ßßDRIVENßBY E981.01 MULTIPHASE CONTROLLER Features General Description ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ ÿ E981.01 is a versatile wide input voltage multi channel and multi phase control IC for High Power Switch Mode Supplies in industrial and automotive applications. The IC is designed to drive up to nine single-switch lowside N-channel MOSFETs in Boost, SEPIC and Flyback topologies. Up to three outputs can be controlled by independent constant frequency regulation circuits. With the implemented phase shifting techniques the input and output current ripples are largely cancelled for low electromagnetic emission and small capacitor designs for long MTBF. Operating frequency can be set by an external resistor within a range of 100kHz to 500kHz per phase, resulting in total maximum switching frequency of 4.5 MHz. An internal softstart controller reduces startup current without additional external components. Different references are selectable individually for each of the three regulators for optimal performance in constant voltage or constant current mode. The E981.01 provides three independent CMOS compatible PWM inputs. In LED control applications, very high constant LED color dimming ratios of up to 1000:1 are possible. Built-in features, like thermal protection, over-voltage protection, low shutdown and quiescent current, the wide input voltage range and the large junction temperature range make the controller ideal for industrial, automotive and battery powered applications. SMPS controller for Boost, SEPIC and Flyback Converters Wide input voltage range from 5V to 60V 20μA typical shutdown current 9 phases configurable in 4 modes with up to 3 independent regulators for voltage & current regulation Open load stability and over-voltage protection adjustable switching frequency of up to 4.5 MHz Selectable internal or external voltage references Internal soft start time control Reduced input and output current ripple due to optimized mode-dependent phase distribution Integrated SMPS MOSFET drivers and load switches for wide range digital PWM control Under-voltage lockout and thermal shutdown - 40°C to 125°C operating temperature range LQFP64 exposed pad power package Applications ÿ ÿ ÿ ÿ ÿ ÿ High power industrial supplies High efficiency multiple string Power-LED drivers Wide range constant color PWM LED dimming Motor, actuator and valve driving Point-of-Load Power Supplies Renewable energy systems VIN VIN ON MOD1 MOD2 GND GND CGATE_1 VSM CGATE_2 CGATE_3 DRVS CGATE_4 PGND CGATE_5 E981.01 RSLP_A CGATE_6 CGATE_7 OSCTRIM CGATE_8 CGATE_9 CMP_A VOUT ISEN_9 ISEN_8 ISEN_7 ISEN_6 ISEN_5 ISEN_4 ISEN_3 ISEN_2 ISEN_1 FB_A Simplified application example ELMOS Semiconductor AG Info Sheet QM-No.: 25IS0023E.00 2010-01-21 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149 [email protected] | www.elmos.de Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2010 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.