EN6360QI 8A Synchronous Highly Integrated DC-DC Power SoC Description Features The EN6360QI is a Power System on a Chip High efficiency, up to 96%. (PowerSoC) DC to DC converter in a 68 pin QFN Excellent ripple and EMI performance. module. It offers highly efficient performance Up to 8A continuous operating current. along with a rich and proven feature set that 1.2 MHz operating frequency with ability to facilitate ease of use in systems that are synchronize to an external clock source or sensitive to beat tones. The switching frequency serve as the primary source. can be synchronized to an external clock or other External programmable Frequency between EN6360QIs. Other features include precision 0.9MHz and 1.5MHz for application tuning. Enable threshold, pre-bias monotonic start-up, and parallel operation. 2% Output Voltage Accuracy over line, load, temp The EN6360QI is specifically designed to meet EN6360QI is a member of a family of devices the precise voltage and fast transient between 1A to 12A load capacity with small 2 requirements of present and future high- total PCB footprints from 156mm and 2 performance, low-power processor, DSP, FPGA, 227mm . memory boards and system level applications in Precision Enable threshold for sequencing. distributed power architecture. The devices Monotonic start-up with pre-bias. advanced circuit techniques, ultra high switching Programmable soft-start time. Soft Shutdown. frequency, and proprietary integrated inductor technology deliver high-quality, ultra compact, Master/slave configuration for parallel non-isolated DC-DC conversion. operation. Thermal shutdown, over current, short circuit, The Enpirion integrated inductor solution and under-voltage protection. significantly helps to reduce noise. The complete power converter solution enhances productivity RoHS compliant, MSL level 3, 260C reflow. by offering greatly simplified board design, layout Application and manufacturing requirements. All Enpirion products are RoHS compliant and lead-free Point of load regulation for low-power manufacturing environment compatible. processors, multi-core processors, communication processor, DSPs, FPGAs, and ASICs Low voltage, distributed power architectures with 0.8, 1.0, 1.2, 2.5V, 3.3V, 5V or 6V rails Blade servers, RAID storage cards, LAN/SAN adapter cards, wireless base stations, industrial automation, test and measurement, embedded computing, communications, and printers High efficiency 12V intermediate bus architectures Figure 1: BOM layout of EN6360QI solution for maximum Beat frequency sensitive applications 2 performance. Total Area 190 mm Ripple/Noise Sensitive Applications Beat frequency sensitive applications www.enpirion.com December 2010, Rev A EN6360QI Datasheet Schematic Pin Assignments (Top View) 0.1F VDDB BGND V V OUT IN PVIN VOUT 1 48 S IN NC R A C 2 47 BGND A ENA NC Thermal Pad 2x 46 VDDB 3 NC 47 F NC 2x22 F NC 4 45 AVIN 1206 NC 1206 NC 5 69 44 SS VFB R PVIN 1 NC 6 43 PGND PVIN NC 7 42 PVIN NC 8 41 15nF EN6360QI PVIN NC 9 40 PGND PVIN NC 10 39 PGND R AGND FQADJ 11 38 PVIN B NC 12 37 NC PVIN 36 NC 13 PVIN NC 14 35 PVIN Figure 2: Simple Application Schematic for maximum performance. Unless otherwise specified, all passive components can be 0402 or smaller. Figure 3: Pin Out Diagram (Top View) Ordering Information 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. Temp Rating Part Number (C) Package EN6360QI -40 to +85 68-pin QFN T&R EN6360QI-E QFN Evaluation Board Pin Description NAME PIN FUNCTION 1-15, 25, NC NO CONNECT: These pins must be soldered to PCB but not be electrically connected 44-45, to each other or to any external signal, voltage, or ground. These pins may be 64-68 connected internally. Failure to follow this guideline may result in device damage. 16-24 VOUT Regulated converter output. Connect to the load, and place output filter capacitor(s) between these pins and PGND pins 28-31. NC(SW) NO CONNECT: These pins are internally connected to the common switching node of 26-27, the internal MOSFETs. They must be soldered to PCB but not be electrically 62-63 connected to any external signal, ground, or voltage. Failure to follow this guideline may result in device damage. 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 PVIN Input power supply. Connect to input power supply, place input filter capacitor(s) between these pins and PGND pins 32-34. 46 VDDB Internal regulated voltage used for the internal control circuitry. Decouple with a 0.1uF capacitor to BGND for improved efficiency. 47 BGND See pin 46 description. Enpirion 2010 all rights reserved, E&OE Enpirion Confidential www.enpirion.com, Page 2 NC 15 68 NC 16 67 VOUT NC 17 66 VOUT NC 18 65 VOUT NC 19 64 VOUT NC 20 63 VOUT NC(SW) 21 VOUT 62 NC(SW) VOUT 22 61 EN PB 23 60 VOUT FQADJ 24 VOUT 59 NC(XREF) NC 25 58 VSENSE NC(SW) 26 57 SS NC(SW) 27 56 EAOUT PGND 28 55 VFB 29 PGND 54 M/S PGND 30 53 AGND 31 52 AVIN PGND 51 32 PGND ENABLE 33 50 PGND POK 34 49 PGND S OUT