101-1006 Rabbit Semiconductor, 101-1006 Datasheet - Page 208

• Manufacturer Part Number: 101-1006
• Description: MODULE POWERCORE FLEX 3800
• Manufacturer: Rabbit Semiconductor

Specifications of 101-1006

• Module/board Type: MPU Core Module
• For Use With/related Products: RCM3800
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Option 3—Full-Wave Bridge
Option 3 requires unregulated AC or DC. This option places a full-wave bridge and filter
before the regulators. The full wave bridge is necessary to rectify AC voltage into DC
voltage. This option has a friction lock connector installed on the PowerCore to accept
external power.
The full-wave bridge causes a 1.4 V voltage drop before voltage is applied to the regula-
tors. This means that the 1.4 V drop needs to be taken into account.
The selection of the +5 V regulator determines the voltage range for the unregulated DC
input power as follows.
• 9–51 V DC for 2 A regulator option
• 10–41 V DC for 1 A regulator option
With this option, unregulated DC voltage is input to pin 2 of locking connector J3. The
negative side of the input voltage is applied to pin 6 of locking connector J3.
The unregulated DC connection allows a higher voltage to be applied with the 2 A regula-
tor option, but it does not provide for a common power-supply ground and circuit ground.
If the DC voltage does not exceed 43 V with a 2 A regulator, or 40 V with a 1 A regulator,
then the DC power-input ground can be connected to both J3 pins 3 and 4— this will pro-
vide for a common power-supply and circuit ground, and will also provide 43 V transorb
protection from transients.
AC voltage is applied to the same pins (between pins 2 and 6 of J3). Because the peak AC
voltages are 1.42 times higher than the rated AC voltages, the AC voltage applied will
have lower upper limits than those specified for the DC input. Also, because AC voltage
inputs go down to zero voltage during each cycle, a higher minimum voltage than the DC
voltage will be required. The selection of the +5 V regulator determines the voltage range
for the AC input power as follows.
• 12–36 V AC for 2 A regulator option
• 10–29 V AC for 1 A regulator option
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 =
Additional power is taken by the input diodes.
200
(5Vpower_to_user's_circuit) × 1.33.
(3.45Vpower_to_user's_circuit) × 1.92.
PowerCore FLEX