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    C 3677 - DC/DC Converter: Page 1/3

    Uploaded by

    Petre Gabriel
    This document describes a DC/DC converter with the following key specifications: - It has an input voltage range of 160-320VDC and outputs 110VDC at a maximum of 14A. - The converter has a power rating of 1820W, 93% efficiency and operates at a switching frequency of around 33kHz. - Protection features include overvoltage protection, overload protection current limiting, input and output isolation of 3500VDC and 2100VDC respectively, and short circuit protection. - The unit measures 6U x 42TE x 220mm and has an operating temperature range of -20°C to +75°C.

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    © All Rights Reserved
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    C 3677 - DC/DC Converter: Page 1/3

    Uploaded by

    Petre Gabriel
    24 views3 pages
    This document describes a DC/DC converter with the following key specifications: - It has an input voltage range of 160-320VDC and outputs 110VDC at a maximum of 14A. - The converter has a power rating of 1820W, 93% efficiency and operates at a switching frequency of around 33kHz. - Protection features include overvoltage protection, overload protection current limiting, input and output isolation of 3500VDC and 2100VDC respectively, and short circuit protection. - The unit measures 6U x 42TE x 220mm and has an operating temperature range of -20°C to +75°C.

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    Original Title

    SpecC3600.Craftec

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    This document describes a DC/DC converter with the following key specifications: - It has an input voltage range of 160-320VDC and outputs 110VDC at a maximum of 14A. - The converter has a power rating of 1820W, 93% efficiency and operates at a switching frequency of around 33kHz. - Protection features include overvoltage protection, overload protection current limiting, input and output isolation of 3500VDC and 2100VDC respectively, and short circuit protection. - The unit measures 6U x 42TE x 220mm and has an operating temperature range of -20°C to +75°C.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    24 views3 pages

    C 3677 - DC/DC Converter: Page 1/3

    Uploaded by

    Petre Gabriel
    This document describes a DC/DC converter with the following key specifications: - It has an input voltage range of 160-320VDC and outputs 110VDC at a maximum of 14A. - The converter has a power rating of 1820W, 93% efficiency and operates at a switching frequency of around 33kHz. - Protection features include overvoltage protection, overload protection current limiting, input and output isolation of 3500VDC and 2100VDC respectively, and short circuit protection. - The unit measures 6U x 42TE x 220mm and has an operating temperature range of -20°C to +75°C.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 3

    C 3677 - DC/DC converter

    Input
    Nominal voltage 220 VDC
    Voltage range (160 - 320) V DC
    no load input power 10 W
    input protection with external fuse ( rating 20A )
    input fuse 20 A
    hold-up time approx. 10ms
    bursts acc. to EN 61000-4-4 (level 3)
    High energy pulses (surge) acc. to EN 61000-4-5 (level 3)
    Output
    Nominal voltage 110 VDC
    max. current output 1 14.00 A
    Power 1820.0 Watt
    turn on rise time 2ms typ.
    response time 2ms typ.
    Efficiency 93 %
    control IU characteristic
    line regulation ( 10%) 0.1%
    load regulation (10-90%) 0.2%
    load transient (10-90-10%) 6% typical
    ripple approx. 100mVpp
    short circuit protected standard
    overload protection current limited to 105 - 110% of full load
    overvoltage protection OVP switches off module with automatic return to operation
    remote sensing standard
    redundant operation yes, with decoupling diodes (option 'dd')
    parallel operation yes, current balancing by decoupling diodes or option 'cs'
    General
    temperature coefficient 0.02% / C typical
    operating temperature -20C to +75C (optional: -40C to +75C)
    load derating 2.5% / C from +55C
    storage temperature -40C to +85C
    cooling natural convection
    switching frequency approx. 33 kHz
    isolation resistance > 10M Ohm at 500 VDC
    isolation (input - ground) 3500.0 VDC
    isolation (output - ground) 2100.0 VDC
    isolation (input - output) 3500.0 VDC
    isolation voltage acc. to EN 60950, class 1 (SELV ask factory)
    safety acc. to EN 60950, class 1
    crepage distance acc. to VDE 0110, >= 4mm
    air distance acc. to VDE 0110, >= 3mm
    earth leakage < 3.5mA at 230 VAC, acc. to EN 60950
    EMC emission acc. to EN 55022 class A, optionally class B
    EMC immunity acc. to EN 55022 class A, optionally class B
    dimensions [H x W x D], 6U x 42 TE x 220mm, (8,66inch)
    weight 10 kg/ 22,1 lb
    CE marking yes
    MTBF approx. 100000h
    connector H 15 acc. to DIN 41612
    Page 1/3
    C 3677 - DC/DC converter
    Page 2/3
    C 3677 - DC/DC converter
    General Description
    DC / DC converter
    Full-bridge, DC-input, Single output

    1) Primary Circuit

    The input is connected to the primary switching system via RFI filter 2 and bridge-connected rectifier 3. The switching
    system is provided in a full-bridge connection. Switching transistors 6a and 6d as well as 6b and 6c are controlled by
    circuit 8 alternately conducting with variable pulse-width, connecting the rectified input voltage with alternating polarity to
    the primary winding of transformer 5. The signal across shunt 7 is used for current limiting for the protection of the
    semiconductors against excessive current.
    2) Secondary Circuit

    The voltage of the primary winding is transformed to the secondary side in the turns ratio of the windings, is then
    rectified by diodes 11a, 11b, 11c and 11d and filtered by choke 12 in conjunction with capacitor 14. The average value
    of the voltage across the capacitor depends on the input voltage and the on-/off-ratio of the switching transistors. It is
    conducted to the output terminals via ripple filter 16. The output voltage is connected via external sense leads to control
    circuit 18. There it is compared with a reference, and the error signal controls via an opto-coupler the switching
    transistors at the primary side.
    For overvoltage protection (OVP) circuit 17 senses internally the output voltage and turns off the switching transistors via
    an opto-coupler if a certain adjustable level is reached. The circuit automatically returns to operation with a delay of
    approximately 0,5 s but is repeatedly switched off if the voltage limit is exceeded again after every new start.For current
    limiting the signal across shunt 13 starts to reduce the output voltage if the current exceeds a certain limit (normally
    1.1-times the rated value). For the reason of dynamic stability this circuit responds with some delay whereas the primary
    limiting circuit acts nearly instantaneously for fast protection of the semiconductors.
    Page 3/3

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