General description

The TEA1610 is a monolithic integrated circuit implemented in a high-voltage Diffusion Metal Oxide Semiconductor (DMOS) process. The circuit is a high voltage controller for a zero-voltage switching resonant converter. The IC provides the drive function for two discrete power MOSFETs in a half-bridge configuration. It also includes a level-shift circuit, an oscillator with accurately-programmable frequency range, a latched shut-down function and a transconductance error amplifier.

To guarantee an accurate 50 switching duty factor, the oscillator signal passes through a divide-by-two flip-flop before being fed to the output drivers.

The circuit is very flexible and enables a broad range of applications for different mains voltages.

Features

■ Integrated high voltage level-shift function

■ Integrated high voltage bootstrap diode

■ Low start-up current (green function)

■ Adjustable dead time

■ Transconductance error amplifier for ultra high-ohmic regulation feedback

■ Latched shut-down circuit for overcurrent and overvoltage protection

■ Adjustable minimum and maximum frequencies

■ Undervoltage lockout

Applications

■ TV and monitor power supplies

■ High voltage power supplies