode primary controller ICs, specifically designed for high-performance offline flyback converters. It is also suited for single-stage single-switch input-current-shaping converters (single-stage PFC) for applications supposed to comply with EN61000-3-2 or JEITA-MITI regulations.

    Both fixed-frequency (FF) and quasi-resonant (QR) operation are supported. The user can pick either of the two depending on application needs. The device features an externally programmable oscillator: it defines converter’s switching frequency in FF mode and the maximum allowed switching frequency in QR mode.
    When FF operation is selected, the ICs work like a standard current-mode controller with a maximum duty cycle limited at 70 % min. The oscillator frequency can be modulated to mitigate EMI emissions.
    QR operation, when selected, occurs at heavy load and is achieved through a transformer demagnetization sensing input that triggers MOSFET’s turn-on. Under some conditions, ZVS (zero-voltage switching) can be achieved. Converter’s power capability rise with the mains voltage is compensated by line voltage feedforward. At medium and light load, as the QR operating frequency equals the oscillator frequency, a function (valley skipping) is activated to prevent further frequency rise and keep the operation as close to ZVS as possible.
    With either FF or QR operation, at very light load the ICs enter a controlled burst-mode operation that, along with the built-in non-dissipative high-voltage start-up circuit and the low quiescent current, helps keep low the consumption from the mains and meet energy saving recommendations.
    An innovative adaptive UVLO helps minimize the issues related to the fluctuations of the self-supply voltage due to transformer’s parasites.
    The protection functions included in this device are: not-latched input undervoltage (brownout), output OVP (auto-restart or latch-mode selectable), a first-level OCP with delayed shutdown to protect the system during overload or short circuit conditions (autorestart or latch-mode selectable) and a second-level OCP that is invoked when the transformer saturates or the secondary diode fails short. A latched disable input allows easy implementation of OTP with an external NTC, while an internal thermal shutdown prevents IC overheating.
    Programmable soft-start, leading-edge blanking on the current sense input for greater noise immunity, slope compensation (in FF mode only), and a shutdown function for externally controlled burst-mode operation or remote ON/OFF control complete the equipment of this device.

    Key Features

    • Latched or autorestart OVP
    • Programmable frequency modulation for EMI reduction
    • -600/+800 mA totem pole gate driver with active pull-down during UVLO
    • Brownout protection
    • SO16N package
    • Pulse-by-pulse OCP, shutdown on overload (latched or autorestart)
    • Line feedforward for constant power capability vs. mains voltage
    • Selectable multi-mode operation: fixed frequency or quasi-resonant
    • Advanced light load management
    • On-board 700 V high-voltage start-up
    • Adaptive UVLO
    • Transformer saturation detection
    • Low quiescent current (< 3 mA)

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L6566B SO-16 Tube
アクティブ
0.6816 1000 EAR99 CHINA 在庫チェック

Distributor availability ofL6566B

代理店名
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RS COMPONENTS EUROPE 805 5 Order Now
ARROW EUROPE 1363 0 Order Now
P&S ASIA/PACIFIC 200 1 Order Now
MOUSER WORLDWIDE 1861 1 Order Now
Farnell Element14 EUROPE 400 1 Order Now

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RS COMPONENTS

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代理店レポートによる在庫データ: 2019-11-14

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L6566BTR SO-16 Tape And Reel
アクティブ
0.6816 1000 EAR99 CHINA 在庫チェック

Distributor availability ofL6566BTR

代理店名
地域 在庫 最小発注 Third party link
FUTURE WORLDWIDE 2500 2500 Order Now
ARROW EUROPE 10000 0 Order Now
Newark Element14 AMERICA 625 0 Order Now
ARROW AMERICA 198 1 Order Now
MOUSER WORLDWIDE 7383 1 Order Now
Farnell Element14 EUROPE 978 1 Order Now

代理店レポートによる在庫データ: 2019-11-14

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FUTURE

在庫

2500

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2500

地域

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ARROW

在庫

10000

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0

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EUROPE Order Now

Newark Element14

在庫

625

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0

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AMERICA Order Now

ARROW

在庫

198

Min.Order

1

地域

AMERICA Order Now

MOUSER

在庫

7383

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1

地域

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Farnell Element14

在庫

978

Min.Order

1

地域

EUROPE Order Now

代理店レポートによる在庫データ: 2019-11-14

サンプル入手

L6566B

パッケージ

SO-16

梱包タイプ

Tube

Unit Price (US$)

0.6816*

Distributor availability ofL6566B

代理店名
地域 在庫 最小発注 Third party link
RS COMPONENTS EUROPE 805 5 Order Now
ARROW EUROPE 1363 0 Order Now
P&S ASIA/PACIFIC 200 1 Order Now
MOUSER WORLDWIDE 1861 1 Order Now
Farnell Element14 EUROPE 400 1 Order Now

代理店レポートによる在庫データ: 2019-11-14

代理店名

RS COMPONENTS

在庫

805

Min.Order

5

地域

EUROPE Order Now

ARROW

在庫

1363

Min.Order

0

地域

EUROPE Order Now

P&S

在庫

200

Min.Order

1

地域

ASIA/PACIFIC Order Now

MOUSER

在庫

1861

Min.Order

1

地域

WORLDWIDE Order Now

Farnell Element14

在庫

400

Min.Order

1

地域

EUROPE Order Now

代理店レポートによる在庫データ: 2019-11-14

製品ステータス

アクティブ

Unit Price (US$)

0.6816

数量

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L6566BTR

パッケージ

SO-16

梱包タイプ

Tape And Reel

Unit Price (US$)

0.6816*

Distributor availability ofL6566BTR

代理店名
地域 在庫 最小発注 Third party link
FUTURE WORLDWIDE 2500 2500 Order Now
ARROW EUROPE 10000 0 Order Now
Newark Element14 AMERICA 625 0 Order Now
ARROW AMERICA 198 1 Order Now
MOUSER WORLDWIDE 7383 1 Order Now
Farnell Element14 EUROPE 978 1 Order Now

代理店レポートによる在庫データ: 2019-11-14

代理店名

FUTURE

在庫

2500

Min.Order

2500

地域

WORLDWIDE Order Now

ARROW

在庫

10000

Min.Order

0

地域

EUROPE Order Now

Newark Element14

在庫

625

Min.Order

0

地域

AMERICA Order Now

ARROW

在庫

198

Min.Order

1

地域

AMERICA Order Now

MOUSER

在庫

7383

Min.Order

1

地域

WORLDWIDE Order Now

Farnell Element14

在庫

978

Min.Order

1

地域

EUROPE Order Now

代理店レポートによる在庫データ: 2019-11-14

製品ステータス

アクティブ

Unit Price (US$)

0.6816

数量

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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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 Material Declaration**
L6566B
アクティブ
SO-16 インダストリアル Ecopack2
L6566BTR
アクティブ
SO-16 インダストリアル Ecopack2

L6566B

Package:

SO-16

Material Declaration**:

Marketing Status

アクティブ

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6566BTR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

アクティブ

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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