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Technical data • Entire device
Panel PC 800 User's Manual V 1.00
2.3 Power management
2.3.1 Block diagram - supply voltage
The following block diagram shows the simplified structure of the PPC800 supply voltage.
Description
The supply voltage is converted to 15 V with a DC/DC converter. These electrically isolated 15
V feed further DC/DC converters, which generate the remaining voltages.
After the system is turned on (e.g. using the power button), the voltages 3V3 and 5 V are placed
on the bus. At the 5 V output, another DC/DC converter generates -12 V, and places these on
the bus. An additional DC/DC converter gen12 V.
The optional Add-on UPS (with battery unit) is supplied with 15 V and provides an uninterrupted
power supply from the 15 V bus during power failures.
Figure 5: Block diagram - supply voltage
24V
15V
Supply voltage
+24 VDC
Buffering capacitors
(for min. 10 ms)
electrically
isolated
3V3 Standby
3V3
3V3
5V
15V
+12V
+12V
5V
5V
15V
Power On
15V
-12V
-12V
5V Standby
UPS battery
Add-on UPS
module (optional)
+12V
PCI bus
Содержание MAPPC800-ENG
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