VIPER53EDIP-E STMicroelectronics

VIPer53EDIP - E VIPer53ESP - E OFF-line Primary Switch Features Switching frequency up to 300kHz Current mode control with adjustable limitation Soft start and shut-down control Automatic burst mode in standby condition (Blue Angel compliant ) PowerSO-10 DIP-8 Undervoltage lockout with Hysteresis Typical applications cover offline power supplies Integrated start-up current source with a secondary power capability ranging up to Over-temperature protection 30W in wide range input voltage, or 50W in single European voltage range and DIP-8 package and Overload and short-circuit control 40W in wide range input voltage, or 65W in single Overvoltage protection European voltage range and PowerSO-10 In compliance with the 2002/95/EC European package, with the following benefits: Directive Overload and short-circuit events controlled by feedback monitoring and delayed device reset Description Efficient standby mode by enhanced pulse The VIPer53E combines an enhanced current skipping. mode PWM controller with a high voltage Integrated start-up current source is MDMesh Power MOSFET in the same package. disabled during normal operation to reduce the input power. Block diagram OSC DRAIN ON/OFF OSCILLATOR PWM LATCH OVERTEMP. S BLANKING TIME R1 DETECTOR SELECTION FF 1V Q R2 R3 R4 R5 PWM H UVLO COMPARATOR 0.5V COMP COMPARATOR 150/400ns VDD BLANKING CURRENT 8.4/ AMPLIFIER 11.5V STANDBY 8V Vcc COMPARATOR 0.5V I 125k COMP 4V OVERLOAD COMPARATOR 4.4V OVERVOLTAGE COMPARATOR 4.5V 18V TOVL COMP SOURCE January 2006 DocRev1 1/31 www.st.com 31Contents VIPer53EDIP - E / VIPer53ESP - E Contents 1 Electrical data 3 1.1 Maximum rating . 3 1.2 Thermal data . 3 2 Electrical characteristics . 4 3 Pin connections and function . 7 4 Rectangular U-I Output characteristics 8 5 Secondary Feedback Configuration Example 9 6 Current Mode Topology . 10 7 Standby Mode . 11 8 High Voltage Start-up Current Source 13 9 Short-Circuit and Overload Protection . 15 10 Regulation Loop Stability 16 11 Special Recommendations . 18 12 Software Implementation 19 13 Operation pictures . 20 14 Mechanical Data . 26 15 Order codes . 29 16 Revision history . 30 2/31 DocRev1