The phyCORE-MPC5200B tiny on the Development Board
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PHYTEC Messtechnik GmbH 2006 L-678e_0
61
The components at U12 and U13 guarantee electronic protection
against overvoltage and excessive current draw at pin 6 of P1A; in
particular:
•
Load detection and controlled voltage supply switch-on:
In order to ensure clear detection of the switch-on condition, the
connected device should cause a current draw of at least 10 mA
at pin 6. The controlled voltage supply switch-on prevents
voltage drop off on the phyCORE Development Board HD200.
•
Overvoltage Protection:
If the voltage at pin 6 exceeds the limiting value that can be
provided by the phyCORE Development Board HD200, the
voltage at pin 6 will be switched off immediately. This prevents
damage to the phyCORE Development Board HD200 as well as
connected modules and expansion boards.
•
Overload Protection:
If the current draw at pin 6 exceeds the limiting value of
approximately 150 mA, the voltage at pin 6 will be switched off
immediately. This prevents damage to the phyCORE
Development Board HD200 and its power adapter caused by
current overload.
This configuration option provides the following possibility:
Jumper Setting
Description
JP24
2 + 3
Electronically protected 5 V at pin 6 for supply of
external devices connected to P1A
Table 18:
JP24 Power Supply to External Devices Connected to P1A on the
Development Board
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Страница 104: ...Published by PHYTEC Messtechnik GmbH 2006 Order No L 678e_1 Printed in Germany...