ISL62386 High-Efficiency Quad Output System Power Supply Controller for Notebook Computers


Posted on Feb 7, 2014

The ISL62386 controller generates supply voltages for battery-powered systems. The ISL62386 includes two pulse-width modulation (PWM) controllers, adjustable from 0. 6V to 5. 5V, and two linear regulators, LDO5 and LDO3, that generate a fixed 5V output and a fixed 3. 3V output respectively. Each can deliver up to 100mA. The Channel 2 switching regula


ISL62386 High-Efficiency Quad Output System Power Supply Controller for Notebook Computers
Click here to download the full size of the above Circuit.

tor will automatically take over the LDO5 load when programmed to 5V output. This provides a large power saving and boosts efficiency. The ISL62386 includes on-board power-up sequencing, one power-good (PGOOD) output, digital soft-start, and an internal soft-stop output discharge that prevents negative voltages on shutdown. The patented R3 PWM control scheme provides a low jitter system with fast response to load transients. Light-load efficiency is improved with period-stretching discontinuous conduction mode (DCM) operation. To eliminate noise in audio frequency applications, an ultrasonic DCM mode is included, which limits the minimum switching frequency to approximately 28kHz.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Variable Bandpass Audio Filter Circuit
    Switching Regulator Converter Circuit
    Schematic Diagram Car Amplifier for MP3
    Transmitting audio over laser or LED
    vu meter 1
    State Variable Oscillator
    Electronic Roulette wheel with 20 LEDs and with 36 LEDs
    Buck power conversion by the MAX639 + 5V fixed output



    Top