SRK1001

批量生产
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Adaptive synchronous rectification controller for flyback converter

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  • The SRK1001 controller is designed for secondary side synchronous rectification (SR) in flyback converters, suitable for operation in QR and mixed CCM/DCM fixed frequency circuits.

    It provides a high-current gate-drive output capable of driving N-channel Power MOSFETs.
    The control scheme of this IC is such that the SR MOSFET is switched on as soon as current starts flowing through its body diode, and then switched off as current approaches zero.
    The fast turn-on with minimum delay and innovative adaptive turn-off logic allow maximizing the conduction time of the SR MOSFET and eliminating the effect of parasitic inductance in the circuit.
    The device enters low consumption mode when it detects primary controller burst-mode operation, or when the DIS pin is pulled up by the user, or when the SR MOSFET conduction falls below the programmed minimum TON. This improves the converter efficiency at light load, where synchronous rectification is no longer beneficial.
    After the converter restarts switching or the DIS pin goes low again and the IC detects that the current conduction in the rectifiers has increased 20% above the min TON programmed value, the IC exits low consumption mode and resumes switching operation.

    主要特性

    • Secondary side synchronous rectification controller optimized for flyback converter
    • Suitable for QR and mixed CCM/DCM fixed frequency operation
    • Wide VCC operating voltage range 3.7 to 32 V
    • CC regulation operation down to 2V output supported
    • Very low quiescent current in low consumption mode (170 µA)
    • High-voltage sensing input for SR MOSFET drain-source voltage (185 V AMR)
    • Operating frequency up to 300 kHz
    • High-current gate-drive output for N-MOSFET
    • Fast turn-on with minimum delay time and adaptive turn-off logic
    • Programmable minimum TON and TOFF
    • Low consumption mode entry by DIS pin, by primary side burst-mode detection or by detection of SR MOSFET conduction lower than programmed min. TON
    • SO8 package

样片和购买

产品型号
封装
包装类型
供货状态
ECCN (US)
Country of Origin
Approximate Price (US$)* / Qty
从ST订购
从分销商订购
SRK1001TR SO-8 Tape And Reel
批⁠量⁠生⁠产
EAR99 CHINA 0.84 / 1k 立即购买 查看供货情况

...的经销商可用性SRK1001TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 1000 1 马上订购
MOUSER WORLDWIDE 950 1 马上订购

代理商库存报告日期: 2020-03-29

代理商名称

DIGIKEY

库存

1000

Min.Order

1

地区

WORLDWIDE 马上订购

MOUSER

库存

950

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-03-29

SRK1001 SO-8 Tube
批⁠量⁠生⁠产
EAR99 - 0.84 / 1k 没有经销商,请联系我们的销售办事处

SRK1001TR

封装

SO-8

包装类型

Tape And Reel

Approximate Price (US$)* / Qty

0.84 / 1k

...的经销商可用性SRK1001TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 1000 1 马上订购
MOUSER WORLDWIDE 950 1 马上订购

代理商库存报告日期: 2020-03-29

代理商名称

DIGIKEY

库存

1000

Min.Order

1

地区

WORLDWIDE 马上订购

MOUSER

库存

950

Min.Order

1

地区

WORLDWIDE 马上订购

代理商库存报告日期: 2020-03-29

供货状态

批⁠量⁠生⁠产

Budgetary Price (US$)* / Qty

0.84 / 1k

ECCN (US)

EAR99

Country of Origin

CHINA

SRK1001

封装

SO-8

包装类型

Tube

Approximate Price (US$)* / Qty

0.84 / 1k

供货状态

批⁠量⁠生⁠产

Budgetary Price (US$)* / Qty

0.84 / 1k

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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评估工具

    • 产品型号

      SRK1001 adaptive synchronous rectification controller for flyback converter demonstration board with SR MOSFET

      SRK1001 adaptive synchronous rectification controller for flyback converter demonstration board with SR MOSFET

      45W USB Type-C Power Delivery 3.0 adapter based on STCH03, SRK1001 and STUSB4761

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技术文档

    • 描述 版本 文档大小 操作
      DS13155
      Adaptive synchronous rectification controller for flyback converter
      1.0
      600.58 KB
      PDF
      DS13155

      Adaptive synchronous rectification controller for flyback converter

    • 描述 版本 文档大小 操作
      AN5442
      45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD
      1.1
      14.03 MB
      PDF
      AN5333
      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family
      1.0
      1.75 MB
      PDF
      AN5442

      45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD

      AN5333

      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family

    • 描述 版本 文档大小 操作
      AN5442
      45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD
      1.1
      14.03 MB
      PDF
      AN5333
      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family
      1.0
      1.75 MB
      PDF
      AN5430
      The STUSB4761 PCB routing guidelines
      1.1
      396.92 KB
      PDF
      AN5442

      45W USB Type-C™ PD adapter board with controllers STCH03 QR flyback,SRK1001 adaptive synchronous rectifier and STUSB4761 USB Type-C™ PD

      AN5333

      SRK1001 adaptive synchronous rectification controller for flyback converters evaluation board family

      AN5430

      The STUSB4761 PCB routing guidelines

Presentations & Training Material

    • 描述 版本 文档大小 操作
      Secondary regulation Synchronous rectification controllers
      2.35 MB
      PDF

      Secondary regulation Synchronous rectification controllers

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      Power Management Guide 06.2019
      5.89 MB
      PDF

      Power Management Guide

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
SRK1001
批量生产
SO-8 Industrial Ecopack2
SRK1001TR
批量生产
SO-8 Industrial Ecopack2

SRK1001

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

SRK1001TR

Package:

SO-8

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SO-8

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

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