HiRel/CanSat/Slave Power

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* the [[HiRel/CanSat/Slave_XBee|XBee module]]
 
* the [[HiRel/CanSat/Slave_XBee|XBee module]]
 
* the humidity sensor on the [[HiRel/CanSat/Slave_Sensors|sensors board]]
 
* the humidity sensor on the [[HiRel/CanSat/Slave_Sensors|sensors board]]
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= BOM =
 +
 +
{|class=wikitable
 +
|-
 +
! Device ||DigiKey Part No ||Description ||Quantity
 +
|-
 +
|10104111-0001LF ||609-4053-1-ND ||GDH04S04 SWITCH DIP HALF PITCH 4POS 24V ||1
 +
|-
 +
|1571983-5 ||450-1762-1-ND ||FTDI IC USB FS SERIAL UART 28-SSOP ||1
 +
|-
 +
|AP7361-FGE-7 ||AP7361-FGE-7DICT-ND ||DC-DC 5->3.3 ADJ ||1
 +
|-
 +
|GRM21BR60J106ME19L || ||CAP CER 10uF 6.3V 20% X5R 0805 ||1
 +
|-
 +
|08056D475KAT2A ||478-1416-1-ND ||CAP 4.7uF 10% X5R 0805 ||1
 +
|-
 +
|||||Resistance 0603 75k ||1
 +
|-
 +
|||||Resistance 0603 24k ||1
 +
|-
 +
|||||Resistance 0603 100 ||5
 +
|-
 +
|||||LED 0603 green 2V2 15mA ||5
 +
|}
  
 
[[Category:Master]] [[Category:HiRel]] [[Category:CanSat]]
 
[[Category:Master]] [[Category:HiRel]] [[Category:CanSat]]

Revision as of 10:41, 17 April 2016

Contents

This board powers the CanSat system either from a battery or from an USB connector.

CanSat Slave Power Schematic Description
CanSat Slave Power V1.0 CanSat Slave Power v2.0 Schematic PDF LDO 5V -> 3V3:
v1: SC189XSKTRT
v2: AP7361-FGE-7

It additionally provides a serial port over USB, 4 switches and 2 LEDs.

Power inputs

The CanSat system has 3 possible power sources:

  • a micro-USB connector on the power supply board
  • a battery connector on the power supply board
  • a micro-USB connector on the microprocessor board

Only one of these should power the system with 5 V. Jumpers are provided in order to select the actual power source. This 5 V is distributed to all the boards on the top connector disk.

Cansat-power.svg

The power board generates 3.3 V from 5 V. The 3.3 V is distributed to all the boards on the bottom connector disk.

Power usage

The 5 V is used by:

  • the power supply board for generating the 3.3 V
  • the sensors board for the Max11300 together with the temperature and pressure sensors

The precision of the 5 V is given by the components' requirements:

  • the DC/DC converter needs 2.9 V ÷ 5.5 V
  • the Max11300 mixed-mode I/O interface needs 4.75 V ÷ 5.25 V
  • the pressure sensor needs 4.75 V ÷ 5.25 V
  • the temperature sensor needs 2.5 V ÷ 5.5 V

The 3.3 V is used by:

BOM

Device DigiKey Part No Description Quantity
10104111-0001LF 609-4053-1-ND GDH04S04 SWITCH DIP HALF PITCH 4POS 24V 1
1571983-5 450-1762-1-ND FTDI IC USB FS SERIAL UART 28-SSOP 1
AP7361-FGE-7 AP7361-FGE-7DICT-ND DC-DC 5->3.3 ADJ 1
GRM21BR60J106ME19L CAP CER 10uF 6.3V 20% X5R 0805 1
08056D475KAT2A 478-1416-1-ND CAP 4.7uF 10% X5R 0805 1
Resistance 0603 75k 1
Resistance 0603 24k 1
Resistance 0603 100 5
LED 0603 green 2V2 15mA 5
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