Enpirion Power Datasheet EV1380QI 8A PowerSoC Highly Integrated Synchronous DC-DC TM DDR2/3/4/QDR Memory Termination Description Features The EV1380QI is a Power System on a Chip High efficiency, up to 94%. (PowerSoC) DC to DC converter in a 68 pin QFN Output voltage tracks VDDQ +/- 1% TM that is optimized for DDR2, DDR3, and QDR Nominal 1.5MHz operating frequency with VTT applications. It requires a power supply ability to synchronize to an external clock (AVIN) for the controller and operates from an source or serve as the primary source. input supply (VDDQ). It provides a tightly Programmable soft-start time. Soft Shutdown. regulated and very stable output voltage (VTT) Master/slave configuration for parallel which tracks VDDQ while sinking and sourcing operation. up to 8A of output current. Altera Enpirions integrated inductor technology significantly helps Thermal shutdown, over current, short circuit, to reduce noise, and offers a high efficiency and under-voltage protection. solution for VTT applications with a very low RoHS compliant, MSL level 3, 260C reflow. external component count. Advanced circuit techniques, optimized switching Application frequency, and very advanced, high-density, integrated circuit and proprietary inductor Bus Termination: DDR2, DDR3, DDR4 & technology deliver high-quality, ultra compact, QDR memory non-isolated DC-DC conversion. SCHOTTKY The complete power converter solution enhances V CNTRL productivity by offering greatly simplified board V V DDQ SW TT VDDQ VOUT design, layout and manufacturing requirements. R R PD 1 R C EV1380QI A IN C OUT R C ENABLE C A AVIN VFB PGND PGND VREF FQADJ AGND C SS R R B D R C FS AVIN Figure 2: Typical Application Schematic (V is the DDQ memory core voltage V is memory termination TT voltage that tracks V ) DDQ 2 Figure 1: EV1380QI Total Solution Size ~200mm (not to scale). Does not show back-side components. www.altera.com/enpirion 08888 March 18, 2015 Rev C EV1380 Datasheet Ordering Information Pin Assignments (Top View) Temp Rating Part Number (C) Package EV1380QI -40 to +85 68-pin QFN T&R EVB-EV1380QI QFN Evaluation Board Figure 3: Pin Out Diagram (Top View) NOTE: NC pins are not to be electrically connected to each other or to any external signal, ground, or voltage. However, they must be soldered to the PCB. Failure to follow this guideline may result in part malfunction or damage. Pin Description NAME PIN FUNCTION 1-15, NC NO CONNECT: These pins must be soldered to PCB but not be electrically connected 25, 46- to each other or to any external signal, voltage, or ground. These pins may be 47, 64- connected internally. Failure to follow this guideline may result in device damage. 68 16-24 VOUT Regulated converter output. Connect to the load, and place output filter capacitor(s) between these pins and PGND pins 28-31. 26-27 SW These pins are internally connected to the common switching node of the internal MOSFETs. The anode of a schottky diode needs to be connected to these pins. The cathode of the diode needs to be connected to VDDQ. 28-34 PGND Input/Output power ground. Connect these pins to the ground electrode of the input and output filter capacitors. See VOUT and PVIN descriptions for more details. 35-43 VDDQ In DDR applications the input to this pin is the DDR core voltage. This is the input power supply to the power train which will be divided by two to create an output voltage that tracks with the input voltage applied to this pin. Place input filter capacitor(s) between these pins and PGND pins 32-34. 44 AGND2 Ground for the gate driver supply. Connect to the ground plane with a via. 45, 52 AVIN2, Analog input voltage for the controller circuits. Each of these pins needs to be AVIN1 separately connected to the 3.3V input supply. Decouple with a capacitor to AGND1. 48 S IN Digital Input. Depending on the M/S pin, this pin accepts either an input clock to phase lock the internal switching frequency or a S OUT signal from another Altera Enpirion device. Leave this pin floating if it is not used. 2 www.altera.com/enpirion 08888 March 18, 2015 Rev C