Evaluation board: SRK2001 adaptive synchronous rectification controller for LLC resonant converters with STL140N4LLF5

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  • The STEVAL-ISA168V1 is a product evaluation board designed to demonstrate the performance of the SRK2001 synchronous rectification controller. The SRK2001 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 (for driving N-channel power MOSFETs). Each gate driver is controlled separately and an interlock logic circuit prevents the two synchronous rectifier (SR) MOSFETs from conducting simultaneously. Device operation is based on adaptive algorithms for both turn-on and turn-off of SR MOSFETs. During fast load transitions or during above resonance operation, a further turn-off mechanism is provided, based on a ZCD_OFF comparator that triggers the gate drive circuit for very fast MOSFET turn-off. The board includes two SR MOSFETs (PowerFlat package) and can be easily implemented in an existing converter as a substitute for rectifier diodes.

    Key Features

    • Synchronous rectifier for LLC resonant converter, with adaptive turn-on and turn-off
    • VCC range: 4.5 V to 32 V
    • Max frequency: 500 kHz
    • Dual gate drive for N-channel MOSFETs (strd level driver)
    • SR MOSFET type: STL140N4LLF5 (40 V – 2.75 mΩ) PowerFLAT
    • RoHS compliant

Sample & Buy

Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
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Order from ST
STEVAL-ISA168V1 SRK2001; STL140N4LLF5
Active
16 1 EAR99 ITALY Out of production No availability of distributors reported, please contact our sales office

STEVAL-ISA168V1

Core Product

SRK2001; STL140N4LLF5

Marketing Status

Active

Unit Price (US$)

16.0*

Unit Price (US$)

16

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

Out of production

(*) 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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Technical Documentation

    • Description Version Size Action
      DB2528
      Evaluation board: SRK2001 adaptive synchronous rectification controller for LLC resonant converters with STL140N4LLF5
      1.0
      208.26 KB
      PDF
      DB2528

      Evaluation board: SRK2001 adaptive synchronous rectification controller for LLC resonant converters with STL140N4LLF5

    • Description Version Size Action
      AN4674
      SRK2001 adaptive synchronous rectification controller for LLC resonant converter evaluation board family
      2.0
      963.78 KB
      PDF
      AN4674

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

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA168V1 gerber files 1.0
      4.93 MB
      ZIP

      STEVAL-ISA168V1 gerber files

    • Description Version Size Action
      STEVAL-ISA168V1 BOM 1.0
      8.19 KB
      PDF

      STEVAL-ISA168V1 BOM

    • Description Version Size Action
      STEVAL-ISA168V1 schematic 1.0
      44.72 KB
      PDF

      STEVAL-ISA168V1 schematic

Publications and Collaterals

    • Description Version Size Action
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA168V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA168V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

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.