PCB design#
General consideration, power limit, path width, …
Two resonant tanks will be built. One with low nominal quality factor and one with high nominal quality factor.
High Q#
Explain what was done in the lab, y compris les modifications. STILL NOT WORKING (voltage transformer is the bottle neck)
Make some consideration to improve the design (grid of capacitors)
Low Q#
Consideration and working components that are mounted
Generalities#
Power input/output: HDR 2x10 (half connector per polarity)
Sensing SMA connectors + HDR 1x2 (for oscilloscope: before the 50 Ohm resistance) GND of the SMA connector on the FPGA is connected to the common ADC ground. i.e. can create a common ground plate on the PCB.
Components list#
values |
Description |
code |
manufacture |
|
|---|---|---|---|---|
\(L_{r}\) |
68uH (10uH) |
Power DC inductor |
AGP4233-683ME (103ME) |
Coilcraft |
\(C_{r}\) |
100nF (700nF) |
1kVDC – C0G (NP0) - SMD |
CKC21C104KDGLC7805 |
Kemet |
\(T_{r}\) |
1:1 |
Lm=245uH |
B65982E0012D001 |
TDK |
\(T_{1}\) |
1:ni |
toroid 12.7 × 7.15 × 4.9 mm |
5977000301 core |
Fair-Rite |
\(T_{2}\) |
nv:1 |
toroid 12.7 × 7.15 × 4.9 mm |
5977000301 core |
Fair-Rite |
\(R_{p1}\) |
100 kΩ |
through-hole resistance ¼W |
Precision <1% |
|
\(R_{p2}\) |
1 kΩ |
through-hole resistance ¼W |
Precision <1% |
|
\(R_{i}\) |
0.5 Ω |
through-hole resistance ¼W |
Precision <1% |
|
\(R_{\text{rcf}}\) |
50 Ω |
through-hole resistance ¼W |
Precision <1% |
|
\(R_{\text{rvf}}\) |
50 Ω |
through-hole resistance ¼W |
Precision <1% |
|
\(C_{\text{rcf}}\) |
nF |
film capacitor |
||
\(C_{\text{rvf}}\) |
nF |
film capacitor |
||
CONNECTORS |
||||
J3-J6 |
×2 |
header 1×2 |
||
J1-J2 |
×2 |
Header 2×10 |
||
TP |
×6 |
Test point 1.6mm |
||
SMA |
×2 |
FPGA connectors |
SMA-TH-vertical |
|
J7 |
×1 |
current jumper (wire) |
RESONANT TANK
Units |
Description |
Code |
|---|---|---|
To buy? |
||
×10 |
Multilayer Ceramic Capacitors - SMD/SMT 1kV 0.1uF 1812 10% |
CKC21C104KDGLC7805 |
Already in the lab? |
||
×1 |
Power Inductors - Leaded 68uH Shld 20% 24A 2.95mOhms |
AGP4233-683ME (Carlos) |
×1 |
Power Inductors - Leaded 10uH Shld 20% 24A 2.95mOhms |
AGP4233-103ME (Carlos) |
×2 |
Handcraft transformer. Two magnetizing inductance: 245uH and 30uH |
B65982E0012D001 |
×4 |
Handcraft signal transformer |
core: 5977000301 |
×10 |
<1% resistor (¼W) |
|
×4 |
Film capacitor for filtering |
|
×12 |
Test point 1.6mm |
|
×12 |
Test point 1mm |
|
×4 |
Coaxial Connectors 6 GHz, 50 Ohm SMA Jack or Plug, Cable Connector |
SMA-J-P-H-ST-MT1 |
×4 |
Header 2×10 |
HDR2x10 |
×4 |
Oscilloscope probe test point |
129-0701-201(202) |
Note on the mounted components#
Both
wire jump for current probe: distance is good, diameter could be reduced. 1.5mm is the wire diameter. Cable code: 3.5mm (outer diam) MZ-3.2/100 RS: 803-4262 | style 1015
cable from the power transformer: diam x.x mm
hole for current transformer: diam 3mm
Note
LOW Q has been completely characterize. There is a yellow paper with all the data. HIGH Q is partially characterize
HIGH Q |
LOW Q |
|
|---|---|---|
\(L_r\) |
68 μH |
10 μH |
\(C_r\) |
100.3 nF |
850 nF |
\(L_m\) |
169 μH |
36 μH |
\(n\) |
1:1.268 |
1:0.919 |
\(R_{pv1}\) |
? |
4.67 kΩ |
\(R_{pv2}\) |
? |
982 Ω |
\(C_{rvf}\) |
? |
5.3 nF |
\(n_v\) |
??? |
62:3 |
\(R_i\) |
250 mΩ |
500 mΩ |
\(C_{rcf}\) |
? |
5.3 nF |
\(n_i\) |
0.5:14 |
1.5:27 |