VIPER53SP-E STMicroelectronics

VIPer53 - E OFF-line primary switch General features European US / Wide range Type (195 - 265Vac) (85 - 265 Vac) DIP-8 50W 30W TM 65W 40W PowerSO-10 PowerSO-10 DIP-8 Features Description Switching frequency up to 300kHz Current limitation The VIPer53-E combines an enhanced current mode PWM controller with a high voltage Current mode control with adjustable limitation MDMesh Power Mosfet in the same package. Soft start and shut-down control Typical applications cover offline power supplies Automatic burst mode in standby condition with a secondary power capability ranging up to (Blue Angel compliant ) 30W in wide range input voltage, or 50W in single European voltage range and DIP-8 package, with Undervoltage lockout with Hysteresis the following benefits: HIgh voltage star-tup current source Overload and short circuit controlled by Overtemperature protection feedback monitoring and delayed device reset. Overload and short-circuit control Efficient standby mode by enhanced pulse skipping. Primary regulation or secondary loop failure protection through high gain error amplifier. Block diagram OSC DRAIN ON/OFF OSCILLATOR PWM LATCH OVERTEMP. S BLANKING TIME R1 DETECTOR SELECTION FF Q 1V R2 R3 R4 R5 H UVLO 0.5V COMP COMPARATOR 150/400ns VDD BLANKING CURRENT 8.4/ PWM AMPLIFIER STANDBY 11.5V COMPARATOR COMPARATOR 8V 0.5V 4V 125k 15V ERROR AMPLIFIER 4.35V OVERLOAD COMPARATOR OVERVOLTAGE COMPARATOR 4.5V 18V TOVL COMP SOURCE November 2006 Rev 1 1/36 www.st.com 36Contents VIPer53 - 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 Operation pictures 9 5 Primary regulation configuration example 15 6 Secondary feedback configuration example 17 7 Current mode topology 19 8 Standby mode . 20 9 High voltage Start-up current source 22 10 Short-circuit and overload protection 24 11 Transconductance error amplifier . 25 12 Special recommendations . 30 13 Software implementation 30 14 Package mechanical data 31 15 Order codes . 34 16 Revision history . 35 2/36