PCB design#
3 pins diode has been used due to the fast recovery time
PCB board#
Connectors#
Power input/output: banana connectors
40pin GPIO connector for the FPGA: TSS-120-02-G-D
Extra strip for extra pin and FPGA debugging
Components list (BOM)#
values |
Description |
code |
manufacture |
|
|---|---|---|---|---|
RECTIFIER |
||||
D1-D4 |
×4 |
Schottky diode 60V and 15A |
VS-15TQ060-M3 |
Vishay |
Alternative 100V and 16A |
FES16BT-E3/45 |
Vishay |
||
×1 |
heat sink for the diodes and isolation with mica |
|||
x |
Heat sink (need holes on the pcb) |
CR101-75AE(VE) |
Ohmite |
|
Clip for TO-220 |
CLA-TO-21E |
|||
Cf |
10 μF |
CAP FILM 100VDC (63VAC) |
MMK22.5106K100D19L4TRAY |
Kemet |
Lf1 |
1uH (2.1μH) |
TOROID INDUCTOR 1uH LOW LOSS VERTCL MT |
2100LL-1R0-V-RC |
BOURNS |
Lf2 |
1uH (2μH) |
TOROID INDUCTOR 1uH LOW LOSS VERTCL MT |
2100LL-1R0-V-RC |
BOURNS |
Rf |
250 Ω |
through-hole resistance ¼W |
||
ADC |
||||
U1-U2 |
×2 |
8-bit ADC (PDIP) |
AD7822BNZ |
ANALOG DEVICES |
×4 |
1 kΩ |
SMD |
For ADC-FPGA connection |
|
×6 |
100nF |
SMD |
standard |
|
×2 |
10 uF |
polarized capacitor 25V |
||
SENSING |
||||
U3 |
×1 |
10A/6A current sensor |
~~HO 10-P~~ / HO 6-P |
LEM |
U4 |
×1 |
PDIP 3V ×8.2+0.5% |
ACPL-790B-000E |
Broadcom Limited |
U5 |
×1 |
operational amplifier (PDIP) |
MCP6271(2) |
Microchip |
alternatives |
operational amplifier (SOIC) |
OPA2350 |
TI |
|
4.5V |
TLC070 |
TI |
||
PDIP, still stocks but no more produced |
OPA350 |
TI |
||
U6 |
×1 |
5V voltage regulator (SOT) |
ZXTR2105FF-7 |
DIODES incorporated |
×13 |
through-hole resistance ¼W |
|||
×9 |
SMD resistor |
|||
×4 |
SMD capacitor |
|||
×8 |
Film capacitor standard |
|||
CONNECTORS |
||||
J1-J4 |
×4 |
Banana connectors |
||
J14-J13 |
×2 |
Terminal block |
Screw block with 9.53mm step |
|
TP |
×6 |
Test point 1.6mm |
For Vt, Vr and Vbat |
|
JP1 |
×1 |
current jumper 20mm |
||
J5 |
40pin connector to FPGA |
TSS-120-02-G-D |
SAMTEC |
|
J6 |
HDR 1×3 |
5V 3.3V selection |
||
J7 |
HDR 1×5 |
For H-bridge |
||
J8 |
HDR 2×6 |
Extra pin |
||
J9 |
HDR 1×2 |
External Vcc, battery side |
||
J10 |
HDR 1×3 |
Selection for 5V regulator |
||
J11-J12 |
×2 |
HDR 1×2 |
ADC input for oscilloscope |
|
TP |
×2 |
Test point 1mm |
ADC input |
Mounted components#
number in the () is the nominal one
Filter |
Current |
Voltage |
||||||
|---|---|---|---|---|---|---|---|---|
\(C_f\) |
22 μF |
sens |
LEM HO 10P/SP33 |
sens |
ACPL-790B-000E |
|||
M108137228 |
\(R_{OCD}\) |
18 kΩ |
\(R_{p1}\) |
47.3 (47) kΩ |
||||
\(L_{f1}\) |
2.2 μH |
\(R_{if1}\) |
3.89 (3.9) kΩ |
\(R_{p2}\) |
121 (120) Ω |
|||
\(L_{f2}\) |
2.2 μH |
\(R_{if2}\) |
10 (10) kΩ |
\(R_{vf}\) |
? (3.3) kΩ |
|||
WE 7443762504022 |
\(C_{if}\) |
3.35 (3.3) nF |
\(C_{vf}\) |
? (10) nF [film] |
||||
\(R_f\) |
0.33 Ω @5% |
\(R_{i1}\) |
SC 0 Ω |
\(R_{v1}\) |
10 (10) kΩ |
|||
\(R_{i2}\) |
OC \(\infty\) |
\(R_{v2}\) |
12.15 (12) kΩ |
|||||
\(C_v\) |
1.03 (1) nF |
Diodes MBR B20100
rail-to-rail OPAMP