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LLRFSwPS is a switched power supply for active electronic components of the LLRF system.

General description

LLRFSwPS is a 6-channel power supply that provides ground (GND), PE (Protective Earth), +3.3V, +5V, and +24V DC voltages from two 15W AC-to-DC converters and one 108W AC-to-DC converter, respectively. It includes a Beagle Bone Black that works as a digitizer for the DC signal from the voltage and current consumption sensor, and EPICS IOC (Input/Output Controller) server to provide these measurements for high-level application through PVs (Process Variables). The simplified diagram with the main components and ports is shown in Fig. 1.

Figure 1: LLRF Switched Power Supply block diagram.

Versions Control

Table 1: RF-LLRFSwPS version control.
Version Date Description
V1I1 First assembly

The schematic, bill of materials, and all other files related to this crate can be found at:
\\centaurus\LNLS\Grupos\RF\Sirius DOC_TEC_RF\Sirius_DOC_TEC_RF\LLRF_Rack\Crates\LLRF_Switched_Power_Supply

Devices in use

Table 2: RF-LLRFSwPS devices.
Device # Version Device Name Location
001 V1I1 RA-RaBO01:RF-LLRFSwPS Booster LLRF Rack
002 V1I1 RA-RaSIA01:RF-LLRFSwPS Storage Ring A LLRF Rack

Crate Panels

Figure 2: LLRF Switched Power Supply front panel art.
Figure 3: LLRF Switched Power Supply rear panel art.

Device PVs

Table 3: RF-LLRFSwPS PVs.
PV Name Description
*:RF-LLRFSwPS:VoltPos5V-Mon +5V Voltage monitoring
*:RF-LLRFSwPS:CurrentPos5V-Mon +5V Current monitoring
*:RF-LLRFSwPS:VoltPos3V3-Mon +3.3V Voltage monitoring
*:RF-LLRFSwPS:CurrentPos3V3-Mon +3.3V Current monitoring
*:RF-LLRFSwPS:VoltPos24V-Mon +24V Voltage monitoring
*:RF-LLRFSwPS:CurrentPos24V-Mon +24V Current monitoring