TEA1721 Non-Isolated Buck/Boost Converter Demo Board

TEA1721ADB1060
No Longer Manufactured

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This board demonstrates a +12 V AC/DC buck and −12 V AC/DC non-isolated buck/boost-mode SMPS that can be used to supply up to 2.5 W into a load. Operation in buck or buck/boost-mode can be selected with the on-board jumper.

The switch mode converter operates at a maximum frequency of around 50 kHz.

Overcurrent and short-circuit protection are built in. Under no-load conditions, the power consumption of this converter is in the range of 10 mW. EMI filtering and (optional) surge voltage 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

Power Management

  • AC line input voltage: 85 V (AC) to 265 V (AC)
  • Output voltage: -12 V(DC) in Buck/boost mode
  • Maximum output current: -200 mA
  • Maximum output power: 2.5 W
  • Output voltage accuracy: +2 % to −5 %
  • Output voltage stability: ≥ ± 1 %
  • Efficiency: ± 77 % at full load
  • No-load power consumption: <10 mW

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TEA1721ADB1060-Image

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TEA1721ADB1060
No Longer Manufactured

TEA1721 Non-isolated buck/boost converter demo board.

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