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This paper proposes LED current control method of dimmable LED driver with dual active bridge (DAB) DC-DC converter for 1kW-class LED floodlight. The LED current control method is discussed in detail. The conventional LED driver cannot control turn-off time of LED current because the power flows from source side to LED floodlight side only. DAB converter is a bidirectional DC-DC converter formed by...
This paper proposes a new cooperative-control strategy for a 400-W class light-emitting diode (LED) driver consisting of two DC/DC converters operating in the discontinuous current mode (DCM). In the cooperative control method, one DC/DC converter is selected to supply the output current for the LED, based on the reference value of the LED current. Thus, the proposed cooperative-control strategy achieves...
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