sch: first completed design

This commit is contained in:
King Kévin 2022-03-23 10:46:51 +01:00
parent 7efd21e30c
commit 9bfda73719
1 changed files with 636 additions and 2 deletions

View File

@ -1,4 +1,4 @@
v 20210626 2
v 20211219 2
C 0 0 1 0 0 title.sym
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@ -8,7 +8,7 @@ org=CuVoodoo
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authors=King Kévin
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title=TITLE
title=USB-C Power Delivery blocker
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version=$version$
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@ -20,3 +20,637 @@ device=none
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footprint=none
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C -3300 1900 1 0 0 chassis.sym
C -4400 1900 1 0 0 GND.sym
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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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R3 ≤ (Vsupply_min - Vzener) / Ileakage
R3 ≤ (4.75 - 4.7) / 2E-6 = 25k
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Vgs ≤ ±20V
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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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R2/(R1+R2) = 30/(5.1+30) = 0.8547
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Over-Voltage protection with comparator circuit
nased on Texas Instruments SNOAA20 design
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value=USB-C receptacle
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