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Delphi NC15 Series Non-Isolated Point of Load
DC/DC Power Modules: 12Vin, 0.9V-5.0Vout, 15A
The Delphi NC15 Series, 12V input, single output, non-isolated point of
load DC/DC converters are the latest offering from a world leader in
power systems technology and manufacturing ― Delta Electronics, Inc.
The NC15 series operates from a 12V nominal input, provides up to 15A
of power in a vertical or horizontal mounted through-hole package and
the output can be resistor- or voltage-trimmed from 0.9Vdc to 5.0Vdc. It
provides a very cost effective point of load solution. With creative design
technology and optimization of component placement, these converters
possess outstanding electrical and thermal performance, as well as
extremely high reliability under highly stressful operating conditions.
DATASHEET
DS_NC12S15A_01102008
FEATURES
High Efficiency:
91% @ 12Vin, 5V/15A out
Size: 30.5x27.9x11.4mm
(1.20"×1.10"×0.45") -- Vertical
30.5x27.9x12.9mm
(1.20"×1.10"×0.51") -- Horizontal
Voltage and resistor-based trim
No minimum load required
Output voltage programmable from
0.9Vdc to 5.0Vdc via external resistors
Fixed frequency operation
Input UVLO, output OCP, SCP
Power good output signal
Remote ON/OFF (default: Positive)
ISO 9000, TL 9000, ISO 14001 certified
manufacturing facility
UL/cUL 60950-1 (US & Canada)
Recognized, and TUV (EN60950-1)
Certified
CE mark meets 73/23/EEC and 93/68/EEC
directives
OPTIONS
Vertical or horizontal versions
Negative ON/OFF logic
APPLICATIONS
DataCom
Distributed power architectures
Servers and workstations
LAN / WAN applications
Data processing applications
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Summary of Contents for Delta Electronics NC15 Series
- Page 1 DC/DC converters are the latest offering from a world leader in power systems technology and manufacturing ― Delta Electronics, Inc. The NC15 series operates from a 12V nominal input, provides up to 15A of power in a vertical or horizontal mounted through-hole package and the output can be resistor- or voltage-trimmed from 0.9Vdc to 5.0Vdc.
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Page 2: Technical Specifications
TECHNICAL SPECIFICATIONS (Ambient Temperature=25°C, minimum airflow=200LFM, nominal V PARAMETER ABSOLUTE MAXIMUM RATINGS Input Voltage Operating Temperature (Vertical) Operating Temperature (Horizontal) 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... - Page 3 ELECTRICAL CHARACTERISTICS CURVES 10.2 Output Current (A) Figure 1: Converter efficiency vs. output current (0.9V output voltage) 10.2 Output Current (A) Figure 3: Converter efficiency vs. output current (1.8V output voltage) 10.2 Output Current (A) Figure 5: Converter efficiency vs. output current (3.3V output voltage) NC12S15A_01102008 13.8...
- Page 4 ELECTRICAL CHARACTERISTICS CURVES Figure 7: Output ripple & noise at 12Vin, 0.9V/15A out Figure 9: Output ripple & noise at 12Vin, 1.8V/15A out Figure 11: Output ripple & noise at 12Vin, 3.3V/15A out NC12S15A_01102008 Figure 8: Output ripple & noise at 12Vin, 1.2V/15A out Figure 10: Output ripple &...
- Page 5 ELECTRICAL CHARACTERISTICS CURVES Figure 13: Turn on delay time at 12Vin, 0.9V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 15: Turn on delay time at 12Vin, 2.5V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 17: Turn on delay time at 12Vin, 5.0V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD NC12S15A_01102008 Figure 14: Turn on delay time Remote On/Off, 0.9V/15A out Ch2:ENABLE Ch3:Vout Ch4:PWRGD...
- Page 6 ELECTRICAL CHARACTERISTICS CURVES Figure 19: Typical transient response to step load change at 10A/μS from 50% to 75% and 75% to 50% of Io_max at 12Vin, 0.9V out Figure 21: Typical transient response to step load change at 10A/μS from 50% to 75% and 75% to 50% of Io_max at 12Vin, 2.5V out NC12S15A_01102008 Figure 20: Typical transient response to step load change at...
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Page 7: Design Considerations
DESIGN CONSIDERATIONS The NC15 is a single phase and voltage mode controlled Buck topology. Block diagram of the converter is shown in Figure 23. The output can be trimmed in the range of 0.9Vdc to 5.0Vdc by a resistor from Trim pin to Ground. The converter can be turned ON/OFF by remote control. -
Page 8: Over-Current And Short-Circuit Protection
FEATURES DESCRIPTIONS (CON.) Input Under-Voltage Lockout The input under-voltage lockout prevents the converter from being damaged while operating when the input voltage is too low. The lockout occurs between 7.0V to 8.0V. Over-Current and Short-Circuit Protection The NC series modules have non-latching over-current and short-circuit protection circuitry. - Page 9 FEATURES DESCRIPTIONS (CON.) Power Good The converter provides an open collector signal called Power Good. This output pin uses positive logic and is open collector. This power good output is able to sink 5mA and set high when the output is within ±10% of output set point.
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Page 10: Thermal Consideration
THERMAL CONSIDERATION Thermal management is an important part of the system design. To ensure proper, reliable operation, sufficient cooling of the power module is needed over entire temperature range 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 11 THERMAL CURVES (NC12S0A0V15) FACING PWB AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE AIR FLOW Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 32: Wind tunnel test setup Figure 33: Temperature measurement location * The allowed maximum hot spot temperature is defined at 130 NC12S0A0V15 (Standard) Output Current vs.
- Page 12 THERMAL CURVES (NC12S0A0H15) FACING PWB AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED BELOW THE MODULE AIR FLOW Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 38: Wind tunnel test setup Figure 39: Temperature measurement location * The allowed maximum hot spot temperature is defined at 125 NC12S0A0H15 (Standard) Output Current vs.
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Page 13: Mechanical Drawing
MECHANICAL DRAWING VERTICAL HORIZONTAL NC12S15A_01102008... -
Page 14: Part Numbering System
PART NUMBERING SYSTEM Product Input Number of Series Voltage outputs S- Single 0A0- Non-isolated 10.2~13.8V output programmable Converter MODEL LIST Model Name Packaging NC12S0A0V15PNFA Vertical NC12S0A0H15PNFA Horizontal CONTACT: www.delta.com.tw/dcdc USA: Telephone: East Coast: (888) 335 8201 West Coast: (888) 335 8208 Fax: (978) 656 3964 Email: DCDC@delta-corp.com...