Multi-mode controller for SMPS

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  • The L6566BH is an extremely versatile current-mode primary controller IC, specifically designed for high-performance offline flyback converters running off rectified 3-phase input lines. It is also suited to single-stage, single-switch, input-current-shaping converters (single-stage PFC) for applications that must comply with EN61000-3-2 or JEITA-MITI regulations.

    Both fixed-frequency (FF) and quasi-resonant (QR) operation are supported. The user can choose either of the two depending on application needs. The device features an externally programmable oscillator: it defines the converter switching frequency in FF mode and the maximum allowed switching frequency in QR mode.
    When FF operation is selected, the ICs work as a standard current-mode controller with a maximum duty cycle limited to 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 turn-on. Under some conditions, ZVS (zero-voltage switching) can be achieved. The 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 startup circuit and the low quiescent current, helps keep the consumption from the mains low 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 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 (auto-restart or latch-mode selectable), and a second-level OCP that is invoked when the transformer saturates or there is a short-circuit of the secondary diode. A latched disable input allows easy implementation of OTP with an external NTC, while an internal 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 features of this device.

    主要特性

    • Selectable multimode operation: fixed frequency or quasi-resonant
    • On-board 840 V high voltage startup
    • Advanced light load management
    • Low quiescent current (< 3 mA)
    • Adaptive UVLO
    • Line feedforward for constant power capability vs. mains voltage
    • Pulse-by-pulse OCP, shutdown on overload (latched or auto-restart)
    • Transformer saturation detection
    • Programmable frequency modulation for EMI reduction
    • Latched or auto-restart OVP
    • Brownout protection
    • -600/+800 mA totem pole gate driver with active pull-down during UVLO
    • SO16N package

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L6566BH SO-16 Tube
Active
0.75 1000 EAR99 CHINA 查看供货情况

Distributor availability ofL6566BH

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DIGIKEY WORLDWIDE 998 1 Order Now
RS COMPONENTS EUROPE 850 1 Order Now
FUTURE WORLDWIDE 450 1 Order Now
ARROW EUROPE 50 0 Order Now
ARROW AMERICA 588 1000 Order Now
MOUSER WORLDWIDE 1062 1 Order Now
RUTRONIK EUROPE 100 50 Order Now

代理商库存报告日期: 2019-08-22

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588

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1000

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1062

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代理商库存报告日期: 2019-08-22

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L6566BHTR SO-16 Tape And Reel
Active
0.75 1000 EAR99 CHINA 查看供货情况

Distributor availability ofL6566BHTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 674 1 Order Now
ARROW EUROPE 12500 0 Order Now
Newark Element14 AMERICA 625 0 Order Now
MOUSER WORLDWIDE 1210 1 Order Now
Farnell Element14 EUROPE 1067 1 Order Now

代理商库存报告日期: 2019-08-22

代理商名称

DIGIKEY

库存

674

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1

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WORLDWIDE Order Now

ARROW

库存

12500

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0

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EUROPE Order Now

Newark Element14

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625

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0

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AMERICA Order Now

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库存

1210

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1

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1067

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代理商库存报告日期: 2019-08-22

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L6566BH

封装

SO-16

包装类型

Tube

Unit Price (US$)

0.75*

Distributor availability ofL6566BH

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 998 1 Order Now
RS COMPONENTS EUROPE 850 1 Order Now
FUTURE WORLDWIDE 450 1 Order Now
ARROW EUROPE 50 0 Order Now
ARROW AMERICA 588 1000 Order Now
MOUSER WORLDWIDE 1062 1 Order Now
RUTRONIK EUROPE 100 50 Order Now

代理商库存报告日期: 2019-08-22

代理商名称

DIGIKEY

库存

998

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

850

Min.Order

1

地区

EUROPE Order Now

FUTURE

库存

450

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

50

Min.Order

0

地区

EUROPE Order Now

ARROW

库存

588

Min.Order

1000

地区

AMERICA Order Now

MOUSER

库存

1062

Min.Order

1

地区

WORLDWIDE Order Now

RUTRONIK

库存

100

Min.Order

50

地区

EUROPE Order Now

代理商库存报告日期: 2019-08-22

供货状态

Active

Unit Price (US$)

0.75

数量

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L6566BHTR

封装

SO-16

包装类型

Tape And Reel

Unit Price (US$)

0.75*

Distributor availability ofL6566BHTR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 674 1 Order Now
ARROW EUROPE 12500 0 Order Now
Newark Element14 AMERICA 625 0 Order Now
MOUSER WORLDWIDE 1210 1 Order Now
Farnell Element14 EUROPE 1067 1 Order Now

代理商库存报告日期: 2019-08-22

代理商名称

DIGIKEY

库存

674

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

12500

Min.Order

0

地区

EUROPE Order Now

Newark Element14

库存

625

Min.Order

0

地区

AMERICA Order Now

MOUSER

库存

1210

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1067

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-08-22

供货状态

Active

Unit Price (US$)

0.75

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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产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
L6566BH
Active
SO-16 工业 Ecopack2
L6566BHTR
Active
SO-16 工业 Ecopack2

L6566BH

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6566BHTR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

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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