SRK2001

Active

Adaptive synchronous rectification controller for LLC resonant converter

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Product overview

Description

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.
  • All 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

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Related Applications

Industrial

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      EVL-SRK2001-HVS

      Active

      Evaluation board for SRK2001 adaptive synchronous rectification controller for LLC resonant converter with high voltage external sensing MOSFETs

      PSU and Converter Solution Eval Boards --
      EVL-SRK2001-HVS

      Description:

      Evaluation board for SRK2001 adaptive synchronous rectification controller for LLC resonant converter with high voltage external sensing MOSFETs

      STEVAL-ISA165V1

      Active

      Evaluation board: SRK2001 adaptive synchronous rectification controller for LLC resonant converters with STP120N4F6

      PSU and Converter Solution Eval Boards ST
      STEVAL-ISA165V1

      Description:

      Evaluation board: SRK2001 adaptive synchronous rectification controller for LLC resonant converters with STP120N4F6

      STEVAL-ISA170V1

      Active

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

      PSU and Converter Solution Eval Boards ST
      STEVAL-ISA170V1

      Description:

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

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STMicroelectronics - SRK2001

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
SRK2001
Active
SSOP 10 Industrial Ecopack2
SRK2001TR
Active
SSOP 10 Industrial Ecopack2

SRK2001

Package:

SSOP 10

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SSOP 10

Grade

Industrial

RoHS Compliance Grade

Ecopack2

SRK2001TR

Package:

SSOP 10

Material Declaration**:

PDF XML

Marketing Status

Active

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
SRK2001TR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel SSOP 10 - - CHINA 0.9196 / 1k
SRK2001 No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tube SSOP 10 - - CHINA 0.9196 / 1k

SRK2001TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.9196 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SSOP 10

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.9196 / 1k

Country of Origin

CHINA

SRK2001

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.9196 / 1k

ECCN (EU)

NEC

Packing Type

Tube

Package

SSOP 10

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.9196 / 1k

Country of Origin

CHINA

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors