Enpirion Power Datasheet EN5394QI 9A PowerSoC Voltage Mode Synchronous Buck PWM DC-DC Converter With Integrated Inductor Description Typical Application Circuit The EN5394QI is a Power Supply on a Chip (PwrSoC) DC to DC converter with integrated V PVIN IN VOUT V OUT inductor, PWM controller, MOSFETS, and 47F AVIN 2x47F compensation providing the smallest possible ENABLE PGND VFB solution size in a 68 pin QFN module. The SS switching frequency can be synchronized to an OCP ADJ external clock or other EN5394QIs with the 15nF PGND added capability of phasing multiple EN5394QIs AGND as desired. Other features include precision ENABLE threshold, pre-bias monotonic start-up, margining, and parallel operation. Figure 1: Typical Application Schematic EN5394QI is specifically designed to meet the precise voltage and fast transient requirements Features of present and future high-performance applications such as set-top boxes/HD DVRs, Integrated Inductor, MOSFETS, Controller in LAN/SAN adapter cards, audio/video equipment, a 8 x 11 x 1.85mm package optical networking, multi-function printers, test Wide input voltage range of 2.375V to 6.6V. and measurement, embedded computing, > 30W continuous output power. storage, and servers. Advanced circuit High efficiency, up to 93%. techniques, ultra high switching frequency, and Output voltage margining very advanced, high-density, integrated circuit Monotonic output voltage ramp during start- and proprietary inductor technology deliver high- up with pre-biased loads. quality, ultra compact, non-isolated DC-DC Precision Enable pin for accurate sequencing conversion. Operating this converter requires of power converters and Power OK signal. very few external components. Programmable soft-start time. Soft Shutdown. The Altera Enpirion integrated inductor solution significantly helps to reduce noise. The complete 4 MHz operating frequency with ability to power converter solution enhances productivity synchronize to an external system clock or by offering greatly simplified board design, layout other EN5394s. and manufacturing requirements. Programmable phase delays between synchronized units to allow reduction of All Altera Enpirion products are RoHS compliant input ripple. and lead-free manufacturing environment Master/slave configuration for paralleling compatible. multiple EN5394s for greater power output. Under Voltage Lockout, Over-current, Short Circuit, and Thermal Protection RoHS compliant, MSL level 3, 260C reflow. 1 www.altera.com/enpirion 03738 October 11, 2013 Rev EEN5394QI Applications Point of load regulation for low-power processors, network processors, DSPs, Applications requiring monotonic start-up with FPGAs, and ASICs pre-bias Low voltage, distributed power architectures Ripple voltage sensitive applications with 2.5V, 3.3V or 5V, 6V rails Noise sensitive applications Computing, broadband, networking, LAN/WAN, optical, test & measurement A/V, high density cards, storage, DSL, STB, DVR, DTV, Industrial PC Beat frequency sensitive applications Ordering Information Temp Rating Part Number (C) Package EN5394QI -40 to +85 68-pin QFN T&R EVB-EN5394QI QFN Evaluation Board Pin Configuration 49 1 S IN PGND Thermal Pads 70 48 2 S OUT PGND PGND 47 3 NC PGND 46 4 NC PGND 45 NC VOUT 5 69 44 6 NC VOUT 7 43 PVIN VOUT PGND VOUT 8 42 PVIN EN5394QI VOUT 9 41 PVIN VOUT 10 40 PVIN 11 VOUT 39 PVIN 12 VOUT 38 PVIN 13 VOUT PVIN 37 NC 14 PVIN 36 NC 15 PVIN 35 Figure 2: Pinout Diagram (Top View). All perimeter pins must be soldered to PCB. 2 www.altera.com/enpirion 03738 October 11, 2013 Rev E 16 NC 68 PGND 17 NC 67 PGND 18 NC 66 PGND 19 NC 65 PGND 20 NC 64 PGND 21 NC 63 VSENSE 22 NC 62 MAR2 23 NC 61 MAR1 24 NC 60 S DELAY NC(SW) 25 59 SS 26 NC(SW) 58 OCP ADJ 27 PGND 57 EAOUT 28 PGND 56 VFB 29 PGND 55 AGND 30 PGND 54 POK 31 PGND 53 AVIN 32 PGND 52 ENABLE 33 51 PGND EN PB 34 50 PVIN M/S