FEATURES
High efficiency: 96.5% @ 9.6V/25A
Size: 58.4mm x 22.8mm x 11.3mm
(2.28” x 0.90” x 0.44”)
Industry standard pinout
Fully protected: Input UVLO, OVP, Output
OCP and OTP
240W constant power output
Parallelable for higher output power
2250V isolation
Basic insulation
Monotonic startup
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950 (US & Canada) Recognized,
and TUV (EN60950) Certified
CE mark meets 73/23/EEC and 93/68/EEC
directives
Delphi Series E48SB, 240W Eighth Brick Bus Converter
DC/DC Power Modules: 48Vin, 9.6V/25A out
OPTIONS
Delta Electronics, Inc., a world leader in power systems technology and
manufacturing, has introduced the E48SB, eighth brick sized 240W
bus converter, into their Delphi Series of board mounted DC/DC power
converters to support the intermediate bus architecture to power multiple
downstream non-isolated point-of-load (POL) converters. The E48SB
product family features an input voltage of 38V to 55V, and provides up to
240W (9.6V and above) of power in an industry standard eighth brick
footprint. Typical efficiency of 9.6V module is 96.5%. With optimized
component placement, creative design topology, and numerous patented
technologies, the E48SB bus converters deliver outstanding electrical and
thermal performance. An optional heatsink is available for harsh thermal
requirements.
Positive On/Off logic
Short pin lengths
Heatsink available for extended
operation
OTP and OCP mode (Auto re-restart or
latch)
APPLICATIONS
Datacom / Netowrking
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Testing Equipment
DATASHEET
DS_E48SB9R625_01232007
TECHNICAL SPECIFICATIONS
(T
A
=25°C, airflow rate=300 LFM, V
in
=48Vdc, nominal Vout unless otherwise noted.)
PARAMETER
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
Operating 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 Lockout
Turn-Off Voltage Threshold
Turn-On Voltage Threshold
Lockout Hysteresis Voltage
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current (I
2
t)
Input Reflected-Ripple Current
OUTPUT CHARACTERISTICS
Output Voltage Set Point
Output Voltage Regulation
Over Load
Over Line
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Power Range
Output DC Powert-Limit Inception
Current share accuracy (2 units in parallel)
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
Negative Step Change in Output Current
Settling Time (within 1% Vout nominal)
Turn-On Transient
Start-Up Time, From On/Off Control
Start-Up Time, From Input
Maximum Output Capacitance
EFFICIENCY
100% Load
60% Load
ISOLATION CHARACTERISTICS
Input to Output
Isolation Resistance
Isolation Capacitance
FEATURE CHARACTERISTICS
Switching Frequency
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
Logic High (Module Off)
ON/OFF Control, Positive Remote On/Off logic
Logic Low (Module Off)
Logic High (Module On)
ON/OFF Current (for both remote on/off logic)
Leakage Current (for both remote on/off logic)
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown
NOTES and CONDITIONS
E48SB9R625 (Standard)
Min.
Typ.
Max.
60
117
125
2250
48
36.5
34.5
2
60
58.5
1.5
80
7
55
38
36
3
62
60
2.5
6.65
120
15
0.03
25
Units
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A
2
s
mA
Vdc
400
3.6
200
11
150
40
240
140%
mV
V
mV
V
mV
mV
W
W
%
mV
mV
us
ms
ms
µF
%
%
2250
10
1000
130
Vdc
MΩ
pF
kHz
0.8
18
0.8
18
0.3
30
V
V
V
V
mA
uA
M hours
grams
°C
Refer to Figure 17 for the measuring point, Tc
-40
-55
38
35
33
1
58
57
1
38V Vin , 100% Load
P-P thru 12µH inductor, 5Hz to 20MHz
Vin=48V, Io=no load, Ta=25°C
Io=Io,min to Io,max
Vin=38V to 55V
Tc=-40°C to 100°C
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
Full input voltage range
Full input voltage range
% of rated output current
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
8
15
Vin=48V
Vin=48V
15
9.5
300
3.4
7.0
100
25
0
110%
10
80
80
90
15
20
96.5
96.0
150
150
120
25
30
3000
Von/off
Von/off
Von/off
Von/off
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
Io=80% of Io, max; Ta=25°C
Refer to Figure 17 for the measuring point, Tc
-0.7
2
-0.7
2
0.25
1.86
31.76
122
DS_E48SB9R625_01232007
2
ELECTRICAL CHARACTERISTICS CURVES
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
Figure 2:
Power loss vs. load current for minimum, nominal,
and maximum input voltage at 25°C.
12
11
10
9
Output Voltage(V)
8
7
6
5
4
3
2
1
0
0
3
6
9
12
15 18 21 24 27 30
Output Current(A)
33
36
39
42
45
38Vin
48Vin
55Vin
Figure 3:
Output voltage regulation vs load current showing
typical current limit curves and converter shutdown points for
minimum, nominal, and maximum input voltage at room
temperature .
DS_E48SB9R625_01232007
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Turn on Waveform
0
0
0
0
Figure 4:
Turn-on transient at full rated load current
(5 ms/div). Top Trace: Vout; 5V/div; Bottom Trace: ON/OFF
input: 2V/div
Figure 5:
Turn-on transient at zero load current (5 ms/div). Top
Trace: Vout: 5V/div; Bottom Trace: ON/OFF input: 2V/div
For Vin Input Turn on Waveform
0
0
0
0
Figure 6:
Turn-on transient at full rated load current
(5 ms/div). Top Trace: Vout; 5V/div; Bottom Trace: Vin;
50V/div.
Figure 7:
Turn-on transient at zero load current (5 ms/div). Top
Trace: Vout: 5V/div; Bottom Trace: Vin; 50V/div.
DS_E48SB9R625_01232007
4
ELECTRICAL CHARACTERISTICS CURVES
0
0
0
0
Figure 8:
Output voltage response to step-change in load
current (50%-75%-50% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (100mV/div, 100us/div), Bottom Trace: Iout (10A/div).
Scope measurement should be made using a BNC cable
(length shorter than 20 inches). Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module.
Figure 9:
Output voltage response to step-change in load
current (50%-75%-50% of Io,max; di/dt=1A/µs). Load cap:
10uF ,tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (200mV/div, 100us/div), Bottom Trace: Iout (5A/div).
Scope measurement should be made using a BNC cable
(length shorter than 20 inches). Position the load between 51
mm to 76 mm (2 inches to 3 inches) from the module.
Figure 10:
Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (L
TEST
) of 12 µH. Capacitor Cs offset
possible battery impedance. Measure current as shown below
DS_E48SB9R625_01232007
5
安防电子
