Other Parts Discussed in Thread: UCC28180
Tool/software:
Dear TI Team ,
We are using ucc256601ddbr LLC controller with ucc28180 PFC controller for 1k.watt 64V -15.6A EV charger (48v battery).
design is in in HF burst up to 6A, and when we put load 7A the output voltage decreases.
for reference i am attached some waveform like without load and with load of 5A
i am attached schematic and tool also, please provide solution or suggestion asap
<------- without load , Ch4- green waveform is feedback, CH 2-blue waveform is ISNS , CH1 - yellow is low side gate, CH3 -pink is high side gate
<------ with trigger mode, Ch4- green waveform is feedback, CH 2-blue waveform is ISNS , CH1 - yellow is low side gate, CH3 -pink is high side gate
<------- with 5A load, Ch4- green waveform is feedback, CH 2-blue waveform is ISNS , CH1 - yellow is low side gate, CH3 -pink is high side gate
final UCC25660x_CALC_1.0 (2)( 64v15.6A)1000 watt_1805.xlsxPFC dsn.pdfLLC dsn.pdfPOWERSUPPLY dsn.pdf