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.