Data Sheet (ADP1882-0.3-EVALZ)Table of ContentsFEATURES1APPLICATIONS1TYPICAL APPLICATIONS CIRCUIT1GENERAL DESCRIPTION1TABLE OF CONTENTS2REVISION HISTORY2SPECIFICATIONS3ABSOLUTE MAXIMUM RATINGS5THERMAL RESISTANCE5BOUNDARY CONDITION5ESD CAUTION5PIN CONFIGURATION AND FUNCTION DESCRIPTIONS6TYPICAL PERFORMANCE CHARACTERISTICS7ADP1882/ADP1883 BLOCK DIAGRAM18THEORY OF OPERATION19STARTUP19SOFT START19PRECISION ENABLE CIRCUITRY19UNDERVOLTAGE LOCKOUT19THERMAL SHUTDOWN19PROGRAMMING RESISTOR (RES) DETECT CIRCUIT20VALLEY CURRENT-LIMIT SETTING20HICCUP MODE DURING SHORT CIRCUIT21SYNCHRONOUS RECTIFIER22POWER SAVING MODE (PSM) VERSION (ADP1883)22TIMER OPERATION22PSEUDO-FIXED FREQUENCY23APPLICATIONS INFORMATION24FEEDBACK RESISTOR DIVIDER24INDUCTOR SELECTION24OUTPUT RIPPLE VOLTAGE (ΔVRR)24OUTPUT CAPACITOR SELECTION24COMPENSATION NETWORK25Output Filter Impedance (ZFILT)25Error Amplifier Output Impedance (ZCOMP)25Error Amplifier Gain (GM)25Current-Sense Loop Gain (GCS)25Crossover Frequency25EFFICIENCY CONSIDERATIONS26Channel Conduction Loss26MOSFET Driver Loss26Switching Loss26Diode Conduction Loss27Inductor Loss27INPUT CAPACITOR SELECTION27THERMAL CONSIDERATIONS28DESIGN EXAMPLE28Input Capacitor28Inductor29Current Limit Programming29Output Capacitor29Feedback Resistor Network Setup29Compensation Network29Loss Calculations30EXTERNAL COMPONENT RECOMMENDATIONS31LAYOUT CONSIDERATIONS33IC SECTION (LEFT SIDE OF EVALUATION BOARD)36POWER SECTION36DIFFERENTIAL SENSING36TYPICAL APPLICATIONS CIRCUITS37DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT37SINGLE-INPUT, 600 kHz APPLICATIONS CIRCUIT37DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT38OUTLINE DIMENSIONS39ORDERING GUIDE39Size: 1.88 MBPages: 40Language: EnglishOpen manual