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Prepared
Manfred Ortmann
Approved
2.2.1 Power Supply
Connect the 467 / GDC board with a power supply between 6 and 25 V DC and approximate 10
Watt at connector X100.
Be aware to use the correct polarity as shown in picture 2-4.
Pic. 2-4: Polarity of the 467 / GDC board power supply connector
A protection against wrong polarity ( D109 ) and overcurrent ( F100 ) is implemented but a too
high current can damage the power supply or can produce great heat !
Do not plug the GDC module when the power supply is on !
The required voltages + 3.3 V and + 5.0 V will be regulated from the dual switching power
regulator LT1940EFE-PBF from Linear Technologies ( U100 ) on the board.
2.2.2 Reset
The triple processor supervisor TPS3307-33DGN from Texas Instruments ( U102 ) generates
a power-on reset and monitors the + 3.3 and + 5.0 V power supply.
Also if the reset button SW100 will be pressed the supervisor circuit generates a reset.
Preliminary
Document Number
Checked
Date
2008-05-14
Revision
Storage
PA 3.5
Mycable01
10(36)
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