Si9114 Datasheet | TEMIC Semiconductors

Features - 15- to 200-V Input Range - Current-Mode Control - Internal Start-Up Circuit Description The Si9114 is a Bi C/DMOS current-mode pulse width modulation (PWM) controller IC for high-frequency dc/dc converters. Single-ended topologies (forward and flyback) can be implemented at frequencies up to 1 MHz. The oscillator has an internal divide-by-two that limits the duty ratio to 50%. An oscillator sync output allows converters to be synchronized in phase as well as in frequency, in a master/slave configuration. The output inverter can typicallysource 500rn A and sink 700 rn A. Shoot-through current is all but eliminated to Functional Block Diagram - Latched SHUIDOWN - Soft-Start - 1.5-MHz Error Amp minimize supply current requirements. The high-voltage DMOS transistor allows the IC to interface directly to bus voltages up to 200 V. Other features include a 1.5% accurate voltage reference, 1.5-MHz (min)...