12 V to 5 V / 1 A Buck Molecule (TPS54202), built in Altium Designer - design/tests.json

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Colby Knox Altium Designer build of the TPS54202 buck molecule: Altium project, manufacturing set, STEP and GLB, design, simulatio… 845dd0d 4d ago

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[
 {"id":"vin","what":"12 V arriving on the board, at the input caps","net":"VIN","why":"input path, ripple on C2/C3 (40 mV calc)","kind":"ripple","expect":"11.4 to 12.6 V DC, under 60 mV p-p at 1 A"},
 {"id":"sw","what":"switch node: frequency, edges, ringing","net":"SW","why":"500 kHz fixed, 390-630 kHz range","kind":"waveform","expect":"0 to 12 V square, 500 kHz, duty about 42 pct"},
 {"id":"vout","what":"5 V out and its ripple at 1 A","net":"VOUT","why":"regulation 4.86-5.11 V over Vref tolerance; 3.2 mV calc ripple","kind":"ripple","expect":"4.86 to 5.11 V, under 20 mV p-p"},
 {"id":"fb","what":"feedback node","net":"FB","why":"loop regulates FB to 0.596 V","kind":"dc","expect":"0.581 to 0.611 V"},
 {"id":"en","what":"enable / UVLO divider","net":"EN","why":"start 8.58 V, stop 6.87 V; 1.69 V at 12 V in","kind":"dc","expect":"1.6 to 1.8 V at 12 V in"},
 {"id":"vmon","what":"VOUT/2 monitor","net":"VMON","why":"ADC monitor divider R7/R8","kind":"dc","expect":"2.43 to 2.56 V"},
 {"id":"led","what":"power LED lit","net":"LED","why":"camera check of VOUT present","kind":"camera","expect":"on"},
 {"id":"gnd","what":"ground tether","net":"GND","why":"probe reference","kind":"ground","expect":"J2 / J5 machine contact"}
]