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EVLALTAIR05T-5W

ALTAIR05T-800 5 W wide range CV-CC optoless adapter demonstration board
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This board implements a 5 W (5 V / 1 A) wide range mains battery charger with constant voltage-constant current, tailored for AC-DC chargers for mobile phones and adapters and other hand-held equipment.

The core of the application is the ALTAIR05T-800, the first “All-primary sensing switching regulator” of the new ALTAIR family.

The IC combines a high-performance low-voltage PWM controller chip and an 800 V, avalanche-rugged Power MOSFET in the same package.

The PWM chip is a quasi-resonant (QR) current-mode controller IC specifically designed for QR ZVS (zero voltage switching at switch turn-on) flyback converters.

The device is capable of providing constant output voltage (CV) and constant output current (CC) regulation using primary-sensing feedback. This eliminates the need for the optocoupler, the secondary voltage reference, as well as the current sensor, while still maintaining quite accurate regulation.

In addition, it is possible to compensate the voltage drop on the output cable, so as to improve CV regulation on the externally accessible terminals.

Extremely low consumption under no load conditions is ensured thanks to a controlled burst-mode operation that, along with the built-in high-voltage startup 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 flyback voltage is generated by the winding drops.

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Data Brief

Key Features

  • Universal input mains range: 90 - 264 Vac, frequency 45 - 65 Hz
  • Output voltage: 5 V@1 A continuous operation
  • Optoless constant voltage - constant current output regulation
  • Standby mains consumption: < 100 mW @ 230 Vac
  • Average efficiency: > 70%
  • EMI: According to EN55022-Class-B

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Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DB1534: ALTAIR05T-800 5 W wide range CV-CC optoless adapter demonstration board
1.0 66 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
zip
Gerber files for EVLALTAIR05T-5W
1.0.0 60 KB

Bill of Materials

Description Version Size
pdf
EVLALTAIR05-5W BOM
1.0 47 KB

Schematic Pack

Description Version Size
pdf
EVLALTAIR05-5W schematic
1.0.0 18 KB

Sample & Buy

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Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
EVLALTAIR05T-5WActiveALTAIR05T-800Buy Direct24.5Distributor reported inventory date: 2014-04-18
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA100
DIGIKEYOrder NowWORLDWIDE41
MOUSEROrder NowWORLDWIDE41
Ecopack1-

(*) 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
(**) 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.
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