Data Sheet Rev. 1.10 / October 2012 ZSPM4013 High Efficiency 3A Synchronous Buck Converter Power and Precision ZSPM4013 High Efficiency 3A Synchronous Buck Converter Brief Description Benefits The ZSPM4013 is a DC/DC synchronous switching Increased battery life regulator with fully integrated power switches, Minimal external component count internal compensation, and full fault protection. (3 capacitors, 1 inductor) The 1MHz switching frequency enables using Inherent fault protection and reporting small filter components, resulting in reduced board space and reduced bill-of-materials costs. Available Support The ZSPM4013 utilizes current mode feedback in Evaluation Kit normal regulation pulse-width modulation (PWM) Documentation mode. When the regulator is disabled (EN pin is low), the ZSPM4013 draws less than 10A quies- Physical Characteristics cent current. Junction operating temperature -40C to 125C The ZSPM4013 integrates a wide range of Packaged in a 16pin QFN (3x3mm) protection circuitry, including input supply under- voltage lockout, output voltage soft start, current limit, V over-voltage, and thermal shutdown. OUT Related ZMDI Products The ZSPM4013 includes supervisory reporting ZSPM4011/ZSPM4012: 1A/2A synchronous through the PG (Power Good) open drain output to buck converters, available with adjustable out- interface other components in the system. put from 0.9 to 5V or fixed output voltages at 1.5V, 1.8V, 2.5V, 3.3V, 5.0V (16-lead 3x3mm QFN) Features ZSPM1000: >5A single-phase, single-rail, true Output voltage options (depends on order code): digital PWM controller (24-lead 4x4mm QFN) Fixed output voltages: 1.5V, 1.8V, 2.5V, 3.3V, or 5V with +/- 2% output tolerance ZSPM4013 Application Circuits Adjustable output voltage range: 0.9V to 5V Adjustable Output with +/- 1.5% reference BST CBST Wide input voltage range: VCC VCC 6V to 18V VSW VOUT C BYPASS L OUT R TOP COUT 1MHz +/- 10% fixed switching frequency R BOT 3A continuous output current FB VOUT High efficiency up to 95% 10 k EN EN (optional) Current mode PWM control with pulse- frequency modulation (PFM) mode for PG PG improved light load efficiency Voltage supervisor for V reported at the PG OUT Fixed Output pin BST Input supply under voltage lockout VCC VCC C BST Soft start for controlled startup with no CBYPASS VOUT VSW LOUT overshoot C OUT Full protection for over-current, over- FB temperature, and V over-voltage VOUT OUT 10k EN EN Less than 10A in Disabled Mode (optional) Low external component count PG PG For more information, contact ZMDI via analog zmdi.com. 2012 Zentrum Mikroelektronik Dresden AG Rev. 1.10 October 10, 2012. 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. GND GND ZSPM4013 ZSPM4013 PGND PGND