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

    Voltage Test Probe
    Class-A audio Amplifier circuit
    Monostable to bistable relay with momentary switch
    Capacitance multiplier
    Pulse-train-to-sinusoid-converter
    Xilinx ISE Schematics Sequential Circuit
    Extend Timer Range For The 555
    audio graphic equalizer circuit
    Selecting video op amps



    Top