STMicroelectronics L6572
The L6572 is a high voltage half-bridge driver for current regulation, quasi-self-oscillating ballast. It contains all functions that are needed to preheat the filaments, to ignite and to operate a fluorescent lamp. The filaments are preheated before the lamp is re-ignited after every disconnection of the mains voltage.| Part No. | L6572 |
|---|---|
| Datasheet | L6572 Download |
| Manufacturer |  STMicroelectronics |
| Description | High voltage smart ballast controller |
| Buy | Stock & Price |
FEATURES
● 600 V half-bridge driver● Integrated bootstrap diode
● Failure protection logic
● Programmable deadtime
● Programmable preheated start
● Two-step dimming with programmable dimmed current
● Thermal powerboost
● Closed loop control operation SO14
APPLICATIONS
● CFLi● Electronic ballast Figure 1. Block diagram GND TSD VS COUNTER DAC IGNITION RECOGNI- TION 2 STEP DIMMING UVLO VREF OUTPUT STAGE DEAD TIME TPB ZVS HSD LSD CLOCK RATED CURRENT CURRENT REGULATION SIGNAL PROCESSING BOOT HVG OUT LVG SENSE RCL RPH RNO RDO RDT AM14881v1 October 2012 This is information on a product in full production. Doc ID 023882 Rev 1 1/22 22 L6572 1
DESCRIPTION
DESCRIPTION
During normal operation of the lamp, the ballast operates either with the nominal or with a reduced resonant current which results in a nominal or a reduced light output of the lamp. A change between those two possible light outputs of the lamp is triggered by disconnecting the mains voltage for a short time (two-step dimming). A...
