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  • DC DC Converter Circuit


    Basic Of DC DC Converter Module

    A DC-to-DC converter is a device that accepts a DC input voltage and produces a DC output voltage. Normally the output voltage produced is at a different voltage level than the input. DC to DC converters are used to provide noise isolation as well as power bus regulation. Some of the popular DC-to-DC converter topolopgies are:

    1. BUCK CONVERTER STEP-DOWN CONVERTER

    2. BOOST CONVERTER STEP-UP CONVERTER

    3. BUCK-BOOST CONVERTER

    Linear Technology DC DC Converter Module

    The 10A High efficiency DC/DC converter module LTM4600 is a complete 10A, DC/DC step down power supply. Included in the package are the switching controller, power FETs, inductor, and all support components.

    Operating over an input voltage range of 4.5V to 20V, the LTM4600 supports an output voltage range of 0.6V to 5V, set by a single resistor.

    This high efficiency design delivers 10A continuous current, needing no heat sinks or airflow to meet power specifications. Only bulk input and output capacitors are needed to finish the design. The low profile package (2.8mm) enables utilization of unused space on the bottom of PC boards for high density point of load regulation. High switching frequency and an adaptive on-time current mode architecture enables a very fast transient response to line and load changes without sacrificing stability. Fault protection features include integrated overvoltage and short circuit protection with a defeatable shutdown timer. A built-in soft-start timer is adjustable with a small capacitor.

    The features of this module are described below:

    Wide Input Voltage Range: 4.5V to 20V
    10A DC, 14A Peak Output Current
    Parallel Two µModule™ DC/DC Converters for 20A
    Output Current
    0.6V to 5V Output Voltage
    1.5% Output Voltage Regulation
    Ultrafast Transient Response
    Current Mode Control
    Up to 92% Efficiency
    Programmable Soft-Start
    Output Overvoltage Protection

    The typical application circuit of this device is as shown below.
    1

    Full detailed writeout with performance data can be downloaded from Linear Technology DC DC Converter Module.


    source www.electronics-project-design.com

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