TLD5099EP Multi Topology LITIX™ Controller IC Infineon Technologies TLD5099EP Multi Topology LITIX™ Power DC/DC Controller IC provides built-in diagnosis and protection features specially designed to drive LEDs. The Controller IC includes a pulse width modulator to quickly implement a dimming function with reduced color shifting and a spread spectrum modulator to improve the EMI performance. The TLD5099EP is designed to support fixed current and fixed voltage configurations in multiple topologies by simply adjusting the external components. These topologies include boost, buck, buck-boost, SEPIC, and flyback.