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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
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TECHNICAL SPECIFICATIONS (Ambient Temperature=25°C, minimum airflow=200LFM, nominal V =12Vdc unless otherwise specified.) in PARAMETER NOTES and CONDITIONS NC12S0A0V/H15 Min. Typ. Max. Units ABSOLUTE MAXIMUM RATINGS Input Voltage 14 Vdc Operating Temperature (Vertical) With appropriate air flow and derating, see Figs 33 0 130 °C Operating Temperature (Horizontal) With appropriate air flow and derating, see Figs 39 0 125 °C Storage Temperature -40 125 °C Input/Output
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ELECTRICAL CHARACTERISTICS CURVES 90 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10.2 12 13.8 10.2 12 13.8 10 10 0 0 012 3456 7 89 101112131415 012 3456 7 89 101112131415 Output Current (A) Output Current (A) Figure 1: Converter efficiency vs. output current Figure 2: Converter efficiency vs. output current (0.9V output voltage) (1.2V output voltage) 100 100 90 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10.2 12 13.8 10.2 12 13.8 10 10 0 0 01 2 3 4 56 7 8 9 101112131415 01 2 3 4 5
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ELECTRICAL CHARACTERISTICS CURVES Figure 7: Output ripple & noise at 12Vin, 0.9V/15A out Figure 8: Output ripple & noise at 12Vin, 1.2V/15A out Figure 9: Output ripple & noise at 12Vin, 1.8V/15A out Figure 10: Output ripple & noise at 12Vin, 2.5V/15A out Figure 11: Output ripple & noise at 12Vin, 3.3V/15A out Figure 12: Output ripple & noise at 12Vin, 5.0V/15A out NC12S15A_01102008 4
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ELECTRICAL CHARACTERISTICS CURVES Figure 13: Turn on delay time at 12Vin, 0.9V/15A out Figure 14: Turn on delay time Remote On/Off, 0.9V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Ch2:ENABLE Ch3:Vout Ch4:PWRGD Figure 15: Turn on delay time at 12Vin, 2.5V/15A out Figure 16: Turn on delay time at Remote On/Off, 2.5V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Ch2:ENABLE Ch3:Vout Ch4:PWRGD Figure 17: Turn on delay time at 12Vin, 5.0V/15A out Figure 18: Turn on delay time at Remote On/Off,
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ELECTRICAL CHARACTERISTICS CURVES Figure 19: Typical transient response to step load change at Figure 20: Typical transient response to step load change at 10A/ μS from 50% to 75% and 75% to 50% of Io_max at 10A/ μS from 50% to 75% and 75% to 50% of Io_max at 12Vin, 0.9V out 12Vin, 1.2V out Figure 21: Typical transient response to step load change at Figure 22: Typical transient response to step load change at 10A/ μS from 50% to 75% and 75% to 50% of Io_max at 10A/ μS
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DESIGN CONSIDERATIONS FEATURES DESCRIPTIONS ENABLE (On/Off) 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 The ENABLE (on/off) input allows external circuitry to put 0.9Vdc to 5.0Vdc by a resistor from Trim pin to Ground. the NC converter into a low power dissipation (sleep) mode. Positive (active-high) ENABLE is available as The converter can be turned ON/OFF by rem
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The NC06/NC15/NC20 module has a trim range of 0.9V FEATURES DESCRIPTIONS (CON.) to 5.0V. The trim resistor equation for the NC6A/NC15A/ NC20A is : Input Under-Voltage Lockout 1170 Rs( Ω) = The input under-voltage lockout prevents the converter Vout − 0.9 from being damaged while operating when the input voltage is too low. The lockout occurs between 7.0V to Vout is the output voltage setpoint 8.0V. Rs is the resistance between Trim and Ground Rs values should not be less than
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FEATURES DESCRIPTIONS (CON.) Output Capacitance There is no output capacitor on the NC series modules. Power Good Hence, an external output capacitor is required for stable operation. For NC15 modules, an external 6.3V/680 μF The converter provides an open collector signal called low ESR capacitor (for example, OSCON) is required for Power Good. This output pin uses positive logic and is stable operation. open collector. This power good output is able to sink 5mA and set high when
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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 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. Thermal Testing Setup Delta’s DC/DC power
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THERMAL CURVES (NC12S0A0V15) NC12S0A0V15 (Standard) Output Current vs. Ambient Temperature and Air Velocity PWB FACING PWB @ Vout = 3.3V (Either Orientation) Output Current(A) 15 MODULE 12 Natural Convection 9 AIR VELOCITY 100LFM AND AMBIENT TEMPERATURE 200LFM MEASURED BELOW 6 300LFM 50.8 (2.0”) THE MODULE 400LFM AIR FLOW 3 0 17.5 (0.69”) 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature ( ℃) 35 (1.38”) Note: Wind Tunnel Test Setup Figure Dimensions are in Figure 35: Outpu
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THERMAL CURVES (NC12S0A0H15) NC12S0A0H15 (Standard) Output Current vs. Ambient Temperature and Air Velocity PWB FACING PWB @ Vout =3.3V (Either Orientation) Output Current(A) 15 MODULE 12 Natural Convection 9 AIR VELOCITY 100LFM AND AMBIENT TEMPERATURE 200LFM 6 MEASURED BELOW 300LFM THE MODULE 50.8 (2.0”) AIR FLOW 3 0 25 35 45 55 65 75 85 9.5 (0.37”) ℃ Ambient Temperature ( ) 19 (0.75”) Figure 41: Output current vs. ambient temperature and air Note: Wind Tunnel Test Setup Figure
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MECHANICAL DRAWING VERTICAL HORIZONTAL NC12S15A_01102008 13
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PART NUMBERING SYSTEM NC 12 S 0A0 V 15 P N F A Product Input Number of Output Output ON/OFF Pin Option Mounting Series Voltage outputs Voltage Current Logic Length Code NC- 12- S- Single 0A0- H- Horizontal 15 - 15A P- Positive R- 0.118” F- RoHS 6/6 A- Standard Non-isolated 10.2~13.8V output programmable V- Vertical N- Negative N- 0.14” (Lead Free) function. Converter MODEL LIST Efficiency Model Name Packaging Input Voltage Output Voltage Output Current 12Vin @ 100% load NC12S0A0V
