Enpirion Power Datasheet ER2120QI 2A Synchronous Buck Regulator with Integrated MOSFETs DS-1042 Datasheet The Altera Enpirion ER2120QI is a synchronous buck Features controller with internal MOSFETs packaged in a small Up to 2A Continuous Output Current 4mmx4mm QFN package. The ER2120QI can support a Integrated MOSFETs for Small Regulator Footprint continuous load of 2A and has a very wide input voltage range. With the switching MOSFETs integrated into the IC, Adjustable Switching Frequency, 500kHz to 1.2MHz the complete regulator footprint can be very small and provide Tight Output Voltage Regulation, 1% Over-temperature a much more efficient solution than a linear regulator. Wide Input Voltage Range, 5V 10% or 5.5V to 14V The ER2120QI is capable of stand-alone operation or it can be Wide Output Voltage Range, from 0.6V used in a master slave combination for multiple outputs that Simple Single-Loop Voltage-Mode PWM Control Design are derived from the same input rail. Multiple slave channels Input Voltage Feed-Forward for Constant Modulator Gain (up to six) can be synchronized. This method minimizes the Fast PWM Converter Transient Response EMI and beat frequencies effect with multi-channel operation. Lossless R High Side and Low Side Overcurrent DS(ON) The switching PWM controller drives two internal N-Channel Protections MOSFETs in a synchronous-rectified buck converter topology. Undervoltage Detection The synchronous buck converter uses voltage-mode control Integrated Thermal Shutdown Protection with fast transient response. The switching regulator provides Power-Good Indication 1% over line, load, a maximum static regulation tolerance of Adjustable Soft-Start and temperature ranges. The output is user-adjustable by Start-Up with Pre-Bias Output means of external resistors down to 0.6V. Pb-free (RoHS Compliant) The output is monitored for undervoltage events. The switching regulator also has overcurrent protection. Thermal Applications shutdown is integrated. The ER2120QI features a bi-directional FPGA power Enable pin that allows the part to pull the enable pin low Point of Load Applications during fault detection. Graphics Cards POK delay for ER2120QI is 1ms typical (at 500kHz switching ASIC Power Supplies frequency). Embedded Processor and I/O Supplies DSP Supplies V IN 4.5V TO 5.5V POWER GOOD POWER GOOD POK POK PVIN V PVIN IN + + ENABLE EN ENABLE EN 5.5V TO 14V AVINO SYNC BOOT BOOT AVIN M/S SS AVIN ER2120QI ER2120QI V OUT V OUT AVINO SW SW SS + + SYNC PGND PGND M/S FSW FSW FB FB AGND COMP COMP AGND FIGURE 1. STAND-ALONE REGULATOR: V 5.5V TO 14V FIGURE 2. STAND-ALONE REGULATOR: V 4.5V TO 5.5V IN IN 2014 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, HARDCOPY, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as trademarks or service marks are the property of their respective holders as described at ISO www.altera.com/common/legal.html. Altera warrants performance of its semiconductor products to current specifications in accordance with 9001:2008 Altera s standard warranty, but reserves the right to make changes to any products and services at any time without notice. Altera assumes no 101 Innovation Drive Registered responsibility or liability arising out of the application or use of any information, product, or service described herein except as expressly agreed San Jose, CA 95134 to in writing by Altera. Altera customers are advised to obtain the latest version of device specifications before relying on any published information and before placing orders for products or services. www.altera.com March 2014 Altera Corporation Subscribe 09615 March 14, 2014 Rev APage 2 Ordering Information PART NUMBER PART TEMP. RANGE PACKAGE (Note 1) MARKING (C) (Pb-free) PKG. DWG. ER2120QI (Notes 1, 3) 2120 -40 to +85 24 Ld 4x4 QFN L24.4x4D EVB-ER2120QI Evaluation Board NOTES: 1. These Altera Enpirion Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Altera Enpirion Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. Pin Configuration ER2120QI (24 LD QFN) TOP VIEW 24 23 22 21 20 19 POK 1 18 PVIN AGND 2 17 SW EN 3 16 SW GND 25 SYNC 4 15 SW 5 14 M/S SW FSW 6 13 PGND 78 9 10 11 12 *See Functional Pin Descriptions beginning on page 13 for pin descriptions. ER2120QI 2A Synchronous Buck Regulator with Integrated MOSFETs March 2014 Altera Corporation 09615 March 14, 2014 Rev A COMP AVIN FB AVINO SS BOOT PGND PVIN PGND PVIN PGND PVIN