Enpirion Power Datasheet EN2390QI 9A PowerSoC Voltage Mode Synchronous Buck With Integrated Inductor Not Recommended for New Designs Description Features The EN2390QI 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 14V and an integrated inductor in an advanced 1% Initial Output Voltage Accuracy 11x10x3mm QFN module. It offers high efficiency, Master/Slave Configuration for Parallel Operation excellent line and load regulation over temperature. The EN2390QI operates over a wide input voltage o Up to 4 Devices with 29A capability range and is specifically designed to meet the precise Frequency Synchronization (External Clock) voltage and fast transient requirements of high- Output Enable Pin and Power OK Signal performance products. The EN2390QI features Programmable Soft-Start Time frequency synchronization to an external clock, power OK output voltage monitor, programmable soft-start Under Voltage Lockout Protection (UVLO) along with thermal and short circuit protection. The Short Circuit Protection devices advanced circuit design, ultra high switching Thermal Shutdown Protection frequency and proprietary integrated inductor o RoHS Compliant, MSL Level 3, 260 C Reflow technology delivers high-quality, ultra compact, non- isolated DC-DC conversion. Applications The Altera Enpirion solution significantly helps in Space Constrained Applications system design and productivity by offering greatly Distributed Power Architectures simplified board design, layout and manufacturing requirements. In addition, overall system level Output Voltage Ripple Sensitive Applications reliability is improved given the small number of Beat Frequency Sensitive Applications components required with the Altera Enpirion Servers, Embedded Computing Systems, solution. LAN/SAN Adapter Cards, RAID Storage Systems, All Altera Enpirion products are RoHS compliant, Industrial Automation, Test and Measurement, halogen free and are compatible with lead-free and Telecommunications manufacturing environments. 0.22F 47nF Efficiency vs. Output Current 100 V OUT PG BTMP VDDB BGND V IN 90 VOUT PVIN 80 EN2390QI 2x 4.75k 70 ON EAIN 47F R ENABLE A C A OFF 0805 2x 60 AVINO 22F R EA VOUT = 3.3V 50 1206 AVIN R 1F CA 1F VOUT = 2.5V VFB 40 SS 47nF VOUT = 1.8V CONDITIONS 30 M/S CGND V = 12.0V VOUT = 1.2V IN PGND PGND 20 AVIN = 3.3V VOUT = 1.0V RB FQADJ AGND RCLX 10 Dual Supply 0 RFS 100k 0 1 2 3 4 5 6 7 8 9 OUTPUT CURRENT (A) Figure 1. Simplified Applications Circuit (Footprint Optimized) Figure 2. Highest Efficiency in Smallest Solution Size 07515 June 2, 2015 Rev D EFFICIENCY (%) EN2390QI Ordering Information Part Number Package Markings T Rating (C) Package Description AMBIENT EN2390QI EN2390QI -40 to +85 76-pin (11mm x 10mm x 3mm) QFN T&R EVB-EN2390QI EN2390QI QFN Evaluation Board Packing and Marking Information: www.altera.com/support/reliability/packing/rel-packing-and-marking.html Pin Assignments (Top View) 1 56 S OUT NC KEEP OUT 2 55 S IN NC 3 54 BGND NC 4 53 NC VDDB NC 5 52 BTMP NC 6 51 PG 50 NC 7 AVINO NC 8 49 PVIN 77 KEEP OUT 9 48 PVIN NC PGND 10 47 PVIN NC 46 11 PVIN NC 12 45 PVIN NC NC 13 44 PVIN NC 14 43 PVIN 42 PVIN NC 15 41 16 PVIN 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 07515 June 2, 2015 Rev D 76 NC 19 NC 75 VOUT 20 NC 74 21 VOUT NC 73 22 NC VOUT 72 NC 23 VOUT 71 24 NC(SW) VOUT 70 NC(SW) 25 VOUT 69 NC(SW) 26 VOUT 68 27 CGND VOUT 67 28 NC VOUT 66 29 FQADJ NC 30 65 RCLX NC 64 31 SS NC(SW) 63 EAIN NC(SW) 32 33 62 PGND VFB 61 34 M/S PGND 60 35 AGND PGND 59 36 AVIN PGND 58 37 ENABLE PGND KEEP OUT 57 POK 38 PGND