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

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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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ref,value,function,mpn,manufacturer,package,source,vendor_pn,stock_checked_2026-10-16,note
U1,TPS54202DDCR,sync buck 4.5-28 V 2 A 500 kHz,TPS54202DDCR,Texas Instruments,SOT-23-6 (DDC),Mouser,595-TPS54202DDCR,0 (Mouser API: Unknown; re-check before order),thin stock; order early for builds beyond prototypes
L1,15uH,output inductor,AMPLH5030S-150MT,Abracon,5.6x5.2x2.8 mm (datasheet p3; 5.7x5.3x2.8 max),Mouser,815-AMPLH5030S-150T,1577,Isat 3.7 A / Irms 3.5 A (datasheet p2) >= 2.5 A HS limit min; DCR 98 typ / 118 max mOhm
C1,47uF 35V,input bulk (cable damping),EEE-FK1V470P,Panasonic,SMD alu 6.3x5.8 (D),Mouser,667-EEE-FK1V470P,97980,ESR damps cable L against ceramics
C2,10uF 25V X7R,input ceramic,CC1206KKX7R8BB106,Yageo,1206,Mouser,603-CC126KKX7R8BB106,"0 in stock, 300797 on order (Mouser API)",
C3,10uF 25V X7R,input ceramic,CC1206KKX7R8BB106,Yageo,1206,Mouser,603-CC126KKX7R8BB106,"0 in stock, 300797 on order (Mouser API)",
C4,100nF 50V X7R,VIN pin HF bypass,0603B104J500CT,Walsin,0603,Adom stock,,,closest to VIN/GND pins
C5,100nF 50V X7R,BOOT-SW,0603B104J500CT,Walsin,0603,Adom stock,,,
C6,22uF 10V X5R,output ceramic,CL21A226MPQNNNE,Samsung,0805,Adom stock,,,~55% effective at 5 V bias
C7,22uF 10V X5R,output ceramic,CL21A226MPQNNNE,Samsung,0805,Adom stock,,,
C8,22uF 10V X5R,output ceramic,CL21A226MPQNNNE,Samsung,0805,Adom stock,,,
C9,68pF C0G,feed-forward across Rtop,0402N680J500CT,Walsin,0402,Adom stock,,,chosen by ngspice loop sweep (fc ~29 kHz)
R1,68k,FB top (series part 1),CR0402-FX-6802GLF,Bourns,0402,Adom stock,,,Rtop = R1 + R2 = 73.6k
R2,5.6k,FB top (series part 2),CR0402-FX-5601GLF,Bourns,0402,Adom stock,,,
R3,10k,FB bottom,CR0402-FX-1002GLF,Bourns,0402,Adom stock,,,VOUT = 0.596 x (1 + 73.6/10) = 4.98 V
R4,1M,EN UVLO top,CR0402-FX-1004GLF,Bourns,0402,Adom stock,,,start 8.58 V / stop 6.87 V
R5,150k,EN UVLO bottom,CR0402-FX-1503GLF,Bourns,0402,Adom stock,,,
R6,2.2k,LED resistor,CR0402-FX-2201GLF,Bourns,0402,Adom stock,,,1.4 mA
R7,10k,VMON divider top (VOUT to VMON),CR0402-FX-1002GLF,Bourns,0402,Adom stock,,,VMON = VOUT/2 = 2.5 V for a 3.3 V ADC
R8,10k,VMON divider bottom (VMON to GND),CR0402-FX-1002GLF,Bourns,0402,Adom stock,,,VMON source impedance 5 k
D1,green LED,5 V power-good indicator,IN-S63BTG,Inolux,0603,Adom stock,,,
J1,MachineContactMedium,molecule contact (VIN),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board
J2,MachineContactMedium,molecule contact (GND),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board
J3,MachineContactMedium,molecule contact (EN),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board
J4,MachineContactMedium,molecule contact (VOUT),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board
J5,MachineContactMedium,molecule contact (GND),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board
J6,MachineContactMedium,molecule contact (VMON),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board
J7,MachineContactMedium,molecule contact (GND: the probing workcell's ground pin),MachineContactMedium,Adom,MachineContactMedium (1.3 mm pad / 0.78 mm drill),Adom stock,,,molecule contact pressed into the board; added 2026-10-07 so the probe's ground pin seats clear of the wired contacts
MP1,MachinePinMediumShort,molecule machine pin (GND),MachinePinMediumShort,Adom,MachinePinMediumShort (1.6 mm pad / 1.2 mm drill),Adom stock,,,corner pin; MP1 is the origin
MP2,MachinePinMediumShort,molecule machine pin (GND),MachinePinMediumShort,Adom,MachinePinMediumShort (1.6 mm pad / 1.2 mm drill),Adom stock,,,corner pin; MP1 is the origin
MP3,MachinePinMediumShort,molecule machine pin (GND),MachinePinMediumShort,Adom,MachinePinMediumShort (1.6 mm pad / 1.2 mm drill),Adom stock,,,corner pin; MP1 is the origin
MP4,MachinePinMediumShort,molecule machine pin (GND),MachinePinMediumShort,Adom,MachinePinMediumShort (1.6 mm pad / 1.2 mm drill),Adom stock,,,corner pin; MP1 is the origin
TP1,SW,test pad (SW),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP2,FB,test pad (FB),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP3,VOUT,test pad (VOUT),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP4,GND,test pad (GND),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP6,VIN,test pad (VIN),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP7,VIN,test pad (VIN),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP8,VOUT,test pad (VOUT),no part,,1.0 mm round copper pad,no part,,,"bare copper probe pad, not placed"
TP5,EN,"test pad (EN), added by the test plan",no part,,0.5 mm round copper pad (adom/testpoint-pad-0-5mm),no part,,,"bare copper probe pad, not placed"
TP9,VMON,"test pad (VMON), added by the test plan",no part,,0.5 mm round copper pad (adom/testpoint-pad-0-5mm),no part,,,"bare copper probe pad, not placed"