HVLED805

Active

Off-line LED driver with primary-sensing up to 5W

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Product overview

Description

The HVLED805 is a high-voltage primary switcher intended for operating directly from the rectified mains with minimum external parts to provide an efficient, compact and cost effective solution for LED driving. It combines a high-performance low-voltage PWM controller chip and an 800V, avalanche-rugged power MOSFET, in the same package. The PWM is a current-mode controller IC specifically designed for ZVS (Zero Voltage Switching) fly-back LED drivers, with constant output current (CC) regulation using primary-sensing feedback. This eliminates the need for the opto-coupler, the secondary voltage reference, as well as the current sense on the secondary side, still maintaining a good LED current accuracy. Moreover it guarantees a safe operation when short circuit of one or more LEDs occurs.
In addition, the device can also provide a constant output voltage regulation (CV): it makes the application able to work safely when the LED string opens due to a failure.
Quasi-resonant operation is achieved by means of a transformer demagnetization sensing input that triggers MOSFET’s turn-on. This input serves also as both output voltage monitor, to perform CV regulation, and input voltage monitor, to achieve mains-independent CC regulation (line voltage feed forward).
The maximum switching frequency is top-limited below 166 kHz, so that at medium-light load a special function automatically lowers the operating frequency still maintaining the operation as close to ZVS as possible. At very light load, the device enters a controlled burst-mode operation that, along with the built-in high-voltage start-up circuit and the low operating current of the device, helps minimize the residual input consumption.
Although an auxiliary winding is required in the transformer to correctly perform CV/CC regulation, the chip is able to power itself directly from the rectified mains. This is useful especially during CC regulation, where the fly-back voltage generated by the winding drops.
In addition to these functions that optimize power handling under different operating conditions, the device offers protection features that considerably increase end-product’s safety and reliability: auxiliary winding disconnection or brownout detection and shorted secondary rectifier or transformer’s saturation detection. All of them are auto restart mode.
  • All features

    • 800 V, avalanche rugged internal power MOSFET
    • 5% accuracy on constant LED output current with primary control
    • Optocoupler not needed
    • Quasi-resonant (QR) zero voltage switching (ZVS) operation
    • Internal HV start-up circuit
    • Open or short LED string management
    • Automatic self supply
    • Input voltage feed-forward for mains independent cc regulation

Circuit Diagram

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All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      EVALHVLED805

      Active

      HVLED805 based evaluation board: 4.2 W isolated LED driver with primary side current regulation

      LED and General Lighting Solution Eval Boards --
      EVALHVLED805

      Description:

      HVLED805 based evaluation board: 4.2 W isolated LED driver with primary side current regulation

      STEVAL-ILL037V1

      Active

      3.2 W LED power supply based on HVLED805

      LED and General Lighting Solution Eval Boards --
      STEVAL-ILL037V1

      Description:

      3.2 W LED power supply based on HVLED805

EDA Symbols, Footprints and 3D Models

STMicroelectronics - HVLED805

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
HVLED805TR
Active
SO-16 Industrial Ecopack2

HVLED805TR

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.

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

LED Driver

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

LED custom

V This option is required.
A This option is required.
Ω This option is required.

LEDs

This option is required. And must be a whole positive number between 1 and 20.
This option is required. And must be a whole positive number between 1 and 20.

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
HVLED805TR Available at 1 distributors

Distributor availability ofHVLED805TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2489 1 Buy from Distributor

Distributor reported inventory date: 2021-10-20

Distributor Name

DIGIKEY

Stock

2489

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-20

Free Sample Buy Direct
Active
EAR99 NEC Tape And Reel SO-16 - - THAILAND 0.6185 / 1k

HVLED805TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.6185 / 1k

Distributor availability ofHVLED805TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2489 1 Buy from Distributor

Distributor reported inventory date: 2021-10-20

Distributor Name

DIGIKEY

Stock

2489

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2021-10-20

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

SO-16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

0.6185 / 1k

Country of Origin

THAILAND

(*) 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