Datasheet ADP1074 (Analog Devices) - 28

ADP1074 Data Sheet TYPICAL APPLICATION CIRCUITS VIN VOUT SR2 ACTIVE CLAMP NMOS PMOS SR1 RRAMP RSENSE VIN SR1 CS SR2 ADP1074 EN VDD2 VREG1 VREG2 NGATE COMP PGATE FB SYNC OVP SS1 SS2 DMAX PGOOD CSS1 RT MODE RDT PGND1 PGND2 RTOP AGND1 AGND2 RBOT
021 15627- Figure 25. Typical Application Circuit for Active Clamp Forward Topology Rev. C | Page 28 of 32 Document Outline FEATURES APPLICATIONS SIMPLIFIED BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY GENERAL DESCRIPTION SPECIFICATIONS INSULATION AND SAFETY RELATED SPECIFICATIONS REGULATORY INFORMATION DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS DIN V VDE V 0884-10 (VDE V 0884-10) INSULATION CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION DETAILED BLOCK DIAGRAM PRIMARY SIDE SUPPLY, INPUT VOLTAGE, AND LDO SECONDARY SIDE SUPPLY AND LDO PRECISION ENABLE SOFT START PROCEDURE OUTPUT VOLTAGE SENSING AND FEEDBACK LOOP COMPENSATION AND STEADY STATE OPERATION SLOPE COMPENSATION INPUT/OUTPUT CURRENT-LIMIT PROTECTION TEMPERATURE SENSING FREQUENCY SETTING (RT PIN) MAXIMUM DUTY CYCLE FREQUENCY SYNCHRONIZATION SYNCHRONOUS RECTIFIER (SR) DRIVERS OUTPUT OVERVOLTAGE PROTECTION (OVP) ACTIVE CLAMP (PGATE) LEADING EDGE BLANKING GATE DELAY AND SR DEAD TIME LIGHT LOAD MODE (LLM) AND SR PHASE IN EXTERNAL START-UP CIRCUIT SOFT STOP POWER GOOD OCP/FEEDBACK RECOVERY OUTPUT VOLTAGE TRACKING REMOTE SYSTEM RESET OCP COUNTER INSULATION LIFETIME LAYOUT GUIDELINES TYPICAL APPLICATION CIRCUITS OUTLINE DIMENSIONS ORDERING GUIDE NOTES