 Hello, my name is Arvind Matsyaraja. I'm with ST Microelectronics Automotive Technology Division and it's my pleasure to introduce you to our Automotive Front Lighting LED Driver Chipset, the L99LD family. Now if you think about an automotive front lighting LED system, there could be multiple functions that you'd like that you'd have to drive, right? So there's your daytime running lights. For example, in this case, you've got a high beam, you've got a low beam function, you've got a signal light. There could also be a fog or some kind of a signature lighting. And each lighting function has a string of LEDs. Now the number of LEDs in that string will determine the voltage that's needed to drive that LED string. And also, you know, depending on the LED used, the current could be anywhere from half an amp to an amp, two amps and so on. The L99LD series of chipset or chips, they're designed to be very configurable. We have a single boost controller, a dual boost controller, we've got a single and dual buck converter chipset as well. So you can mix and match these devices to drive a configuration of lights that suits your needs. The biggest advantage of using this chipset is that you can optimize the number of devices, you know, because these are multi-converter chips, right, in one IC. So you can optimize the number of ICs on your circuit, therefore minimizing the actual IC count and improving the efficiency of your board, therefore reducing the real estate needle on your circuit board in order to drive all the lighting functions that you'd like to drive in your application. Alright, so let's talk about our buck converters, right? In this particular example, you're looking at the L99LD21. This particular chip, or IC, has two buck converters with built-in power MOSFETs, built-in current sensing, and has one boost controller. Now, the boost controller is designed to have a 180-degree phase shift function. So you could actually couple this with another boost controller and still have a very, very good EMC footprint in your application. The buck converters that are built into our ICs can drive strings that are up to one and a half amps, or three amps, depending on the IC that you choose to design into your system. And because there's built-in lossless current sensing, you don't need an external shunt resistor. You also don't need an external compensation network. So that really helps to minimize the component count and therefore improve the reliability in your circuit. For automotive applications, it's very, very important to have some kind of fallback or what we call limp-home functionality. So you can pre-program the performance of this chip in case there's loss of SPI or serial communication, or a loss of commands from the microcontroller. It'll fall back to a preset PWM duty cycle. It'll fall back to a preset current and therefore you will be able to drive your vehicle without losing the safety and the lighting functionality that you desire. A very big benefit of the diagnostics that are available to the user is that there's actually fault differentiation. So there's not just a flag that goes up and says, okay, we have an issue here. You're actually able to differentiate through the SPI interface, whether it's a current limitation situation that you have, or if it's an overvoltage or an over-temperature condition that you have. Also, these ICs are designed to operate minus 40 degrees C to 150 degrees Celsius. And they are fully automotive AECQ100 qualified. I'd like to thank you for your attention. If you'd like more information on the L99 LD chipset family, you could go to www.st.com. Click on the automotive section. You'll have all the information that you need. Thank you.