IMPROVED HIGH-VOLTAGE RESONANT CONTROLLER

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  • The L6599AT is an improved revision of the previous L6599A. It is a double-ended controller specific to series-resonant half bridge topology. It provides 50% complementary duty cycle: the high-side switch and the low-side switch are driven ON/OFF 180° out-of-phase for exactly the same time. Output voltage regulation is obtained by modulating the operating frequency. A fixed deadtime inserted between the turn-off of one switch and the turn-on of the other guarantees soft-switching and enables high-frequency operation.

    To drive the high-side switch with the bootstrap approach, the IC incorporates a high voltage floating structure able to withstand more than 600 V with a synchronous-driven high voltage DMOS that replaces the external fast-recovery bootstrap diode.
    The IC enables the designer to set the operating frequency range of the converter by means of an externally programmable oscillator.
    At startup, to prevent uncontrolled inrush current, the switching frequency starts from a programmable maximum value and progressively decays until it reaches the steady-state value determined by the control loop. This frequency shift is non-linear to minimize output voltage overshoots; its duration is programmable as well.
    At light load the IC may enter a controlled burst mode operation that keeps the converter input consumption to a minimum.
    IC functions include a not-latched active-low disable input with current hysteresis useful for power sequencing or for brownout protection, a current sense input for OCP with frequency shift and delayed shutdown with automatic restart. A higher level OCP latches off the IC if the first-level protection is not sufficient to control the primary current. Their combination offers complete protection against overload and short-circuits. An additional latched disable input (DIS) allows easy implementation of OTP and/or OVP.
    An interface with the PFC controller is provided that enables the pre-regulator to be switched off during fault conditions, such as OCP shutdown and DIS high, or during burst mode operation.

    Key Features

    • 50% duty cycle, variable frequency control of resonant half bridge
    • High accuracy oscillator
    • Up to 500 kHz operating frequency
    • Two-level OCP: frequency-shift and latched shutdown
    • Interface with PFC controller
    • Latched disable input
    • Burst mode operation at light load
    • Input for power-ON/OFF sequencing or brownout protection
    • Non-linear soft-start for monotonic output voltage rise
    • 600 V - rail compatible high-side gate driver with integrated bootstrap diode and high dv/dt immunity
    • -300/700 mA high-side and low-side gate drivers with UVLO pull-down
    • Guaranteed for extreme temperature ranges

Circuit Diagram

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Part Number
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L6599ATDTR SO-16 Tape And Reel
Active
1.17 1000 EAR99 CHINA Check Availability

Distributor availability ofL6599ATDTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 13152 1 Order Now
MOUSER WORLDWIDE 2046 1 Order Now
Farnell Element14 EUROPE 4970 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

13152

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2046

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4970

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

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L6599ATD SO-16 Tube
Active
1.17 1000 EAR99 CHINA Check Availability

Distributor availability ofL6599ATD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 997 1 Order Now
MOUSER WORLDWIDE 1004 1 Order Now
Farnell Element14 EUROPE 887 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

997

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1004

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

887

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Buy now

L6599ATDTR

Package

SO-16

Packing Type

Tape And Reel

Unit Price (US$)

1.17*

Distributor availability ofL6599ATDTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 13152 1 Order Now
MOUSER WORLDWIDE 2046 1 Order Now
Farnell Element14 EUROPE 4970 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

13152

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2046

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4970

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Marketing Status

Active

Unit Price (US$)

1.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

L6599ATD

Package

SO-16

Packing Type

Tube

Unit Price (US$)

1.17*

Distributor availability ofL6599ATD

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 997 1 Order Now
MOUSER WORLDWIDE 1004 1 Order Now
Farnell Element14 EUROPE 887 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

997

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

1004

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

887

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-11

Marketing Status

Active

Unit Price (US$)

1.17

Quantity

1000

ECCN (US)

EAR99

Country of Origin

CHINA

(*) 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
      DS6179
      Improved high voltage resonant controller
      8.0
      864.41 KB
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      DS6179

      Improved high voltage resonant controller

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      AN3106
      48 V - 130 W high-efficiency converter with PFC for LED street lighting applications
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      1.17 MB
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      AN3106

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Presentations & Training Material

    • Description Version Size Action
      Primary side regulation controllers portfolio
      1.1 MB
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      Smart street lighting solutions 2.1
      1.56 MB
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Publications and Collaterals

    • Description Version Size Action
      Power Management Guide 06.2019
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      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6599ATD
Active
SO-16 Industrial Ecopack2
L6599ATDTR
Active
SO-16 Industrial Ecopack2

L6599ATD

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6599ATDTR

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

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.