Secondary-Side Optocoupler Driver

Posted on Feb 5, 2014

The LT ®4430 drives the opto-coupler that crosses the galvanic barrier in an isolated power supply. The IC contains a precision-trimmed reference, a high bandwidth error amplifier, an inverting gain of 6 stage to drive the optocoupler and unique overshoot control circuitry. The LT4430`s 600mV reference provides ±0. 75% initial accuracy and ±1. 25%

Secondary-Side Optocoupler Driver
Click here to download the full size of the above Circuit.

tolerance over temperature. A high bandwidth 9MHz error amplifier permits simple frequency compensation and negligible phase shift at typical loop crossover frequencies. The opto-coupler driver provides 10mA of output current and is short-circuit protected. A unique overshoot control function prevents output overshoot on start-up and short-circuit recovery with a single capacitor.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    74*245-based motor driver
    Schematic Diagram 250mW 16-dB VHF amplifier circuit
    How should I wire up the circuit to connect a TSOP4838 (Radio Shack 276-64) infrared receiver to an Arduino
    A New Solar / Wind Charge Controller Based on the 555 Chip
    Nikon IR-Remote Control