晒WEBENCH设计的过程+LM5122 Asynchronous BOOST

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晒WEBENCH设计的过程+LM5122 Asynchronous BOOST [复制链接]

Required:

Inputvoltage: 10 – 15V;

OutPutvoltage:35 ;

MaxOutputCurrent: 5Amp;

Ripple: ±5%;

Ambient Temp: 85℃

Step1:
Step2:

Step3:

Step4:Power Efficiency Compare

Webench Result

Actual Result

Step 5: the actual PCB Drawing
Step 6: Loop Analyzer

     The LM5122 is a multiphase capable synchronous boost controller intendedfor high-efficiency

synchronous boost regulatorapplications. The control method is based upon peak current mode control. Currentmode control provides inherent line feedforward, cycle-by-cycle currentlimiting and ease of loop compensation.

For Cost Pressure，we hereimplemented asynchronous boost topology power supply, where the rectifierMOSFET was replaced by a Schottky Diode. That means the power efficiency wentworse than the synchronous boost topology.