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BACKPLANE FOR UNIVERSAL MEASUREMENT SYSTEM
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Description
This backplane is a part of the Universal Measurement System FCALLBOX.
It can receive 5 module boards , the first one is reserved for the PIC24 CPU module described here
Features :
Power in 12V
DC/DC 5V 3A for module boards and on connector for external use.
DC/DC -5V 250mA max on connector for external use (option -12V if MAX765 is used).
USB connector.
SPI connector for Display TFT.
SPI Extension connector to chain several backplanes
Extension connector.
Summary
Schematic
Download here the schematic on PDF format
BOM
Top view
| Ref |
Description |
Manufacturer / Reference |
| R1,R2 |
Resistor 47K 5% 0603 |
All brands |
| R3 |
Resistor 22R 5% 0603 |
All brands |
| R8 |
Resistor 40.2K 1% 0603 |
All brands |
| R5 |
Resistor 20K 5% 0603 |
All brands |
| R6 |
Resistor 7K5 5% 0603 |
All brands |
| R4 |
Resistor 75K 5% 0603 |
All brands |
| C3,C5,C7,C8,C9 |
Capacitor 100nF 50V X7R 0603 |
All brands |
| C1,C10,C11 |
Capacitor 22uF 10V X5R 0603 |
All brands |
| C2 |
Capacitor 10uF 16V X5R 0603 |
All brands |
| C4 |
Capacitor 22uF 25V 1206 or 1210 |
All brands |
| C6, C12 |
Capacitor 220uF 25V radial |
Panasonic EEUFM1E221 or equivalent |
| L1 |
inductor 4.7uH 6A 7x7 |
BOURNS SRP6540-4R7M or equivalent |
| L2 |
inductor 47uH 0.8A 7x7 |
SUMIDA CDRH6D28NP-470NC or equivalent |
| L3 |
inductor 22uH 140mA 1210 |
EPCOS B82422A1223K10 or equivalent |
| D1 |
Diode Schottky 1A 20V SOD123 |
All brands |
| U1 |
IC MP2315 SOT23-8 |
MPS (Monolithic Power System) / MP2315GJ |
| U2 |
IC MAX764 DCDC negative |
MAX764ESA+T Maxim |
| J2,J6,J9 |
Connector 2 points pitch 5.08mm |
WEIDMULLER 1760490000 or equivalent |
| J3,J4,J5,J7,J8 |
Connector female 2x19 pitch 2.54mm |
All brands |
| J1 |
Connector USB type B through hole |
All brands |
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PCB
Below the picture of the PCB F00112
Download here the manufacturing files
Assembly
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Top view
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Picture
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Download here the top view in PDF format
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