DC/DC Power Modul

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 (US & Canada) Recognized, and TUV (EN60950) Certified Delphi NC15 Series Non-Isolated Point of Load DC/DC Power Modules: 12Vin, 0.9V-5.0Vout, 15A www.DataSheet4U.com OPTIONS Vertical or horizontal versions Negative ON/OFF logic 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. APPLICATIONS DataCom Distributed power architectures Servers and workstations LAN/WAN applications Data processing applications DATASHEET DS_NC12S15A_02072007 TECHNICAL SPECIFICATIONS (Ambient Temperature=25°C, minimum airflow=200LFM, nominal Vin=12Vdc unless otherwise specified.) 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 Input Reflected-Ripple Current Input Ripple Rejection OUTPUT CHARACTERISTICS Output Voltage Adjustment Range Output Voltage Set Point Output Voltage Regulation Over Load Over Line Output Voltage Ripple and Noise Peak-to-Peak RMS Output Current Range Output Voltage Over-shoot at Start-up Output Voltage Under-shoot at Power-Off Output DC Current-Limit Inception Output Short-Circuit Current DYNAMIC CHARACTERISTICS Output Dynamic Load Response Positive Step Change in Output Current Negative Step Change in Output Current Settling Time Turn-On Transient Start-Up Time, from On/Off Control Start-Up Time, from input power Minimum Output Capacitance Maximum Output Startup Capacive Load Minimum Input Capacitance EFFICIENCY Vo=0.9V Vo=1.2V Vo=1.5V Vo=1.8V Vo=2.5V Vo=3.3V Vo=5.0V FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control Logic High Logic Low GENERAL SPECIFICATIONS MTBF Weight NOTES and CONDITIONS Min. With appropriate air flow and derating, see Figs 33 With appropriate air flow and derating, see Figs 39 Non-isolated 10.2 -40 -40 -40 NC12S0A0V/H15 Typ. Max. 14 130 125 125 NA 12.0 9.0 7.5 1.5 13.8 Units Vdc °C °C °C V V V V V A mA mA mA dB V % % % mV mV A % mV A 100% Load, 10.2Vin, 5.0Vout Vin=12V, Vout=0.9V Remote OFF Refer to Figure 31. 120Hz 0.9 -2.5 -1.0 -0.2 8.1 65 9 150 45 5.0 +2.5 +1.0 +0.2 50 20 15 1 100 With a 1.0% trim resistor Io=Io_min to Io_max Vin=Vin_min to Vin_max 5Hz to 20MHz bandwidth Full Load, 100nF ceramic, 10µF tantalum Full Load, 100nF ceramic, 10µF tantalum Vin=12V, Turn ON Vin=12V, Turn OFF Hiccup mode Hiccup mode 12Vin, 100nF ceramic, 10µF tantalum load cap, 10A/µs 50% Io_max to 75% Io_max 75% Io_max to 50% Io_max Settling to be within regulation band (Vo +/- 2.5%) From Enable high to 10% of Vo From Vin=12V to 10% of Vo Ex: OSCON 6.3V/680µF (ESR 13 mΩ max.) Full Load Ex: OSCON 16V/270µF (ESR 18 mΩ max.) Vin=12V, Io=15A Vin=12V, Io=15A Vin=12V, Io=15A Vin=12V, Io=15A Vin=12V, Io=15A Vin=12V, Io=15A Vin=12V, Io=15A fixed Positive logic (internally pulled high) Module On (or leave the pin open) Module Off Telcordia SR-332 Issue1 Method1 Case3 at 50°C 0 16 100 100 200 10 10 680 6800 270 75 79 81 84 87 89 91 300 2.4 0 2.1 16.5 5.5 0.8 mV mV µs ms ms µF µF µF % % % % % % % KHz V V M hours grams NC12S15A_02012007 2 ELECTRICAL CHARACTERISTICS CURVES 90 80 70 90 80 70 Efficiency (%) Efficiency (%) 10.2 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 60 50 40 30 20 12 13.8 10 0 0 1 2 3 4 10.2 12 13.8 5 6 7 8 9 10 11 12 13 14 15 Output Current (A) Output Current (A) Figure 1: Converter efficiency vs. output current (0.9V output voltage) 100 90 80 Figure 2: Converter efficiency vs. output current (1.2V output voltage) 100 90 80 Efficiency (%) Efficiency (%) 10.2 70 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 70 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 12 13.8 10.2 12 13.8 Output Current (A) Output Current (A) Figure 3: Converter efficiency vs. output current (1.8V output voltage) 100 90 80 Figure 4: Converter efficiency vs. output current (2.5V output voltage) 100 90 80 Efficiency (%) Efficiency (%) 70 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 70 60 50 40 30 20 10 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 10.2 12 13.8 10.2 12 13.8 Output Current (A) Output Current (A) Figure 5: Converter efficiency vs. output current (3.3V output voltage) Figure 6: Converter efficiency vs. output current (5.0V output voltage) NC12S15A_02012007 3 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_02012007 4 ELECTRICAL CHARACTERISTICS CURVES Figure 13: Turn on delay time at 12Vin, 0.9V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 14: Turn on delay time Remote On/Off, 0.9V/15A out Ch2:ENABLE Ch3:Vout Ch4:PWRGD Figure 15: Turn on delay time at 12Vin, 2.5V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 16: Turn on delay time at Remote On/Off, 2.5V/15A out Ch2:ENABLE Ch3:Vout Ch4:PWRGD Figure 17: Turn on delay time at 12Vin, 5.0V/15A out Ch2:Vin Ch3:Vout Ch4:PWRGD Figure 18: Turn on delay time at Remote On/Off, 5.0V/15A out Ch2:ENABLE Ch3:Vout Ch4:PWRGD NC12S15A_02012007 5 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 20: Typical transient response to step load change at 10A/µS from 50% to 75% and 75% to 50% of Io_max at 12Vin, 1.2V 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 Figure 22: Typical transient response to step load change at 10A/µS from 50% to 75% and 75% to 50% of Io_max at 12Vin, 5.0V out NC12S15A_02012007 6 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. Positive on/off (ENABLE pin) logic implies that the converter DC output is enabled when this signal is driven high (greater than 2.4V) or floating and disabled when the signal is driven low (below 0.8V). Negative on/off logic is optional and could also be ordered. The converter provides an open collector signal called Power Good. The power good signal is pulled low when output is not within ±10% of Vout or Enable is OFF. The converter can protect itself by entering hiccup mode against over current and short circuit condition. Also, the converter will shut down when an over voltage protection is detected. FEATURES DESCRIPTIONS ENABLE (On/Off) The ENABLE (on/off) input allows external circuitry to put the NC converter into a low power dissipation (sleep) mode. Positive (active-high) ENABLE is available as standard. Positive ENABLE (active-high) units of the NC series are turned on if the ENABLE pin is high or floating. Pulling the pin low will turn off the unit. With the active high function, the output is guaranteed to turn on if the ENABLE pin is driven above 2.4V. The output will turn off if the ENABLE pin voltage is pulled below .8V. The ENABLE input can be driven in a variety of ways as shown in Figures 24, 25 and 26. If the ENABLE signal comes from the primary side of the circuit, the ENABLE can be driven through either a bipolar signal transistor (Figure 24) or a logic gate (Figure 25). If the enable signal comes from the secondary side, then an opto-coupler or other isolation devices must be used to bring the signal across the voltage isolation (please see Figure 26). NC6A/15A/20A Vin Enable Vout Trim Ground Ground Figure 23: Block Diagram Figure 24: Enable Input drive circuit for NC series 5V NC6A/15A/20A Vin Enable Vout Safety Considerations It is recommended that the user to provide a very fast-acting type fuse in the input line for safety. The output voltage set-point and the output current in the application could define the current rating of the fuse. Trim Ground Ground Figure 25: Enable input drive circuit using logic gate. NC6A/15A/20A Vin Enable Vout Trim Ground Ground Figure 26: Enable input drive circuit example with isolation. NC12S15A_02012007 7 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. The NC06/NC15/NC20 module has a trim range of 0.9V to 5.