An isolated high-power LED drive power supply with multi-channel output current sharing and its realization method
A technology of LED drive and multi-channel output, which is applied in the direction of electric light source, electroluminescent light source, light source, etc., can solve the problems of increasing output voltage and reducing circuit reliability, and achieves simple circuit, improved current sharing accuracy, and current sharing high precision effect
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[0038] The present invention will be further described below in conjunction with the drawings and embodiments.
[0039] This embodiment provides an isolated high-power LED drive power supply with multiple output current sharing, such as figure 1 As shown, it includes a half-bridge CLL resonant network, a current sharing network, and an LED lamp load circuit; the LED lamp load circuit includes 2N LED lamp loads; the half-bridge CLL resonant network implements the 2N circuit through the current sharing network Current sharing output of LED lamp load;
[0040] The current-sharing network includes a first transformer to an Nth transformer, a first current-sharing capacitor to a 2N-th current-sharing capacitor, and a first diode to a 2N-th diode; the primary winding of the first transformer to the primary of the Nth transformer The windings are connected in series;
[0041] One end of the secondary winding of the first transformer is connected to one end of the first current sharing capa...
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