Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • The L6699 is a double-ended controller specific to series-resonant half bridge topology. Both LLC and LCC configurations are supported. It provides symmetrical 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. The deadtime inserted between the turn-off of one switch and the turn-on of the other one is automatically adjusted to best fit the transition times of the half bridge midpoint. 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 user to set the operating frequency range of the converter by means of a high-accuracy externally programmable oscillator.
    At startup, in addition to the traditional frequency-shift soft-start (the switching frequency starts from a preset maximum value and then decays as far as the steady-state value determined by the control loop), a proprietary circuit controls the half bridge to prevent hard-switching from occurring in the initial cycles because of the unbalance in the V·s applied to the transformer.
    At light load the IC can be forced to enter a controlled burst-mode operation that keeps the converter input consumption as low as possible.
    IC protection functions include a current sense input for OCP with frequency shift and delayed shutdown with automatic restart. Fast shutdown with automatic restart occurs if this first-level protection cannot control the primary current. Additionally, the IC prevents the converter from working in or too close to the capacitive mode, to guarantee soft-switching. A latched disable input (DIS) can be used to implement OTP and/or OVP. The combination of these protection features offers the highest degree of safety.
    Other functions include a not-latched active-low disable input with current hysteresis, useful for power sequencing or for brownout protection, and an interface with the PFC controller that enables the switching-off of the pre-regulator during fault conditions or during burst-mode operation.

    Key Features

    • Symmetrical duty cycle, variable frequency control of resonant half bridge
    • Self-adjusting adaptive deadtime
    • High-accuracy oscillator
    • 2-level OCP: frequency-shift and immediate shutdown
    • Interface with PFC controller
    • Anti-capacitive-mode protection
    • Burst-mode operation at light load
    • Input for brownout protection or power-on/off sequencing
    • “Safe-start” procedure prevents hard switching at startup
    • 600 V rail compatible high-side gate driver with integrated bootstrap diode and high dv/dt immunity
    • -300/800 mA high-side and low-side gate drivers with UVLO pull-down
    • SO16N package

Recommended for you

Related Applications

Lighting and Controls

Power Supplies and Converters

Smart Farming

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      STEVAL-ISA132V1

      Active

      300 W peak power (170 W continuous power) LLC resonant converter based on L6699, STB13N60M2 and STPS20M80CG

      PSU and Converter Solution Eval Boards ST

      STEVAL-ISA138V1

      Active

      19 V - 90 W adapter with PFC for laptop computers using the L6563H and L6699

      PSU and Converter Solution Eval Boards --

      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-ISA132V1

      Description:

      300 W peak power (170 W continuous power) LLC resonant converter based on L6699, STB13N60M2 and STPS20M80CG
      STEVAL-ISA138V1

      Description:

      19 V - 90 W adapter with PFC for laptop computers using the L6563H and L6699
      STEVAL-ISA170V1

      Description:

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

EDA Symbols, Footprints and 3D Models

STMicroelectronics - L6699

Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.

Symbols

Symbols

Footprints

Footprints

3D model

3D models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6699D
Active
SO-16 Industrial Ecopack2
L6699DTR
Active
SO-16 Industrial Ecopack2

L6699D

Package:

SO-16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SO-16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6699DTR

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.

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
L6699D Available at 6 distributors

Distributor availability ofL6699D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 540 1 Order Now
COMPEL EUROPE 1 1 Order Now
RS COMPONENTS EUROPE 26 1 Order Now
P&S ASIA/PACIFIC 417 1 Order Now
MOUSER WORLDWIDE 734 1 Order Now
Farnell Element14 EUROPE 621 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

540

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

26

Min.Order

1

Region

EUROPE Order Now

P&S

Stock

417

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

734

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

621

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

Buy Direct
Active
EAR99 NEC Tube SO-16 - - PHILIPPINES 0.919 / 1k
L6699DTR Available at 6 distributors

Distributor availability ofL6699DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5113 1 Order Now
COMPEL EUROPE 1480 1 Order Now
ARROW AMERICA 2500 2500 Order Now
P&S ASIA/PACIFIC 40 1 Order Now
MOUSER WORLDWIDE 3276 1 Order Now
Farnell Element14 EUROPE 1180 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

5113

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1480

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

P&S

Stock

40

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

3276

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1180

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 - - PHILIPPINES 0.919 / 1k

L6699D

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.919 / 1k

Distributor availability ofL6699D

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 540 1 Order Now
COMPEL EUROPE 1 1 Order Now
RS COMPONENTS EUROPE 26 1 Order Now
P&S ASIA/PACIFIC 417 1 Order Now
MOUSER WORLDWIDE 734 1 Order Now
Farnell Element14 EUROPE 621 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

540

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1

Min.Order

1

Region

EUROPE Order Now

RS COMPONENTS

Stock

26

Min.Order

1

Region

EUROPE Order Now

P&S

Stock

417

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

734

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

621

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

ECCN (EU)

NEC

Packing Type

Tube

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.919 / 1k

Country of Origin

PHILIPPINES

L6699DTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.919 / 1k

Distributor availability ofL6699DTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 5113 1 Order Now
COMPEL EUROPE 1480 1 Order Now
ARROW AMERICA 2500 2500 Order Now
P&S ASIA/PACIFIC 40 1 Order Now
MOUSER WORLDWIDE 3276 1 Order Now
Farnell Element14 EUROPE 1180 1 Order Now

Distributor reported inventory date: 2020-11-23

Distributor Name

DIGIKEY

Stock

5113

Min.Order

1

Region

WORLDWIDE Order Now

COMPEL

Stock

1480

Min.Order

1

Region

EUROPE Order Now

ARROW

Stock

2500

Min.Order

2500

Region

AMERICA Order Now

P&S

Stock

40

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

3276

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1180

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-11-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.919 / 1k

Country of Origin

PHILIPPINES

(*) 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