Figure 2.13 Reciter Power Supply Block Diagram - Tait TB8100 Service Manual

Figure 2.13 Reciter power supply block diagram
+28V
PWD_EX
PWD_RX
PWD_ON
RF Board
Digital Board
+28V to RF Board
+28V
Polyswitch
+ Zener
Comparators
+28V
PWR_GOOD
PWD_ON
PWD_RX
*To prevent DSP latch-up
SIF = system interface board
60 Reciter Circuit Description
5.3V
+28V Dual SMPS
Filter
8.5V
Regulator
Fan
Switch
Control
Dual SMPS
Filter
Regulator
5.3V
Linear 5V
Regulator
SD
3.3V
Regulator
Charge
Pump
Power
Switches
8V
Regulator
Switch Filter
Digital 5.3V
5V
Filter
Regulator
3.3V Power
Switch
Power
Switch
Power
Switch
DSP Low
Regulator
2.5V
© Tait Electronics Limited September 2006
3.3V
23V
8VRX
8VEX
8V
8.5V to SIF
To Fan
Analogue 5.3V
System 5V
5V
Regulator
Analogue 5V
Analogue
3V
3V
Regulator
Digital 3.3V
Analogue 3.3V
Analogue 3.3V
3V
Lock-out
Circuit*
2.5V
3.3V to SIF
Protection
Circuit
5V to SIF
TB8100 Service Manual