101-1017 Rabbit Semiconductor, 101-1017 Datasheet - Page 118
101-1017
Manufacturer Part Number
101-1017
Description
KIT DEV POWERCORE 3800 INT'L
Manufacturer
Rabbit Semiconductor
Series
PowerCore FLEXr
Type
MPU Moduler
Datasheet
1.101-1007.pdf
(240 pages)
Specifications of 101-1017
Contents
RabbitCore Module, Dev. Board, AC Adapter, Cable and Dynamic C® CD-Rom
Processor To Be Evaluated
PowerCore 38xx
Interface Type
Ethernet
For Use With/related Products
RCM3800
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Example Current Calculation
Let’s look at a 24 V AC power supply where the user’s circuit consumes 300 mA @ +3.45 V,
550 mA @ +5 V, and 1500 mA @ 24 V AC. Can a PowerCore 3810 supply these needs?
I
I
I
Now let’s examine each of these currents in turn.
• I
• I
•
110
3VoutA
5VoutA
unregA
needs 550 mA @ +5 V, this is
Since the user’s circuit only needs 1500 mA @ +24 V AC, this is
I
3VoutM
5VoutM
unregM
=
=
=
1850 mA
1850 mA
1613 mA
= 1500 mA = actual AC output current used by user’s circuit
= 300 mA
= 550 mA
= 350 mA; since the user’s circuit only needs 300 mA @ +3.45 V, this is
= [850 mA - I
–
–
(
(
I
550mA
5VoutA
+
+
I
300 mA
3VoutA
3VoutA
)
×
)
] = [850 mA - 300 mA] = 550 mA; since the user’s circuit
×
⎛
⎝
6.7 V
------------ -
⎛
⎝
V
6.7 V
------------ -
OK
24 V
IN
⎞
⎠
.
⎞
⎠
OK
.
PowerCore FLEX
OK
.
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