FEATURES
High Efficiency: 87.5% @ 12V/4A
Size: 49.6mm x 39.4mm x 8.9mm
(1.95”x1.55”x0.35”)
Industry standard pin out
Fixed frequency operation
Input UVLO, OTP, Output OCP, OVP, (auto
recovery)
Pre-bias start up
2250V isolation and basic insulation
No minimum load required
4:1 Input voltage range
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 L36SA, 2 x 1.6, 50W Family
DC/DC Power Module: 18~75V in, 12V/4A out
The Delphi Series L36SA, 2” x 1.6”, 18~75V input, single output, isolated
DC/DC converter is the latest offering from a world leader in power
systems technology and manufacturing - Delta Electronics, Inc. This
L36SA series provides up to 50 watts of power or 15A of output current
(3.3V) in an industry standard 2” x 1.6” form factor and pinout. The Delphi
L36SA series operates from a wide 18~75V (4:1) input voltages. With
creative design technology and optimization of component placement,
these converters possess outstanding electrical and thermal
performances, as well as extremely high reliability under highly stressful
operating conditions. All models are fully protected from abnormal
input/output voltage, current, and temperature conditions. The Delphi
Series converters meet all safety requirements with basic insulation. An
optional heat spreader is available for extended operation.
OPTIONS
Positive On/Off logic
Sense
Heat Spreader
Heatsink
APPLICATIONS
Telecom/Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Test Equipment
DATASHEET
DS_L36SA12004_02142007
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
Maximum input voltage
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
Maximum Input Current
No-Load Input Current
Off Converter Input Current
Inrush Current(I
2
t)
Input Reflected-Ripple Current
Input Voltage Ripple Rejection
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 Current Range
Output over current protection
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)
Output Voltage Trim Range
(Across Pins 9 & 5, Pout
≦
max rated power)
Output Voltage Remote Sense Range (option)
Output Over-Voltage Protection
GENERAL SPECIFICATIONS
MTBF
Weight
Over-Temperature Shutdown
NOTES and CONDITIONS
L36SA12004 (Standard)
Min.
Typ.
Max.
80
100
130
125
2250
75
17
16
1
60
4
1
18
17
1.5
4
Units
Vdc
Vdc
°C
°C
Vdc
Vdc
Vdc
Vdc
Vdc
A
mA
mA
A
2
s
mA
dB
Vdc
mV
mV
mV
V
mV
mV
A
%
mV
mV
us
ms
ms
µF
%
%
2250
100
1500
300
Vdc
MΩ
pF
kHz
0.7
18
0.7
18
1
50
10
10
10
14.4
2.98
24.2
136
V
V
V
V
mA
uA
%
%
%
V
M hours
Grams
°C
Refer to Figure21 for measuring point
-40
-55
18
16
15
0.75
100% Load, 18Vin
P-P thru 12µH inductor, 5Hz to 20MHz
120 Hz
Vin=48V, Io=Io.max, Tc=25°C
Io=Io,min to Io,max
Vin=18V to 75V
Ta=-40°C to 85°C
Over sample load, line and temperature
5Hz to 20MHz bandwidth
Full Load, 1µF ceramic, 10µF tantalum
Full Load, 1µF ceramic, 10µF tantalum
11.880
20
60
12.000
±5
±5
±30
11.82
50
15
0
110
12.120
±10
±10
12.18
100
30
4
150
48V, 10µF Tan & 1µF Ceramic load cap, 0.1A/µs
50% Io.max to 75% Io.max
75% Io.max to 50% Io.max
100
100
200
8
8
Full load; 5% overshoot of Vout at startup
86
88
470
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Von/off at Ion/off=1.0mA
Von/off at Ion/off=0.0 µA
Ion/off at Von/off=0.0V
Logic High, Von/off=15V
Vin = 18V ~ 60V
Vin = 61V ~ 75V
Pout
≦
max rated power
Over full temp range; % of nominal Vout
Io=80% of Io, max; Ta=25°C
Refer to Figure21 for measuring point
2
2
-10
-5
DS_L36SA12004_02142007
2
ELECTRICAL CHARACTERISTICS CURVES
90
9
8
75Vin
48Vin
80
EFFICIENCY (%
7
70
LOSS (W)
18Vin
24Vin
48Vin
75Vin
6
5
4
3
2
2.5
3
3.5
4
24Vin
18Vin
60
50
0.5
1
1.5
2
1
0.5
1
1.5
2
2.5
3
3.5
4
OUTPUT CURRENT (A)
OUTPUT CURRENT (A)
Figure 1:
Efficiency vs. load current for minimum, nominal, and
maximum input voltage at 25°C
Figure 2:
Power dissipation vs. load current for minimum,
nominal, and maximum input voltage at 25°C.
3. 3
INPUT CURRENT(A
3
2. 7
2. 4
2. 1
1. 8
1. 5
1. 2
0. 9
0. 6
0. 3
0
16 21 26 31 36 41 46 51 56 61 66 71
I NPUT VO
LTAGE( V)
Figure 3:
Typical full load input characteristics at room
temperature
DS_L36SA12004_02142007
3
ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4:
Turn-on transient at full rated load current (resistive
load) (5 ms/div). Vin=48V.Top Trace: Vout, 5V/div; Bottom
Trace: ON/OFF input, 5V/div
Figure 5:
Turn-on transient at zero load current (5 ms/div).
Vin=48V.Top Trace: Vout, 5V/div; Bottom Trace: ON/OFF input,
5V/div
For Positive Remote On/Off Logic
Figure 6:
Turn-on transient at full rated load current (resistive
load) (5 ms/div). Vin=48V.Top Trace: Vout, 5V/div; Bottom
Trace: ON/OFF input, 5V/div
Figure 7:
Turn-on transient at zero load current (5 ms/div).
Vin=48V.Top Trace: Vout, 5V/div, Bottom Trace: ON/OFF input,
5V/div
DS_L36SA12004_02142007
4
ELECTRICAL CHARACTERISTICS CURVES
Figure 8:
Output voltage response to step-change in load
current (75%-50%-75% of Io, max; di/dt = 0.1A/µs). Load cap:
10µF, tantalum capacitor and 1µF ceramic capacitor. Top Trace:
Vout (100mV/div,500us/div), Bottom Trace: I out (2A/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 (75%-50%-75% of Io, max; di/dt = 2.0A/µs). Load cap:
330µF, 35m
Ω
ESR solid electrolytic capacitor and 1µF ceramic
capacitor. Top Trace: Vout (100mV/div, 500us/div), Bottom
Trace: I out (2A/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 above
DS_L36SA12004_02142007
5
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