Enpirion Power Datasheet EN2392QI 9A PowerSoC Voltage Mode Synchronous Buck With Integrated Inductor Not Recommended for New Designs Description Features The EN2392QI is a Power System on a Chip Integrated Inductor, MOSFETS, Controller 2 (PowerSoC) DC-DC converter. It integrates MOSFET Total Solution Size Estimate: 235mm switches, small-signal control circuits, compensation Wide Input Voltage Range: 4.5V 13.2V and an integrated inductor in an advanced 1% Initial Output Voltage Accuracy 11x10x3mm QFN module. It offers high efficiency, Master/Slave Parallel Operation (up to 4 devices) excellent line and load regulation over temperature. The EN2392QI operates over a wide input voltage Frequency Synchronization (External Clock) range and is specifically designed to meet the precise Output Enable Pin and Power OK Signal voltage and fast transient requirements of high- Programmable Soft-Start Time performance products. The EN2392QI features Pin Compatible with EN2390QI frequency synchronization to an external clock, power OK output voltage monitor, programmable soft-start Under Voltage Lockout Protection (UVLO) along with thermal and over current protection. The Over Current and Short Circuit Protection devices advanced circuit design, ultra high switching Pre-Bias Startup Protection frequency and proprietary integrated inductor Thermal Soft-Shutdown Protection technology delivers high-quality, ultra compact, non- o RoHS Compliant, MSL Level 3, 260 C Reflow isolated DC-DC conversion. The Altera Enpirion solution significantly helps in Applications system design and productivity by offering greatly Space Constrained Applications simplified board design, layout and manufacturing requirements. In addition, overall system level Distributed Power Architectures reliability is improved given the small number of Output Voltage Ripple Sensitive Applications components required with the Altera Enpirion Beat Frequency Sensitive Applications solution. Servers, Embedded Computing Systems, All Altera Enpirion products are RoHS compliant, LAN/SAN Adapter Cards, RAID Storage Systems, halogen free and are compatible with lead-free Industrial Automation, Test and Measurement, manufacturing environments. and Telecommunications Efficiency vs. Output Current 47nF 0.22F 100 V OUT PG BTMP VDDB BGND 90 V IN VOUT PVIN Optional 80 SW CBULK EN2392QI C A 70 4.75k 4.7 ON EAIN R ENABLE A OFF C 680pF OUT 60 2x REA R CA AVINO 22F VOUT = 3.3V 50 1206 AVIN 1F 1F VOUT = 2.5V VFB 40 SS 47nF VOUT = 1.8V CONDITIONS 30 M/S EN PB V = 12.0V VOUT = 1.2V IN PGND PGND 20 AVIN = 3.3V VOUT = 1.0V FQADJ AGND RCLX R 10 Dual Supply B 0 RFS R CLX 0 1 2 3 4 5 6 7 8 9 OUTPUT CURRENT (A) Figure 2. Highest Efficiency in Smallest Solution Figure 1. Simplified Application Circuit Size 10107 June 2, 2015 Rev C EFFICIENCY (%) EN2392QI Ordering Information Part Number Package Markings T Rating (C) Package Description AMBIENT EN2392QI EN2392QI -40 to +85 76-pin (11mm x 10mm x 3mm) QFN T&R EVB-EN2392QI EN2392QI QFN Evaluation Board Packing and Marking Information: www.altera.com/support/reliability/packing/rel-packing-and-marking.html Pin Assignments (Top View) S OUT 1 56 NC KEEP OUT 2 55 NC S IN 54 NC 3 BGND 4 53 NC VDDB 5 52 BTMP NC 51 NC 6 PG 50 NC 7 AVINO 49 NC 8 PVIN 77 KEEP OUT 48 9 PVIN NC PGND 10 47 NC PVIN 46 NC 11 PVIN 12 45 PVIN NC 13 44 NC PVIN 43 NC 14 PVIN 42 PVIN NC 15 41 PVIN 16 NC 40 17 PVIN NC 39 PVIN NC 18 Figure 3: Pin Out Diagram (Top View) NOTE A: NC pins are not to be electrically connected to each other or to any external signal, ground, or voltage. All pins including NC pins must be soldered to the PCB. Failure to follow this guideline may result in part malfunction or damage. NOTE B: Shaded area highlights exposed metal below the package that is not to be mechanically or electrically connected to the PCB. Refer to Figure 16 for details. NOTE C: White dot on top left is pin 1 indicator on top of the device package. www.altera.com/enpirion Page 2 10107 June 2, 2015 Rev C 76 NC 19 NC 75 20 NC VOUT 74 21 VOUT NC 73 22 VOUT NC NC 72 23 VOUT 71 24 NC(SW) VOUT 25 70 NC(SW) VOUT NC(SW) 69 26 VOUT 27 68 EN PB VOUT 67 28 NC VOUT 66 29 FQADJ NC 65 30 RCLX NC 64 31 SS NC(SW) 63 32 EAIN NC(SW) 62 33 VFB PGND 61 34 M/S PGND 60 AGND PGND 35 59 AVIN 36 PGND 58 37 ENABLE PGND 57 POK 38 KEEP OUT PGND