TEA1721 Isolated Universal Mains Flyback Converter Demo Board

TEA1721ADB1061
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The demo board is designed as an isolated 12 V and 3.3 V AC/DC SMPS for supplying up to 5 W to a load.

The switch-mode converter operates in flyback mode at a maximum frequency of around 51 kHz. Overcurrent and short-circuit protection are built in. The power consumption is between 10 mW and 20 mW under no-load conditions.

EMI filtering and surge protection using TVS diodes is implemented in this circuit.

Product Details

Supported Devices

Power Management

AC-DC Controllers with Integrated Power Switch

  • TEA1721BT: HV Start-up Flyback Controller with Integrated MOSFET for 5 W Applications, F~Burst = 905 Hz
  • TEA1721DT: HV Start-up Flyback Controller with Integrated MOSFET for 5 W Applications, F~Burst = 1270 Hz
  • TEA1721FT: HV Start-up Flyback Controller with Integrated MOSFET for 5 W Applications, F~Burst = 1750 Hz
  • TEA1723AT: HV Start-up Flyback Controller with Integrated MOSFET for 11 W Applications, F~Burst = 430 Hz
  • TEA1723BT: HV Start-up Flyback Controller with Integrated MOSFET for 11 W Applications, F~Burst = 905 Hz
  • TEA1723DT: HV Start-up Flyback Controller with Integrated MOSFET for 11 W Applications, F~Burst = 1270 Hz
  • TEA1723FT: HV Start-up Flyback Controller with Integrated MOSFET for 11 W Applications, F~Burst = 1750 Hz
  • TEA1721AT: HV Start-Up Flyback Controller with Integrated MOSFET for 5 W Applications, F~burst = 430 Hz

Features

Key Features

  • IC used: TEA1721AT
  • Efficiency: 79.3% at 115 V(AC)-60 Hz / 80.0% at 230 V(AC)-50 Hz

Power Management

  • AC line input voltage: 85 V(AC) to 265 V(AC)
  • Output voltage: 12 V(DC) and 3.3 V(DC)
  • Maximum output current: 12 V = 400 mA / 3.3 V = 400 mA
  • Maximum output power: 5 W
  • Output voltage stability: ±5 %

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TEA1721ADB1061
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Isolated universal mains flyback converter demo board.

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