 Hello, my name is Ryan Mantivier. I'm a Product Marketing Engineer at ST Microelectronics, and in this presentation, I'm going to talk about digital power control with ST NRG 011. Today, we're going to split our discussion into three key areas. First, we will briefly discuss the high level features of the ST NRG 011, digital combination, PFC, and LLC controller. Second, I will review the integrated features of the ST NRG 011 that make it an excellent choice in high efficiency power supplies. And finally, we will review the complete evaluation and prototype being equal systems available from ST Microelectronics. The ST NRG 011 is a digital combo IC that integrates both power factor correction and LLC resident controllers. This IC includes integrated controllers and gate drivers for the front end PFC MOSFETs as well as LLC half bridge drivers and high voltage startup circuit. The digital combo controller is an excellent middle ground to the fully analog combo controllers like ST CMB1 in a fully customized microcontroller based architecture. ST NRG 011 provides flexible digital control of the analog power conversion process without requiring the need to write software. You get the benefit of being able to fully monitor and control your digital power supply. This digital combo controller approach will substantially reduce your time to market with full control over the PFC and LLC. No load consumption is less than 100 milliwatts. Also, the integration of PFC, LLC controller and gate drivers bomb count is also very low. Here we see a more detailed look at the internals of the ST NRG 011. Highlights include built-in HV and low voltage driver with one amp peak output current. An integrated 8-bit microcontroller core and 10-bit analog to digital converter allow for precise control and monitoring of the digital power supply. Integrated non-volatile memory allows for end of line customization of every system built. UR and I2C communication interface facilitates on-the-fly configuration of the digital power supply as well as black box logging capability should there be any system failures. The front end PFC controller is a state machine that is event-driven, also known as a SMED. It regulates the PFC stage output voltage and the input current based on the feedback provided by the output voltage, resistance divider, and by the PFC choke auxiliary winding voltage. This SMED will automatically determine the optimal operating conditions of the PFC and implement valley skipping inverse mode when warranted by the active conditions of the supply. The implementation of the PFC algorithm is based on an ST patented ramp-enhanced constant-on-time controller. Recot features dual-speed loops to maintain distortion, maximize power factor, and compensate for input capacitive currents. The ST energy 011 implements an efficient LLC resident mixed mode controller. Here dual SMEDs are utilized to manage the MOSFET half-bridge of the LLC controller. The LLC controller is based on more unique ST intellectual property called timeshift control. Timeshift control provides two major advantages compared to direct frequency control. First, dynamic load performance is greatly improved, and second, it provides anti-capacitive mode protection. As an option to further increase the power supply efficiency, the dual secondary rectifier diodes could be upgraded to dual MOSFET based active rectifiers controlled by an SRK 2000 or SRK 2001. ST provides a fully integrated evaluation platform for testing ST NRG 011. This is an example 150 watt digital combo power supply with a synchronous rectifier on the secondary side. The solution is comprised of a 12-volt output 150 watt AC to DC power supply based on ST NRG 011 and SRK 2001. Interface tools for controlling the parameters of the power supply with the PC, and finally a graphical universal interface to make it easy to monitor and control the power supply. The interface board and the PC GUI are key pieces that accelerate customization of the power supply and evaluation. The interface board provides the means to provide electrical insulation between the PC and the ST NRG 011 board, as well as the ability to utilize a USB port to communicate and control the ST NRG 011 via the built-in UART. This board also provides the correct voltages and signals to program and read the E-squared prom. The software GUI is used to manage the non-volatile memory onboard the ST NRG 011 as well as the E-squared prom read and write. It also allows the readback of real-time performance data of the power supply. The GUI provides control to more than 75 parameters to tailor the power supply performance to suit the application. These parameters include protection behaviors, filtering, PFC control, LOC, and burst mode parameters. This GUI in the evaluation kit can serve as the launch pad for your very own high-performance digital combination power supply with ST NRG 011. Thanks for tuning in to this presentation about the ST NRG 011 digital combo controller. Please visit www.st.com for more information.