Enpirion Power Datasheet EN6347QA 4A PowerSoC Voltage Mode Synchronous PWM Buck with Integrated Inductor Description Features The EN6347QA is a Power System on a Chip Integrated Inductor, MOSFETs, Controller (PowerSoC) DC-DC converter that is AEC-Q100 -40C to +105C Ambient Temperature Range qualified for automotive applications. It integrates AEC-Q100 Qualified for Automotive Applications MOSFET switches, small-signal circuits, Up to 4A Continuous Operating Current compensation, and the inductor in an advanced 4mm x 7mm x 1.85mm 38-pin QFN package. High Efficiency (Up to 95%) The EN6347QA is specifically designed to meet the Frequency Synchronization to External Clock precise voltage and fast transient requirements of Input Voltage Range (2.5V to 6.6V) present and future high-performance, low-power Programmable Light Load Mode processor, DSP, FPGA, memory boards and system 2 Optimized Total Solution Size (90mm ) level applications in distributed power architecture. The devices advanced circuit techniques, ultra high Output Enable Pin and Power OK switching frequency, and proprietary integrated Programmable Soft-Start inductor technology deliver high-quality, ultra Thermal Shutdown, Over-Current, Short Circuit, compact, non-isolated DC-DC conversion. and Under-Voltage Protection The Altera Enpirion power solution significantly helps RoHS Compliant, MSL Level 3, 260C Reflow in system design and productivity by offering greatly simplified board design, layout and manufacturing Applications requirements. In addition, a reduction in the number of vendors required for the complete power solution Automotive Applications helps to enable an overall system cost savings. Point of Load Regulation for Low-Power, ASICs Multi-Core and Communication Processors, DSPs, All Enpirion products are RoHS compliant and lead- FPGAs and Distributed Power Architectures free manufacturing environment compatible. High Efficiency 12V Intermediate Bus Architectures Beat Frequency/Noise Sensitive Applications Efficiency vs. Output Current EN6347QA 100 V OUT V IN 90 PVIN VOUT R A 80 560 AVIN Optional 70 C A PG VFB 60 22F 47F 50 1206 1210 PGND X7R PGND 40 CONDITIONS 2 X7R 90mm V = 5V LLM/ IN SS 30 R B AGND SYNC EN6347QA 20 4 mm x 7 mm VOUT = 3.3V LLM C SS 10 VOUT = 3.3V PWM 0 0.01 0.1 1 10 OUTPUT CURRENT (A) Figure 1. Simplified Applications Circuit Figure 2. Highest Efficiency in Smallest Solution Size www.altera.com/enpirion 10318 June 26, 2015 Rev G EFFICIENCY (%) EN6347QA Ordering Information Part Number Package Markings T (C) Package Description A EN6347QA N6347A -40 to +105 38-pin (4mm x 7mm x 1.85mm) QFN T&R EVB- N6347A QFN Evaluation Board EN6347QA Packing and Marking Information: www.altera.com/support/reliability/packing/rel-packing-and-marking.html Pin Assignments (Top View) 1 25 NC(SW) BGND 2 24 NC(SW) VDDB 39 3 23 NC BTMP KEEP OUT PGND NC 4 22 PG 5 VOUT 21 PVIN 6 20 VOUT PVIN 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. However, they 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 10 for details. NOTE C: White dot on top left is pin 1 indicator on top of the device package. Pin Description PIN NAME FUNCTION NO CONNECT These pins are internally connected to the common switching node of the 1-2, 12, NC(SW) internal MOSFETs. They are not to be electrically connected to any external signal, ground, or 34-38 voltage. Failure to follow this guideline may result in damage to the device. NO CONNECT These pins may be internally connected. Do not connect to each other or to 3-4 NC any other electrical signal. Failure to follow this guideline may result in device damage. Regulated converter output. Connect these pins to the load and place output capacitor 5-11 VOUT between these pins and PGND pins 13-15. Input/Output power ground. Connect these pins to the ground electrode of the input and output 13-18 PGND filter capacitors. See VOUT and PVIN pin descriptions for more details. www.altera.com/enpirion, Page 2 10318 June 26, 2015 Rev G 7 38 VOUT NC(SW) VOUT 8 37 NC(SW) 9 36 VOUT NC(SW) 10 VOUT 35 NC(SW) 11 34 VOUT NC(SW) NC(SW) 12 33 AVIN 13 32 PGND AGND 14 31 PGND VFB 15 30 PGND SS 16 29 RLLM PGND 28 17 POK PGND 18 27 ENABLE PGND KEEP OUT 19 26 LLM / SYNC PVIN