User Manual

Table Of Contents
RF-Baton! Transmitter Controller Installation and Operation System Description
June 1999 6880497G01-B 2-15
DC-DC Converter Module
The DC-DC converter module accepts a +28 Vdc input, steps the voltage down to +12 Vdc
and +5 Vdc for the BCM and reference modules, and +10 Vdc for the fans. The DC-DC
converter also provides external +5 Vdc, +12 Vdc, and switched +28 Vdc outputs. If an
optional battery revert and charger is installed, the RF-B! transmitter controller remains fully
operational for 6 hours during power outages. Figure 2-8 shows a block diagram of the
DC-DC converter module.
Figure 2-8: DC-DC Converter Module Block Diagram
+5V/8A 40W
Converter
+28V/2A 56W
Charger
5V On LED
On/Off Switch
+12V/3.3A 40W
Converter
DC Input
22–30VDC
Class B EMI Filter
Inrush Limit
96 Pin Connector
DC Input from
AC Power Supply
302SRH-43
Optional
Battery
Switched 28V Control
Battery Revert Control
10V/0.6W