d48s1238-2a Delta Electronics, Inc., d48s1238-2a Datasheet - Page 2

• Manufacturer Part Number: d48s1238-2a
• Description: Delphi Series D48s1238, 450w Quarter Brick Dc/dc Power Modules 48v In, 12v/38a Out
• Manufacturer: Delta Electronics, Inc.

DS_D48S1238-2_04142009
TECHNICAL SPECIFICATIONS
(T
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Operating Case Temperature (open frame)
Operating Case Temperature (with heatspreader)
Storage Temperature
Input/Output Isolation Voltage
INPUT CHARACTERISTICS
OUTPUT CHARACTERISTICS
DYNAMIC CHARACTERISTICS
PROTECTION
EFFICIENCY
ISOLATION CHARACTERISTICS
FEATURE CHARACTERISTICS
GENERAL SPECIFICATIONS
A
Operating Input Voltage
Input Under-Voltage Lockout
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current(I
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
Initial Set Point Accuracy
Output Voltage Regulation
Total Output Voltage Range
Output Voltage Ripple and Noise
Operating Output Current Range
Output DC Current-Limit Inception
Output Voltage Current Transient
Turn-On Transient
Short Circuit Protection
Over Current Protection (OCP)
Over Voltage Protection (OVP)
100% Load
Input to Output
Isolation Resistance
Isolation Capacitance
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Power Good Assertion Time
Power Good out of regulation
Weight
=25°C, airflow rate=300 LFM, V
Capacitive Loading
Overshoot at Turn-On/Turn-Off
MTBF
Turn-On Voltage Threshold
Turn-Off Voltage Threshold
Lockout Hysteresis Voltage
Over Load
Over Line
Negative Step Change in Output Current
Settling Time (within 1% Vout nominal)
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Rise Time
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
Positive Step Change in Output Current
2
t)
in
=48Vdc, nominal Vout unless otherwise noted;
Cout 2200µF x2 (max ESR 20 mΩ) with 10µF Tantalum &
Vin=48V, Vo=12V shall exist for at least 250ms ~ 1Sec
0.47µF Ceramic cap. 5Hz to 20MHz Bandwidth
NOTES and CONDITIONS
Withstand continuous short-circuit, latch mode
From 90% of Vo to Power Good fell to ground
From 90% of Vo (falling) to Power Good rise
P-P thru 12µH inductor, 5Hz to 20MHz
From On/Off falling edge to 10%Vo,set
48V, 2200µFx2pcs load cap, 0.1A/µs
From 90% of Vin to Vo = 10%Vo,set
over load, line and temperature
Io=80% of Io, max; Tc=40°C
Io=80% of Io, max; Tc=25°C
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
Vin=48V, Vo=12V, Io=38A
Output Voltage 10% Low
Please refer to Figure13
Please refer to Figure14
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Logic High, Von/off=15V
10% of Vo to 90% of Vo
Ion/off at Von/off=0.0V
With heatspreader
Vin=48V, Io=min-max
For D48S1238-2 A/E
Io=Io,min to Io,max
100% Load, 43Vin
Vin=51.4V, Io=20A
For D48S1238-2C
Vin=43V to 57V
Vin=48V
1 minute
120 Hz
12.19
1000
4400
Min.
3.75
TBD
12.9
11.4
11.4
11.4
11.4
11.4
105
105
-40
-40
-40
43
43
10
10
0
1
0
1
0
D48S1238 (Standard)
1000
Typ.
TBD
TBD
TBD
TBD
TBD
94.5
350
1.3
48
48
42
40
35
61
2
1
25000
25000
12.21
Max.
2250
2250
TBD
12.5
TBD
TBD
TBD
12.6
12.6
12.6
12.6
12.6
14.2
125
130
130
110
0.8
57
90
57
70
38
40
30
15
50
10
10
1
2
M hours
% of Io
mVp-p
grams
Units
Vdc
KHz
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Adc
Vdc
Vdc
Vdc
Vdc
MΩ
mA
mA
A
mA
mS
mS
mS
mA
mS
mS
°C
°C
°C
dB
uS
µF
µF
pF
uA
%
%
A
A
V
V
2
s
2