Datasheet
DATASHEET
DS_DIM3R3_09102010
2
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=-48Vdc, nominal Vout unless otherwise noted;)
PARAMETER
NOTES and CONDITIONS
DIM3R3300 (Standard)
Min.
Typ.
Max.
Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
0
-48
-75
Vdc
Transient
10s
-100
Vdc
Operating Case Temperature
Please refer to Fig.13 for the measuring point, Tc
-40
117
°C
Storage Temperature
-55
125
°C
ISOLATION
Input to MGMT_PWR Output Voltage
1500
Vdc
Input to SHELF_GND Voltage
1500
Vdc
Input to LOGIC_GND Voltage
1500
Vdc
LOGIC_GND to SHELF_GND Insulation Resistance
100Vdc
10
M
GENERAL SPECIFICATIONS
Calculated MTBF
Pin=300W, Vin=-48V
1.955
Mhours
Over-Temperature Shutdown
Refer to Figure 13 for the measuring point, Tc
130
°C
Weight
27
grams
MAIN INPUT (DUAL FEED) CHARACTERISTICS
Operation Input Voltage Range
-36
-75
V
Input UVLO
Turn-On Voltage Threshold
VRTN_OUT open load
-33.2
-34.6
-36
Vdc
Turn-Off Voltage Threshold
VRTN_OUT open load
-30.2
-31.6
-33
Vdc
Input OVP
Vdc
Turn-On Voltage Threshold
VRTN_OUT open load
-78
-79.8
-81.5
Vdc
Turn-Off Voltage Threshold
VRTN_OUT open load
-80
-81.8
-83.5
Vdc
Off Converter Input Current
Vin < UVLO voltage
10
mA
Maximum Input Current
Pin=300W, Vin=0 to -75V
9.5
A
POWER & MAIN OUTPUT (-48V output)
Input Power, Maximum Allowable
300
W
Efficiency
Pin=300W, MGMT_PWR/BLUE_LED_PWR no load
97
98
%
Efficiency
Pin=300W, MGMT_PWR=8W, BLUE_LED_PWR =0.5W
96
97
%
Total Power Dissipation
Pin=300W, MGMT_PWR=8W, BLUE_LED_PWR=0.5W
10
W
Management Power, Maximum Deliverable
8
W
Module Standby Current
Pout=0W, MGMT_PWR=0W, BLUE_LED_PWR=0W
Vin=-36V,
80
mA
Vin=-48V,
45
mA
Vin=-75V
40
mA
Main Output External Output Filter Capacitance
200
330
F
HOT SWAP
Inrush Transient
Pin=300W, Vin=-75V, MGMT_PWR=0,
BLUE_LED_PWR=0W
0~0.9mS
42.5
A
0.9~3mS
17
A
3~100mS
8.5
A
INPUT A/B FEED LOSS / FUSE ALARM
Alarm ON Input Voltage Threshold
-36
-36.8
-37.9
%
Alarm Off Input Voltage Threshold
-37.3
-37.5
-37.7
%
Opto Transistor Collector to Emitter Voltage
40
Vdc
Opto Transistor Collector to Emitter Dark Current
Opto Diode current, Id = 0A
100
nA
Opto Transistor Collector Saturation Voltage
0.3
V
HOLD UP CAPACITANCE INTERFACE
Hold-up Capacitor Voltage Accuracy
-70
72
-74
V
Hold-up Capacitor Charge Current
24
mA
Minimum Hold-up Capacitance (C_HOLD)
47
F
72V_CAP ON Input Voltage Threshold
-36
-37
-38
V
72V_CAP OFF Input Voltage Threshold
-36.6
-37.6
-38.6
V