AMG-LM302 Datasheet, PDF (1/23 Pages) alpha microelectronics gmbh – Ballast Controller for Metal Halide Lamps

AMG-LM302
Ballast Controller for Metal Halide Lamps
1. Functional Description of the AMG-LM302
The AMG-LM302 is a Ballast Controller IC for Metal Halide Lamps (HID, CDM, HQI…).
The AMG-LM302 integrates all functions necessary for control off Metal Halide lamps
including power factor correction (PFC), ignition voltage generation and overdrive, current
supply and power management. The ballast controller specifically supports high stability of
color temperature.
2. Features
PFC
 PFC operates in current controlled transition mode (TM) with overvoltage protection
 Separate undervoltage lockout for PFC and HID part
 Zero current detection for TM operation
 Real multiplier for excellent THD
 High pulse current driver output for HV Power MOS
 Internal reference voltage
HID
 Current mode controlled buck converter
 Buck converter with Driver for external transistor
 Power drive mode for HV MOSFETS
 Safe ignition through burst oscillation
 30kHz PWM in capture compare mode with maximum duty cycle of 50%
 Regulation of lamp power
 Slope compensation
 Open load and short-circuit detection
 Completely adjustable current and power ramp during lamp warm-up period
 Full bridge drive for acoustic control
 Automatic time control for all function
 Monitoring of lamp state
General
 Wide supply range of 14.5V to 35V
 Low power startup current
 Disable function to shut down the ballast and reduce power consumption
 Over temperature protection
 Short-circuit protected
 Ambient temperature range: -25°C to +125°C
 Package: TQFP48
3. Application
The AMG-LM302 is suitable for all application where the light spectrum and color temperature
of the sun, which is given by Metal Halide lamps, are needed. The AMG-LM302 controls the
whole lamp ballast and thus not only provides for a low cost solution, but also one, which is
high quality and easy to design.
AMG-LM302 Revision: A
29. Jul. 2010 © All rights reserved Page 1 of 23