Datasheet

DS_DIM3R3400_08142013 E-mail: [e-mail]
http://www.deltaww.com/dcdc
P4
DIM3R3 INTERNAL BLOCK DIAGRAM
PIN FUNCTIONS
PIN NO.
PIN NAME
DESCRIPTION
1
-48_A
-48V_A Feed (Externally Fused)
2
-48_B
-48V_B Feed (Externally Fused)
3
VRTN_A
VRTN_A Feed (Externally Fused)
4
VRTN_B
VRTN_B Feed (Externally Fused)
5
ENABLE_A
ENABLE_A Feed (Externally Fused) (Short Res, connected to VRTN_A on the back plane)
6
ENABLE_B
ENABLE_B Feed (Externally Fused) (Short Res, connected to VRTN_B on the back plane)
7
SHELF_GND
Shelf / Chassis / Safety Ground
8
5.0V
5.0V Isolated Power output (reference to LOGIC_GND)
9
3.3V
3.3V Isolated Output (reference to LOGIC_GND)
10
I2C_ADR
I2C Address Input (reference to LOGIC_GND)
11
I2C_DAT
I2C data (reference to LOGIC_GND)
12
I2C_CLK
I2C clock (reference to LOGIC_GND)
13
LOGIC_GND
Logic / Secondary / Isolated Ground
14
ALARM
Opto-isolated -48V A/B Feed Loss or Open Fuse Alarm (reference to LOGIC_GND)
15
-48V_OUT
OR’d and Inrush Protected –48V Output Bus ((Negative output to payload power converter))
16
HU_Trim
Hold Up cap voltage trim
17
VRTN_OUT
OR’d and Inrush Protected VRTN Output Bus (Positive output to payload power converter)
18
HU_CAP
Holdup/Bulk capacitor output voltage (Negative Connection to -48V_OUT)