General description

The UBA2037 is a high voltage monolithic Integrated Circuit (IC) manufactured in a High Voltage Silicon On Insulator (HVSOI) process. This circuit is designed for driving MOSFETs in a full bridge configuration. In addition, it features a disable function, an internal adjustable oscillator and an external clock input function with a high-voltage level shifter for driving the bridge. To guarantee an accurate 50 duty cycle, the oscillator signal can be passed through a divider before being fed to the output drivers.

Features

■ Full bridge driver circuit

■ Integrated bootstrap diodes

■ 464 V integrated high voltage level shift function to drive HID lamps below ground level

■ 550 V series regulator input to make the internal supply

■ 550 V maximum bridge voltage

■ Accurate bridge disable function

■ Input for start-up delay

■ Adjustable oscillator frequency

■ Selectable frequency divider

■ Predefined bridge position during start-up

■ Adaptive non-overlap

Applications

■ The UBA2037 can drive (via the power MOSFETs) any kind of load in a full bridge configuration.

■ The circuit is especially designed as a commutator controller for HID lamps in projectors and general lighting applications.