TEA1721 Universal Mains White Goods Flyback SMPS Demo Board

TEA1721BDB1065
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This reference design demonstrates the TEA1721 as a -12 V and -3.3 V AC/DC SMPS converter that can provide 5 W into a load. The switch-mode converter operates in flyback mode at a maximum frequency of around 50 kHz. Over-current and short circuit protection are built in. Under no-load conditions, the power consumption of the flyback converter is around 20 mW. This application is typically suited for White Goods appliances and industrial applications.

Product Details

Supported Devices

Power Management

AC-DC Controllers with Integrated Power Switch

  • TEA1721AT: HV Start-Up Flyback Controller with Integrated MOSFET for 5 W Applications, F~burst = 430 Hz
  • 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

Features

Connectivity

  • Compatible with Universal Mains: 85 V (AC) to 265 V (AC)

Power Management

  • Dual output voltage: -12 V (DC) and -3.3 V (DC)
  • Maximum output current: -12 V = -400 mA; -3.3 V = -400 mA
  • Primary side voltage regulation removes the need for an optocoupler
  • Output voltage accuracy: -12 V = +5 % to -5 %
  • Output voltage regulation and stability: -12 V = ± 1 % (in load range 5 % to 100 %)
  • Total maximum power: 5 W
  • No-load power consumption: 20 mW
  • Efficiency: ±80 %

Size

  • Board dimensions: 34.3 mm x 34.3 mm x 21 mm (L x W x H)

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TEA1721BDB1065
End of Life

TEA1721 universal mains white goods flyback SMPS demo board.

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