ZSPM4022-12 12V/12A Synchronous DC/DC Buck Regulator Brief Description Benefits The ZSPM4022-12 is a constant-frequency, synchronous DC/DC buck regulator featuring adaptive on-time control architecture. The ZSPM4022-12 operates over a 4.5V to 19V supply range (12V typical). It has an internal linear regulator that provides a regulated 5V to power the internal control circuitry. The ZSPM4022-12 operates at a constant 600kHz (typical) switching frequency in continuousconduction mode and can be used to provide up to 12A of output current. The output voltage is adjustable from 5.5V down to 0.8V. Under medium to heavy loads, the ZSPM4022-12 provides high efficiency and ultra-fast transient response via its rapid-control architecture. Under light load conditions, it maintains high efficiency and a superior transient response by transitioning to variable-frequency, discontinuous mode operation with its ultra-light-load architecture. The ZSPM4022-12 offers a full suite of protection features to ensure protection of the IC during fault conditions. These include under-voltage lockout to ensure proper operation under power-sag conditions; thermal shutdown; internal soft-start to reduce inrush current; foldback current limiting; and “hiccup” mode short-circuit protection. The ZSPM4022-12 includes a power good (PG) output to allow simple sequencing. Ultra-light load efficiency – up to 80% at 10mA Up to 95% efficiency Feedback reference accuracy as high as ±1% Features Rapid-control architecture enables operation with a high input/output voltage ratio (e.g., VIN = 19V and VOUT = 0.8V) and small output capacitance Adjustable output voltage from 0.8V to 5.5V Universally compatible with most output capacitors—stable with zero to high ESR Power good (PG) output Foldback current limiting and “hiccup” mode short-circuit protection Safe start-up into pre-biased loads Available Support Evaluation Kit Support documentation Physical Characteristics Input voltage range: 4.5V to 19V Output current: up to 12A Switching frequency: 600kHz Junction temperature: –40C to +125C 28-pin 5mm 6mm QFN package ZSPM4022-12 Typical Application Efficiency (VIN = 12V) vs. Output Current 100 95 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 1.0V 0.9V 0.8V EFFICIENCY (%) 90 85 80 75 70 65 60 55 VIN = 12V 50 0 3 6 9 12 15 OUTPUT CURRENT (A) For more information, contact ZMDI via [email protected] © 2014 Zentrum Mikroelektronik Dresden AG — Rev. 1.01 — July 20, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is subject to changes without notice. ZSPM4022-12 12V/12A Synchronous DC/DC Buck Regulator ZSPM4022-12 Functional Diagram Typical Applications Servers, work stations Routers, switches, and telecom equipment Base stations Ordering Information Product Sales Code Description Package ZSPM4022AA1W12 ZSPM4022-12 QFN28 5mmx6mm — Temperature range: –40C to +125C 7” reel with 1000 ICs ZSPM4022-12-KIT Evaluation Kit for ZSPM4022-12, including ZSPM4022-12 Evaluation Board. Kit Sales and Further Information www.zmdi.com [email protected] Zentrum Mikroelektronik Dresden AG Global Headquarters Grenzstrasse 28 01109 Dresden, Germany ZMD America, Inc. 1525 McCarthy Blvd., #212 Milpitas, CA 95035-7453 USA Central Office: Phone +49.351.8822.306 Fax +49.351.8822.337 USA Phone 1.855.275.9634 Phone +1.408.883.6310 Fax +1.408.883.6358 European Technical Support Phone +49.351.8822.7.772 Fax +49.351.8822.87.772 DISCLAIMER: This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Zentrum Mikroelektronik Dresden AG (ZMD AG) assumes no obligation regarding future manufacture unless otherwise agreed to in writing. The information furnished hereby is believed to be true and accurate. However, under no circumstances shall ZMD AG be liable to any customer, licensee, or any other third party for any special, indirect, incidental, or consequential damages of any kind or nature whatsoever arising out of or in any way related to the furnishing, performance, or use of this technical data. ZMD AG hereby expressly disclaims any liability of ZMD AG to any customer, licensee or any other third party, and any such customer, licensee and any other third party hereby waives any liability of ZMD AG for any damages in connection with or arising out of the furnishing, performance or use of this technical data, whether based on contract, warranty, tort (including negligence), strict liability, or otherwise. European Sales (Stuttgart) Phone +49.711.674517.55 Fax +49.711.674517.87955 Zentrum Mikroelektronik Dresden AG, Japan Office 2nd Floor, Shinbashi Tokyu Bldg. 4-21-3, Shinbashi, Minato-ku Tokyo, 105-0004 Japan ZMD FAR EAST, Ltd. 3F, No. 51, Sec. 2, Keelung Road 11052 Taipei Taiwan Phone +81.3.6895.7410 Fax +81.3.6895.7301 Phone +886.2.2377.8189 Fax +886.2.2377.8199 Zentrum Mikroelektronik Dresden AG, Korea Office U-space 1 Building 11th Floor, Unit JA-1102 670 Sampyeong-dong Bundang-gu, Seongnam-si Gyeonggi-do, 463-400 Korea Phone +82.31.950.7679 Fax +82.504.841.3026 © 2014 Zentrum Mikroelektronik Dresden AG — Rev. 1.01 — July 20, 2014. All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.