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  • The L6566A is an extremely versatile current-mode primary controller IC specifically designed for high-performance offline flyback converters operated from front-end power factor correction (PFC) stages in applications in compliance 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's switching frequency in FF mode and the maximum allowed switching frequency in QR mode.
    When FF operation is selected, the IC works like a standard current-mode controller with a maximum duty cycle limited to 70% (min.).
    QR operation, when selected, occurs 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 input 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 IC enters a controlled burst-mode operation that, along with the built-in non-dissipative high-voltage startup circuit and a reduced quiescent current, helps keep the consumption from the mains low and meet energy saving recommendations.
    To allow the meeting of energy saving recommendations in two-stage power-factor-corrected systems as well, the L6566A provides an interface with the PFC controller that enables the re-regulator to be turned off at light load.
    An innovative adaptive UVLO helps minimize the issues related to fluctuations in 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 which 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 are all features of this device.

    主要特性

    • Selectable multi-mode operation: fixed frequency or quasi-resonant
    • Onboard 700 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
    • Switched supply rail for PFC controller
    • Latched or auto-restart OVP
    • Brownout protection
    • -600/+800 mA totem pole gate-driver with active pull-down during UVLO
    • SO16N package

电路原理图

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    • 产品型号
      状态
      描述
      类型
      供应商

      EVL6566A-75WADP

      批量生产

      19 V - 75 W笔记本电脑适配器,具有跟踪升压PFC预稳压器,使用L6563和L6566A

      电源和功率转换器解决方案评估板 --

      EVL6566A-75WES4

      批量生产

      符合最新能源之星标准的19 V - 75 W SMPS,使用L6563和L6566A

      电源和功率转换器解决方案评估板 --

      STEVAL-ISA149V1

      批量生产

      符合最新能源之星标准的19 V - 75 W SMPS,使用L6563和L6566A

      电源和功率转换器解决方案评估板 --
      EVL6566A-75WADP

      描述:

      19 V - 75 W笔记本电脑适配器,具有跟踪升压PFC预稳压器,使用L6563和L6566A
      EVL6566A-75WES4

      描述:

      符合最新能源之星标准的19 V - 75 W SMPS,使用L6563和L6566A
      STEVAL-ISA149V1

      描述:

      符合最新能源之星标准的19 V - 75 W SMPS,使用L6563和L6566A

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L6566A

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

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质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L6566A
批量生产
SO-16 工业 Ecopack2
L6566ATR
批量生产
SO-16 工业 Ecopack2

L6566A

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6566ATR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L6566ATR Available at 2 distributors

...的经销商可用性L6566ATR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 100 1 马上订购
ARROW AMERICA 7500 2500 马上订购

代理商库存报告日期: 2020-11-23

代理商名称

DIGIKEY

库存

100

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

库存

7500

Min.Order

2500

地区

AMERICA 马上订购

代理商库存报告日期: 2020-11-23

批量生产
EAR99 NEC Tape And Reel SO-16 - - PHILIPPINES 0.6816 / 1k
L6566A Available at 1 distributors

...的经销商可用性L6566A

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 510 1 马上订购

代理商库存报告日期: 2020-11-23

代理商名称

DIGIKEY

库存

510

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-11-23

批量生产
EAR99 NEC Tube SO-16 - - PHILIPPINES 0.6816 / 1k

L6566ATR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6816 / 1k

...的经销商可用性L6566ATR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 100 1 马上订购
ARROW AMERICA 7500 2500 马上订购

代理商库存报告日期: 2020-11-23

代理商名称

DIGIKEY

库存

100

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

库存

7500

Min.Order

2500

地区

AMERICA 马上订购

代理商库存报告日期: 2020-11-23

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

SO-16

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

0.6816 / 1k

Country of Origin

PHILIPPINES

L6566A

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6816 / 1k

...的经销商可用性L6566A

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 510 1 马上订购

代理商库存报告日期: 2020-11-23

代理商名称

DIGIKEY

库存

510

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-11-23

ECCN (EU)

NEC

包装类型

Tube

封装

SO-16

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

0.6816 / 1k

Country of Origin

PHILIPPINES

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商