A Wide-Voltage Isolated DC-DC Converter with Automatic Current Limiting Function
A DC-DC, automatic current limiting technology, applied in the field of converters, can solve the problems of large variation range and difficult design of isolated DC-DC converters, achieve simple voltage regulation control, simplify circuit layout design, control simple effect
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[0043] The present invention will be further described below. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0044] see figure 1 , the present invention provides a wide-voltage isolated DC-DC converter with automatic current limiting function, including 2 half-bridge circuits, 2 groups of LLC resonant cavities with split arrangement of resonant capacitors, 2 groups of voltage clamping diode pairs, 2 an isolation transformer and a three-phase bridge circuit with the same transformation ratio;
[0045] The structure is as follows:
[0046] The two half-bridge circuits are respectively connected to the respective input power supplies; the first half-bridge circuit includes 2 MOSFET tubes SA1-SA2; the second half-bridge circuit includes 2 MOSFET tubes SB1-SB2.
[0047]The first LLC resonant cavity circuit includes resonant inductance LrA, resonant ...
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