Quiero usar el TPA3251. El paquete es TSSOP 44 pines, 0.635 mm de paso. La biblioteca incorporada de KiCAD no lo tiene. (como indica el tema, estoy usando KiCAD 5).
Creé el símbolo de la biblioteca sin ningún problema. Bueno, tipo de no hay problema, tuve que cambiar la propiedad de todo lo que está debajo de /usr/share/kicad
para poder modificar el archivo /usr/share/kicad/library/Audio.lib
(sospecho que esta parte ya no está del todo bien).
Lo agregué como una entrada dentro de la biblioteca de Audio. Esto es lo que parece:
#
# TPA3255
#
DEF TPA3255 U 0 40 Y Y 1 F N
F0 "U" 0 500 50 H V C CNN
F1 "TPA3255" 0 50 50 H V C CNN
F2 "Package SSOP:SSOP-44_7.5x13.3mm_P0.635mm" 0 0 50 H I C CNN
F3 "" 0 0 50 H I C CNN
DRAW
S -450 450 450 -1850 0 1 0 f
X GVDD_AB 1 -550 350 100 R 50 50 1 1 W
X OSC_IOP 10 -550 -550 100 R 50 50 1 1 O
X DVDD 11 -550 -650 100 R 50 50 1 1 W
X GND 12 -550 -750 100 R 50 50 1 1 W
X GND 13 -550 -850 100 R 50 50 1 1 W
X AVDD 14 -550 -950 100 R 50 50 1 1 W
X C_START 15 -550 -1050 100 R 50 50 1 1 O
X INPUT_C 16 -550 -1150 100 R 50 50 1 1 I
X INPUT_D 17 -550 -1250 100 R 50 50 1 1 I
X ~RESET 18 -550 -1350 100 R 50 50 1 1 I
X ~FAULT 19 -550 -1450 100 R 50 50 1 1 O
X VDD 2 -550 250 100 R 50 50 1 1 W
X VBG 20 -550 -1550 100 R 50 50 1 1 w
X ~CLIP_OTW 21 -550 -1650 100 R 50 50 1 1 O
X GVDD_CD 22 -550 -1750 100 R 50 50 1 1 W
X BST_D 23 550 -1750 100 L 50 50 1 1 W
X BST_C 24 550 -1650 100 L 50 50 1 1 W
X GND 25 550 -1550 100 L 50 50 1 1 W
X GND 26 550 -1450 100 L 50 50 1 1 W
X OUT_D 27 550 -1350 100 L 50 50 1 1 O
X OUT_D 28 550 -1250 100 L 50 50 1 1 O
X PVDD_CD 29 550 -1150 100 L 50 50 1 1 W
X M1 3 -550 150 100 R 50 50 1 1 I
X PVDD_CD 30 550 -1050 100 L 50 50 1 1 W
X PVDD_CD 31 550 -950 100 L 50 50 1 1 W
X OUT_C 32 550 -850 100 L 50 50 1 1 O
X GND 33 550 -750 100 L 50 50 1 1 W
X GND 34 550 -650 100 L 50 50 1 1 W
X OUT_B 35 550 -550 100 L 50 50 1 1 O
X PVDD_AB 36 550 -450 100 L 50 50 1 1 W
X PVDD_AB 37 550 -350 100 L 50 50 1 1 W
X PVDD_AB 38 550 -250 100 L 50 50 1 1 W
X OUT_A 39 550 -150 100 L 50 50 1 1 O
X M2 4 -550 50 100 R 50 50 1 1 I
X OUT_A 40 550 -50 100 L 50 50 1 1 O
X GND 41 550 50 100 L 50 50 1 1 W
X GND 42 550 150 100 L 50 50 1 1 W
X BST_B 43 550 250 100 L 50 50 1 1 W
X BST_A 44 550 350 100 L 50 50 1 1 W
X INPUT_A 5 -550 -50 100 R 50 50 1 1 I
X INPUT_B 6 -550 -150 100 R 50 50 1 1 I
X OC_ADJ 7 -550 -250 100 R 50 50 1 1 B
X FREQ_ADJ 8 -550 -350 100 R 50 50 1 1 O
X OSC_IOM 9 -550 -450 100 R 50 50 1 1 B
ENDDRAW
ENDDEF
Puedo usar el símbolo. Sin embargo, la huella no funcionará. Probé varias maneras; al final, esto es lo que obtuve con el editor de huella, usando el asistente de huella. El siguiente es el contenido del archivo /usr/share/kicad/modules/Package_SO.pretty/SSOP-44_7.5x13.3mm_P0.635mm.kicad_mod
:
(module SSOP-44 (layer F.Cu) (tedit 5B815739)
(attr smd)
(fp_text reference REF** (at 8.89 -12.1775) (layer F.SilkS)
(effects (font (size 1 1) (thickness 0.15)))
)
(fp_text value SSOP-44 (at 8.89 -3.81 -90) (layer F.Fab)
(effects (font (size 1 1) (thickness 0.15)))
)
(fp_line (start 6.39 -11.31) (end 11.39 -11.31) (layer F.CrtYd) (width 0.05))
(fp_line (start 6.39 3.69) (end 6.39 -11.31) (layer F.CrtYd) (width 0.05))
(fp_line (start 11.39 3.69) (end 6.39 3.69) (layer F.CrtYd) (width 0.05))
(fp_line (start 11.39 -11.31) (end 11.39 3.69) (layer F.CrtYd) (width 0.05))
(fp_line (start 6.54 3.5575) (end 6.54 -10.3775) (layer F.SilkS) (width 0.15))
(fp_line (start 11.24 3.5575) (end 6.54 3.5575) (layer F.SilkS) (width 0.15))
(fp_line (start 11.24 -11.1775) (end 11.24 3.5575) (layer F.SilkS) (width 0.15))
(fp_line (start 7.34 -11.1775) (end 11.24 -11.1775) (layer F.SilkS) (width 0.15))
(fp_line (start 6.54 -10.3775) (end 7.34 -11.1775) (layer F.SilkS) (width 0.15))
(pad 22 smd roundrect (at 5.14 2.8575 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 23 smd roundrect (at 12.64 2.8575 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 21 smd roundrect (at 5.14 2.2225 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 24 smd roundrect (at 12.64 2.2225 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 20 smd roundrect (at 5.14 1.5875 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 25 smd roundrect (at 12.64 1.5875 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 19 smd roundrect (at 5.14 0.9525 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 26 smd roundrect (at 12.64 0.9525 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 18 smd roundrect (at 5.14 0.3175 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 27 smd roundrect (at 12.64 0.3175 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 17 smd roundrect (at 5.14 -0.3175 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 28 smd roundrect (at 12.64 -0.3175 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 16 smd roundrect (at 5.14 -0.9525 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 29 smd roundrect (at 12.64 -0.9525 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 15 smd roundrect (at 5.14 -1.5875 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 30 smd roundrect (at 12.64 -1.5875 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 14 smd roundrect (at 5.14 -2.2225 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 31 smd roundrect (at 12.64 -2.2225 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 13 smd roundrect (at 5.14 -2.8575 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 32 smd roundrect (at 12.64 -2.8575 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 12 smd roundrect (at 5.14 -3.4925 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 33 smd roundrect (at 12.64 -3.4925 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 11 smd roundrect (at 5.14 -4.1275 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 34 smd roundrect (at 12.64 -4.1275 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 10 smd roundrect (at 5.14 -4.7625 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 35 smd roundrect (at 12.64 -4.7625 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 9 smd roundrect (at 5.14 -5.3975 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 36 smd roundrect (at 12.64 -5.3975 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 8 smd roundrect (at 5.14 -6.0325 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 37 smd roundrect (at 12.64 -6.0325 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 7 smd roundrect (at 5.14 -6.6675 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 38 smd roundrect (at 12.64 -6.6675 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 6 smd roundrect (at 5.14 -7.3025 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 39 smd roundrect (at 12.64 -7.3025 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 5 smd roundrect (at 5.14 -7.9375 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 40 smd roundrect (at 12.64 -7.9375 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 4 smd roundrect (at 5.14 -8.5725 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 41 smd roundrect (at 12.64 -8.5725 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 3 smd roundrect (at 5.14 -9.2075 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 42 smd roundrect (at 12.64 -9.2075 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 2 smd roundrect (at 5.14 -9.8425 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 43 smd roundrect (at 12.64 -9.8425 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 1 smd roundrect (at 5.14 -10.4775 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
(pad 44 smd roundrect (at 12.64 -10.4775 270) (size 0.4 1.8) (layers F.Cu F.Paste F.Mask) (roundrect_rratio 0.25))
)
El problema es que la huella no se mostrará al asignar huellas; inicialmente muestra el paquete indicado en el archivo de la biblioteca, pero no aparece nada en el editor de PCB. Intento eliminar las asociaciones de huella para asignar manualmente; el paso de 0,635 mm SSOP-44 no se mostrará en la lista. Intento filtrar escribiendo SSOP, escribiendo 44, escribiendo 0.635. Nada. ¿Qué estoy haciendo mal?