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Delphi Series L36SA, 2" x 1.6", 50W Family
DC/DC Power Module: 18~75V in, 3.3V/15A 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.
DATASHEET
DS_L36SA3R315_02142007
FEATURES
High Efficiency: 88% @ 3.3V/15A
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)
Monotonic startup into normal and
pre-biased loads
2250V isolation and basic insulation
No minimum load required
4:1 Input voltage range
ISO 9001, TL 9000, ISO 14001, QS 9000,
OHSAS 18001 certified manufacturing
facility
UL/cUL 60950 (US & Canada) Recognized,
and TUV (EN60950) Certified
CE mark meets 73/23/EEC and 93/68/EEC
directives.
OPTIONS
Positive On/Off logic
Sense
Heat spreader
APPLICATIONS
Telecom/Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial/Testing Equipment
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Summary of Contents for Delta Electronics Series L36SA
- Page 1 Delphi Series L36SA, 2” x 1.6”, 50W Family DC/DC Power Module: 18~75V in, 3.3V/15A 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.
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Page 2: Technical Specifications
TECHNICAL SPECIFICATIONS =25°C, airflow rate=300 LFM, V =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... - Page 3 ELECTRICAL CHARACTERISTICS CURVES 48Vin 24Vin 18Vin 75Vin 9 10 11 12 13 14 15 OUTPUT CURRENT (A) Figure 1: Efficiency vs. load current for minimum, nominal, and maximum input voltage at 25°C 16 21 26 31 36 41 46 51 56 61 66 71 INPUT VOLTAGE(V) Figure 3: Typical full load input characteristics at room temperature...
- Page 4 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, 1V/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).
- Page 5 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, 200us/div), Bottom Trace: I out (3.75A/div). Scope measurement should be made using a BNC cable (length shorter than 20 inches).
- Page 6 ELECTRICAL CHARACTERISTICS CURVES Figure 11: Input Terminal Ripple Current, i current and nominal input voltage with 12µH source impedance and 33µF electrolytic capacitor (500 mA/div, 2us/div). Copper Strip Vo(+) SCOPE Vo(-) Figure 13: Output voltage noise and ripple measurement test setup DS_L36SA3R315_02142007 , at full rated output...
- Page 7 ELECTRICAL CHARACTERISTICS CURVES Figure 14: Output voltage ripple at nominal input voltage and rated load current (Io=10A)(10 mV/div, 2us/div) Load capacitance: 1µF ceramic capacitor and 10µF tantalum capacitor. Bandwidth: 20 MHz. Scope measurements 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.
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Page 8: Design Considerations
DESIGN CONSIDERATIONS Input Source Impedance The impedance of the input source connecting to the DC/DC power modules will interact with the modules and affect the stability. A low ac-impedance input source is recommended. If the source inductance is more than a few µH, we advise adding a 10 to 100 µF electrolytic capacitor (ESR <... -
Page 9: Features Descriptions
FEATURES DESCRIPTIONS Over-Current Protection The modules include an internal output over-current protection circuit, which will endure current limiting for an unlimited duration during output overload. If the output current exceeds the OCP set point, the modules will automatically shut down (hiccup mode). The modules will try to restart after shutdown. - Page 10 FEATURES DESCRIPTIONS (CON.) Output Voltage Adjustment (TRIM) To increase or decrease the output voltage set point, the modules may be connected with an external resistor between the TRIM pin and either the SENSE(+) or SENSE(-). The TRIM pin should be left open if this feature is not used.
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Page 11: Thermal Considerations
THERMAL CONSIDERATIONS Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over the entire temperature range of the module. Convection cooling is usually the dominant mode of heat transfer. Hence, the choice of equipment to characterize the thermal performance of the power module is a wind tunnel. -
Page 12: Mechanical Drawing
MECHANICAL DRAWING PIN NO. NAME CASE (OPTION) +VIN –VIN ON/OFF TRIM –SENSE (OPTION) NEGATIVE OUTPUT VOLTAGE SENSE –VOUT +VOUT +SENSE (OPTION) POSITVE OUTPUT VOLTAGE SENSE ALL PINS ARE COPPER WITH TIN PLATING DS_L36SA3R315_02142007 OPEN FRAME VERSION FUNCTION CASE POSITIVE INPUT VOLTAGE NEGATIVE INPUT VOLTAGE NOT CONNECTED REMOTE ON/OFF... -
Page 13: Part Numbering System
PART NUMBERING SYSTEM Type of Input Number of Product Voltage Outputs 18~75V S- Single L- 2 Brick MODEL LIST MODEL NAME INPUT L36SA3R315NRFA 18V~75V L36SA05010NRFA 18V~75V L36SA12004NRFA 18V~75V Default remote on/off logic is negative and pin length is 0.170” For different remote on/off logic and pin length, please refer to part numbering system above or contact your local sales CONTACT: www.delta.com.tw/dcdc USA:...
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