101-1017 Rabbit Semiconductor, 101-1017 Datasheet - Page 207
![no-image](/images/no-image-200.jpg)
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
- Current page: 207 of 240
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You can calculate the current that is available to your circuits that are external to the Power-
Core module.
The current required is calculated based on the power consumed by the PowerCore as
optionally configured. I = Power/Vin. The PowerCore will consume between 1 W and 2.7 W,
depending on the PowerCore options. Additional power may be needed to provide for
other user's circuitry external to the PowerCore. That additional power needed from the
input power supply is calculated as follows.
• For the user's 5 V circuitry, additional power from supply =
• For the user's 3.45 V circuitry, additional power from supply =
Thus, as an example, if the user's 5 V circuitry consumes 2.5 W and the user's 3.45 V cir-
cuitry consumes 0.5 W, then the total power needed from the power supply is (2.5 W ×
1.33 + 0.5 W × 1.92 + (PowerCore consumption as optionally configured)) = 5.3 W to 7.0 W.
If that external power supply is a 12 V supply, then it will need to source I = Power/Volt-
age current. Bear in mind that voltage presented to the regulators has a 0.7 V diode drop.
Thus the voltage in this formula must be reduced by 0.7 V, so current = Power/11.3 V
amps current. 5.3 W/11.3 V = 469 mA; 7.0 W/11.3 V = 619 mA.
This power-supply option does not have the AC zero-crossover detection circuit used for
triac support.
External AC Power Supplies
Three external AC power-supply options are available.
• Option 3—AC via locking connector at J3, full-wave bridge rectifier, onboard +5 V
• Option 4—AC via locking connector at J3, full-wave center-tapped rectifier, onboard
• Option 5—AC via locking connector at J3, half-wave rectifier, onboard +5 V switching
The operation and features of each these options are discussed below.
User’s Manual
(5Vpower_to_user's_circuit) × 1.33.
(3.45Vpower_to_user's_circuit) × 1.92.
switching regulator @ 1 A or 2 A, no zero-crossover detection or triac support, trans-
former with untapped secondary winding may be used
+5 V switching regulator @ 1 A or 2 A, includes zero-crossover detection for triac sup-
port, transformer with tapped secondary winding required
regulator @ 1 A or 2 A, includes zero-crossover detection for triac support, transformer
with untapped secondary winding may be used
199
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