Infineon TLD5099EP – Single-Channel Multitopology DC/DC Controller with Spread Spectrum and PMW engine
The TLD5099EP is the newest member of the well established LITIX Power Family. It is a LED boost controller with built in protection features. The controller concept of the TLD5099EP allows multiple configurations such as Boost, Buck, Buck-Boost, SEPIC and Flyback by simply adjusting the external components. Thanks to this the TLD5099EP is a quite easy to use and flexible device that comes without SPI but still with a quite powerful feature set. Main difference to the other family members TLD5097EP and TLD5098EP are the integrated Spread Spectrum and the integrated PWM engine.
TLD5099EP is a perfect choice when diagnostic as well as advanced dimming functionality like analog and digital dimming are required and where a DC/DC boost concept is needed like for Day-time-running lights or combined Low-/High-Beams.
Features
- Constant current or constant voltage regulation
- Switching frequency range from 100 kHz to 500 kHz
- Synchronization with external clock source
- Analog dimming and PWM dimming feature (embedded or exter-nal) to adjust average LED current
- Integrated PWM Engine and spread spectrum feature
- PWMO gate driver for PWM dimming and output disconnection
- Open circuit detection, short to GND protection, output overvoltage protection
- Internal soft start, over temperature shutdown
Benefits
- Flexibility (topologies to address different LED architectures/applications)
- High EMC performance
- Increased LED current accuracy
- Automotive Grade
Target applications
- Automotive interior and exterior lights
- LED daytime running lights, low beam, high beam or combined low- and high-beams
- Pre-regulator e.g. for rear light applications
Example of application diagram (Boost typology)
