SI9124

Si9124 New Product Vishay Siliconix 500-kHz Push-Pull DC-DC Converter With Integrated Secondary Synchronous Rectification Control FEATURES D 12-V to 72-V Input Voltage Range D Compatible with ETSI 300 132-2 100 V, 100-ms Transients D Integrated Push-Pull 1-A Primary Drivers D Voltage Mode Control D Voltage Feedforward Compensation D High Voltage Pre-Regulator Operates During Start-Up D Current Sensing On OUTB Primary Device D D D D D Hiccup Current Control During Shorted Load Low Input Voltage Detection Programmable Soft-Start Function Programmable Oscillator Frequency Over Temperature Protection APPLICATIONS D Network Cards D Power Supply Modules DESCRIPTION Si9124 is a dedicated push-pull controller IC ideally suited to fixed telecom dc-dc converter applications where high efficiency is required at low output voltages (e.g.