v 20211219 2
C 0 0 1 0 0 title.sym
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date=$date$
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org=CuVoodoo
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authors=King Kévin
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title=USB-C Power Delivery blocker
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version=$version$
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revision=$revision$
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licence=CERN-OHL-S
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device=none
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footprint=none
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C 3500 1900 1 0 0 chassis.sym
C -3300 1900 1 0 0 chassis.sym
C -4400 1900 1 0 0 GND.sym
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C 2000 1900 1 0 0 GND.sym
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{
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C -5400 1000 1 90 0 C0603.sym
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C -5000 800 1 0 0 GND.sym
C -5800 800 1 0 0 GND.sym
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capacitors block PD communication
by smoothing out the 300 Kpbs signal,
but still permits Rx identification
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{
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device=LM393D
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lcsc=C2977085
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C 4800 6100 1 0 1 LM393D_part-2-2-COMP2.sym
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C 400 7800 1 270 1 40P05.sym
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C 600 8100 1 90 0 ZENER.sym
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value=16V
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description=diode, zener
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C 700 7800 1 270 0 resistor-1.sym
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value=100k
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description=resistor, chip, 0603 (metric 1608), 1%
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C -400 5900 1 0 0 GND.sym
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{
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netname=VBUS1
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N 400 8500 400 8800 4
C -1800 6200 1 270 1 ZENER.sym
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lcsc=C2832571
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C -1700 5900 1 0 0 GND.sym
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{
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netname=VREF1
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R3 ≤ (Vsupply_min - Vzener) / Ileakage 
R3 ≤ (4.75 - 4.7) / 2E-6 = 25k
C -1700 8400 1 270 0 resistor-1.sym
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T -6400 8100 9 10 1 0 0 0 1
Vgs ≤ ±20V
T -6400 7500 9 10 1 0 0 0 2
divider_ratio = Vref / Vover
divider_ratio = 4.7 / 5.5 = 0.8545
C -2100 8400 1 270 0 resistor-1.sym
{
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value=5k1
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C -2100 7000 1 270 0 resistor-1.sym
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footprint=UC1608X55N.lht
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description=resistor, chip, 0603 (metric 1608), 1%
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T -6400 7100 9 10 1 0 0 0 1
R2/(R1+R2) = 30/(5.1+30) = 0.8547
C -2100 5900 1 0 0 GND.sym
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{
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C 3000 7800 1 90 0 40P05.sym
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C 2800 8100 1 270 1 ZENER.sym
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value=16V
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T 2800 8100 5 10 0 1 0 0 1
lcsc=C2832584
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C 2700 7800 1 90 1 resistor-1.sym
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value=100k
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C 3800 5900 1 0 1 GND.sym
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C 5100 5900 1 0 1 GND.sym
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N 4800 6800 5000 6800 4
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C 5100 8400 1 90 1 resistor-1.sym
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C 5500 8400 1 90 1 resistor-1.sym
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C 5500 7000 1 90 1 resistor-1.sym
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value=30k
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C 5500 5900 1 0 1 GND.sym
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netname=VBUS
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T -6400 8500 9 10 1 0 0 0 2
Over-Voltage protection with comparator circuit
nased on Texas Instruments SNOAA20 design
C -1000 0 1 0 0 HEADER-2.54-1x10.sym
{
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device=HEADER-2.54-1x10
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value=DEBUG
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C -1200 2200 1 270 0 GND.sym
N -1000 1900 -1700 1900 4
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N -1000 1700 -1700 1700 4
{
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N -1000 1300 -1700 1300 4
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N -1000 700 -1700 700 4
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C 800 2300 1 0 0 XKB_U262-24XN-4BV60.sym
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refdes=J2
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device=XKB_U262-24XN-4BV60
T 3300 5000 5 10 1 1 0 0 1
value=USB-C receptacle
T 3600 4000 5 10 0 1 0 0 1
lcsc=C388659
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C -500 8500 1 270 0 SCHOTTKY.sym
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value=RB521S-30
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lcsc=C122862
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C 3900 8500 1 90 1 SCHOTTKY.sym
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N 200 7900 200 7600 4
N 200 7600 3200 7600 4
{
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N 3200 7900 3700 7900 4
C -5600 2300 1 0 0 XKB_U261-24XN-4BC2LS.sym
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refdes=J1
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device=XKB_U261-24XN-4BC2LS
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lcsc=C2880648
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value=USB-C plug
}