Adaptive synchronous rectification controller for LLC resonant converter

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  • The SRK2001 controller implements a control scheme specific for secondary side synchronous rectification in LLC resonant converters that use a transformer with center tap secondary winding for full wave rectification.

    It provides two high current gate drive outputs, each capable of driving one or more N-channel power MOSFETs. Each gate driver is controlled separately and an interlock logic circuit prevents the two synchronous rectifier MOSFETs from conducting simultaneously.
    The control scheme in this IC provides for each synchronous rectifier being switched on as the corresponding half-winding starts conducting and switched off as its current goes to zero.
    The innovative turn-on logic with adaptive masking time and the adaptive turn-off logic allows maximizing the conduction time of the SR MOSFETs eliminating the need of the parasitic inductance compensation circuit.
    The low consumption mode of the device allows to meet the most stringent requirement for converter power consumption in light-load/no load conditions.
    A noticeable feature is the very low external component count required.

    Key Features

    • Secondary side synchronous rectification controller optimized for LLC resonant converter
    • Dual gate driver for N-channel MOSFETs
    • Adaptive turn-off logic
    • Turn-on logic with adaptive masking time
    • Auto-compensation of parasitic inductance
    • Low consumption mode: 50 μA quiescent current
    • VCC operating voltage range 4.5 to 32 V
    • High voltage drain-to-source Kelvin sensing for each SR MOSFET
    • Operating frequency up to 500 kHz
    • 35 ns total delay at turn-off
    • Protection against current reversal
    • Safe management of load transient, light-load and startup conditions
    • Intelligent automatic sleep mode at light-load with user programmable enter/exit load levels, with soft transitions and function disable
    • Programmable exit load levels from burst mode
    • Compatible with standard level MOSFETs
    • SSOP10 package

样片和购买

产品型号
封装
包装类型
供货状态
预算价格(US$)
数量
ECCN (US)
Country of Origin
从分销商订购
从ST订购
SRK2001TR SSOP 10 Tape And Reel
批量生产
0.836 1000 EAR99 CHINA 查看供货情况

Distributor availability ofSRK2001TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 274 1 Order Now
RS COMPONENTS EUROPE 1990 1 Order Now
MOUSER WORLDWIDE 3128 1 Order Now
Farnell Element14 EUROPE 2455 1 Order Now

代理商库存报告日期: 2019-11-11

代理商名称

DIGIKEY

库存

274

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

1990

Min.Order

1

地区

EUROPE Order Now

MOUSER

库存

3128

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

2455

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-11

获取样片
SRK2001 SSOP 10 Tube
批量生产
0.836 1000 EAR99 MOROCCO 查看供货情况

Distributor availability ofSRK2001

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1956 1 Order Now
MOUSER WORLDWIDE 1595 1 Order Now
Farnell Element14 EUROPE 1998 1 Order Now

代理商库存报告日期: 2019-11-11

代理商名称

DIGIKEY

库存

1956

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1595

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1998

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-11

立即购买

SRK2001TR

封装

SSOP 10

包装类型

Tape And Reel

单价(US$)

0.836*

Distributor availability ofSRK2001TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 274 1 Order Now
RS COMPONENTS EUROPE 1990 1 Order Now
MOUSER WORLDWIDE 3128 1 Order Now
Farnell Element14 EUROPE 2455 1 Order Now

代理商库存报告日期: 2019-11-11

代理商名称

DIGIKEY

库存

274

Min.Order

1

地区

WORLDWIDE Order Now

RS COMPONENTS

库存

1990

Min.Order

1

地区

EUROPE Order Now

MOUSER

库存

3128

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

2455

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-11

供货状态

批量生产

单价(US$)

0.836

数量

1000

ECCN (US)

EAR99

Country of Origin

CHINA

SRK2001

封装

SSOP 10

包装类型

Tube

单价(US$)

0.836*

Distributor availability ofSRK2001

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 1956 1 Order Now
MOUSER WORLDWIDE 1595 1 Order Now
Farnell Element14 EUROPE 1998 1 Order Now

代理商库存报告日期: 2019-11-11

代理商名称

DIGIKEY

库存

1956

Min.Order

1

地区

WORLDWIDE Order Now

MOUSER

库存

1595

Min.Order

1

地区

WORLDWIDE Order Now

Farnell Element14

库存

1998

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-11-11

供货状态

批量生产

单价(US$)

0.836

数量

1000

ECCN (US)

EAR99

Country of Origin

MOROCCO

(*) 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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技术文档

    • 描述 版本 文档大小 操作
      DS10811
      Adaptive synchronous rectification controller for LLC resonant converter
      5.0
      456.94 KB
      PDF
      DS10811

      Adaptive synchronous rectification controller for LLC resonant converter

    • 描述 版本 文档大小 操作
      AN4677
      12 V - 150 W resonant converter with synchronous rectification based on L6563H, L6699 and SRK2001
      1.0
      3.11 MB
      PDF
      AN5034
      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller
      1.0
      6.38 MB
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      AN5118
      12 V – 150 W power supply based on STNRG011 digital combo and SRK2001 adaptive synchronous rectifier controller
      1.0
      5.26 MB
      PDF
      AN4674
      SRK2001 adaptive synchronous rectification controller for LLC resonant converter evaluation board family
      2.0
      963.78 KB
      PDF
      AN4677

      12 V - 150 W resonant converter with synchronous rectification based on L6563H, L6699 and SRK2001

      AN5034

      12 V - 210 W converter based on STCMB1, combo TM PFC, HB LLC and SRK2001, adaptive SR controller

      AN5118

      12 V – 150 W power supply based on STNRG011 digital combo and SRK2001 adaptive synchronous rectifier controller

      AN4674

      SRK2001 adaptive synchronous rectification controller for LLC resonant converter evaluation board family

    • 描述 版本 文档大小 操作
      DT0084
      Application of SRK2001 in higher output voltage circuits with external sensing MOSFETs
      1.0
      405.25 KB
      PDF
      DT0084

      Application of SRK2001 in higher output voltage circuits with external sensing MOSFETs

    • 描述 版本 文档大小 操作
      AN4677
      12 V - 150 W resonant converter with synchronous rectification based on L6563H, L6699 and SRK2001
      1.0
      3.11 MB
      PDF
      AN4674
      SRK2001 adaptive synchronous rectification controller for LLC resonant converter evaluation board family
      2.0
      963.78 KB
      PDF
      AN4677

      12 V - 150 W resonant converter with synchronous rectification based on L6563H, L6699 and SRK2001

      AN4674

      SRK2001 adaptive synchronous rectification controller for LLC resonant converter evaluation board family

演示和培训资料

    • 描述 版本 文档大小 操作
      EuP Lot 6 Tier2 Ecodesign requirements for Standby
      2.2 MB
      PDF
      Secondary regulation Synchronous rectification controllers
      2.35 MB
      PDF

      EuP Lot 6 Tier2 Ecodesign requirements for Standby

      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
      4.89 MB
      PDF

      Power Management Guide

产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
SRK2001
批量生产
SSOP 10 工业 Ecopack2
SRK2001TR
批量生产
SSOP 10 工业 Ecopack2

SRK2001

Package:

SSOP 10

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

SSOP 10

Grade

Industrial

RoHS Compliance Grade

Ecopack2

SRK2001TR

Package:

SSOP 10

Material Declaration**:

Marketing Status

批量生产

Package

SSOP 10

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.