SPECIFICATION
(TA=25°C, airflow rate=300 LFM, Vin=54Vdc, nominal Vout unless otherwise noted.)
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Transient
Operating Ambient Temperature
Storage Temperature
Input/output Isolation Voltage
INPUT CHARACTERISTICS
Operating Input Voltage
Input Under-Voltage Lockout
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Input Over-Voltage Protection
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Internal Input Filter
Internal Input Ripple Current
NOTES and CONDITIONS
10mS
Full Load, 40Vin
Vin=54V, Io=0A
Vin=54V
L + C Structure
Min.
Typ.
Max.
0 60
63
-20 85
-55 125
707
40 54
60
39 39.5
37 38
1 1.5
62
15.6
115
15
0.04+20
100
40
39
16
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Vin=54V, Io=Open Load, Tc=25°C
12.16
Vin=54V, Io=Full Load, Tc=25°C
11.76
Output Regulation
Load Regulation
Line Regulation
Temperature Regulation
Total Output Voltage Range
Vin=54V, Io=Io min to Io max
Vin=40V to 60V, Io=0
Ta=-20°C to 85°C
Over sample load, line and temperature
-1
11.6
Output Voltage Ripple and Noise
5Hz to 20MHz bandwidth
Peak-to-Peak
Full Load, Co=660uF, 1µF ceramic, 10µF tantalum
RMS
Full Load, Co=660uF, 1µF ceramic, 10µF tantalum
Operating Output Current Range
0
Output Over Current Protection(hiccup mode)
Output Over Voltage Protection(hiccup mode)
when Vo<10%Vo.nom
110
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
660µF Tan & 1µF Ceramic load cap, 1A/µs
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time (within 1% nominal Vout)
Turn-On Delay Time
75% Io.max to 50% Io.max
50% Io.max to 75% Io.max
Start-Up Delay Time From Input Voltage
Start-Up Delay Time From On/Off Control
Output Voltage Rise Time
Output Capacitance Range
On/Off=On, from Vin=Turn-on threshold to Vo=10%Vo,nom
Vin=Vin,nom, from On/Off=On to Vo=10% Vo,nom
Vo=10% to 90% Vo,nom
50% ceramic, 50% Oscon or AL
5
0
5
0
EFFICIENCY
Peak Efficiency
65% Load @Vin=54Vdc
Full Load Efficiency
100% Load @Vin=54Vdc
ISOLATION CHARACTERISTICS
Input to Output
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
Vin=40~60V
290
On/Off Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Current
Von/off
Von/off
Ion/off at Von/off=0.0V
2.4
Leakage Current
Logic High, Von/off=15V
10
GENERAL SPECIFICATIONS
MTBF
Io=80% of Io, max; Ta=25°C
2
Weight
With Base-plate
Weight
With heat-spreader and heat-sink
Over-Temperature Shutdown (With Base-plate)
Over-Temperature Shutdown
Refer to Figure 16 for Hot spot 1 location
(54Vin, 80% Io, 200LFM,Airflow from Vin+ to Vin- )
Refer to Figure 18 for Hot spot 2 location
(With 0.5” Height Longitudinal Heat Sink QLL050A)
Over-Temperature Shutdown (NTC Resistor)
(54Vin,80% Io, 200LFM,Airflow from Vout to Vin)
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
12.20
11. 80
400
0
85
25
120
13.5
125
125
200
97.8
97.5
80
80g
103g
127
125
130
12.24
11.84
0.4
1
12.4
120
50
51
130
30
10
15
4500
707
1000
0.8
20
0.2
500
Units
Vdc
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
µH+µF
mArms
Vdc
Vdc
mV
%Vo,set
%Vo,set
V
mV
mV
A
%Io,max
V
mV
mV
µs
mS
mS
mS
µF
%
%
Vdc
nF
KHz
V
V
mA
uA
Mhours
grams
grams
°C
°C
°C
Datasheet
DS_Q54SH12050_11082019
E-mail: dcdc@deltaww.com
http://www.deltaww.com/dcdc
P2