Datasheet

DS_Q48SQ12033_09272013
2
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted;
PARAMETER
NOTES and CONDITIONS
Q48SQ12033 (Standard)
Min.
Typ.
Max.
Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
80
Vdc
Transient
100ms
100
Vdc
Operating Ambient Temperature
-40
85
°C
Storage Temperature
-55
125
°C
Input/Output Isolation Voltage
1500
Vdc
INPUT CHARACTERISTICS
Operating Input Voltage
36
48
75
Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold
33
34
35
Vdc
Turn-Off Voltage Threshold
31
32
33
Vdc
Lockout Hysteresis Voltage
2
Vdc
Maximum Input Current
13
A
No-Load Input Current
Vin=48V, Io=0A
100
mA
Off Converter Input Current
Vin=48V, Io=0A
9
13
mA
Inrush Current (I
2
t)
1
A
2
s
Input Reflected-Ripple Current
P-P thru 12µH inductor, 5Hz to 20MHz
20
mA
Input Voltage Ripple Rejection
120 Hz
-30
dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Vin=48V, Io=0, Tc=25°C
11.88
12.00
12.12
Vdc
Output Voltage Regulation
Over Load
Vin=48V, Io=Io,min to Io,max
±10
±30
mV
Over Line
Vin=36V to 75V, Io=Io min
±10
±30
mV
Over Temperature
Vin=48V, Tc=-40°C to 85°C
±60
mV
Total Output Voltage Range
over sample load, line and temperature
11.64
12.36
Vdc
Output Voltage Ripple and Noise
5Hz to 20MHz bandwidth
Peak-to-Peak
Full Load, 1µF ceramic, 10µF tantalum
110
160
mV
RMS
Full Load, 1µF ceramic, 10µF tantalum
25
50
mV
Operating Output Current Range
0
33
A
Output DC Current-Limit Inception
Output Voltage 10% Low
40
43
46
A
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
48V, 100uF Al Ecap,10µF Tan & 1µF Ceramic load
cap, 0.1A/µs
Positive Step Change in Output Current
50% Io.max to 75% Io.max
250
500
mV
Negative Step Change in Output Current
75% Io.max to 50% Io.max
250
500
mV
Settling Time (within 1% Vout nominal)
300
us
Turn-On Transient
Start-Up Time, From On/Off Control
Start-up time by On/off, from On/off to 90%Vo.set
100
140
ms
Start-Up Time, From Input
Start-up time by Vin, from Input to 90%Vo.set
100
140
ms
Output voltage rise time
Time for Vo to rise from 10% to 90% of Vo,set
60
75
ms
Maximum Output Capacitance
Low ESR CAP (OSCON), 100% load;
0
5500
µF
EFFICIENCY
100% Load
Vin=48V
95.0
95.5
%
60% Load
Vin=48V
95.3
95.8
%
ISOLATION CHARACTERISTICS
Input to Output
1500
Vdc
Isolation Resistance
10
MΩ
Isolation Capacitance
6800
pF
FEATURE CHARACTERISTICS
Switching Frequency
130
kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Von/off at Ion/off=1.0mA
0
0.8
V
Logic High (Module Off)
Von/off at Ion/off=0.0 µA
2
50
V
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Von/off at Ion/off=1.0mA
0
0.8
V
Logic High (Module On)
Von/off at Ion/off=0.0 µA
2
50
V
ON/OFF Current (for both remote on/off logic)
Ion/off at Von/off=0.0V
1
mA
Leakage Current (for both remote on/off logic)
Logic High, Von/off=15V
50
uA
Output Over-Voltage Protection
Over full temp range; % of nominal Vout
115
125
140
%
Output voltage trim range
Pout≤Max rated power
-20
10
%
GENERAL SPECIFICATIONS
MTBF(with heat spreader)
Io=80% of Io, max; Tc=25°C;Airflow=300LFM
2
M hours
Weight(without heat spreader)
50.0
grams
Weight(with heat spreader)
65.5
grams
Over-Temperature Shutdown (without heat spreader)
Refer to Figure 21 for Hot spot location
(48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-)
135
°C
Over-Temperature Shutdown (with heat spreader)
Refer to Figure 23 for Hot spot location
(48Vin,80% Io, 200LFM,Airflow from Vin+ to Vin-)
125
°C
Over-Temperature Shutdown (NTC Resistor)
Refer to Figure 21 NTC resistor location
125
°C
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spot’s temperature is just for reference.