FEATURES High Efficiency: 93%@ 5Vin, 3.3V/5A out Small size and low profile: 0.80” x 0.45” x 0.27” (SMD) 0.90” x 0.40” x 0.25” (SIP) Standard footprint and pinout Resistor-based trim Output voltage programmable from 0.75V to 3.63V via external resistors Pre-bias startup No minimum load required Fixed frequency operation Input UVLO, OCP Remote ON/OFF ISO 9001, TL 9000, ISO 14001, QS 9000, OHSAS 18001 certified manufacturing facility UL/cUL 60950 (US & Canada) Recognized, Delphi DNT04, Non-Isolated Point of Load DC/DC Power Modules: 2.4~5.5Vin, 0.75~3.63Vo, 5A out OPTIONS The Delphi Series DNT04, 2.4-5.5V input, single output, Positive On/Off logic non-isolated Point of Load DC/DC converters are the latest offering SMD or SIP package from a world leader in power systems technology and manufacturing — Delta Electronics, Inc. The DNT04 series provides a programmable output voltage from 0.75V to 3.63V via external resistors. This product family is available in surface mount or SIP package and provides up to 5A of output current in an industry standard footprint. With creative design technology and optimization of component placement, these converters possess outstanding electrical and thermal performance, as APPLICATIONS Telecom/DataCom Distributed power architectures Servers and workstations performance and can provide full output current at up to 85℃ ambient LAN/WAN applications temperature with no airflow. Data processing applications well as extremely high reliability under highly stressful operating conditions. The DNT04, DATASHEET DS_DNT04SIP05_03292013 5A modules have excellent thermal TECHNICAL SPECIFICATIONS (TA = 25°C, airflow rate = 300 LFM, Vin = 2.4Vdc and 5.5Vdc, nominal Vout unless otherwise noted.) PARAMETER NOTES and CONDITIONS DNT04S0A0R05NFA Min. ABSOLUTE MAXIMUM RATINGS Input Voltage (Continuous) Operating Temperature Storage Temperature INPUT CHARACTERISTICS Operating Input Voltage Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Maximum Input Current No-Load Input Current Off Converter Input Current Inrush Transient Recommended Input Fuse OUTPUT CHARACTERISTICS Output Voltage Set Point Output Voltage Adjustable Range Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Output Current Range Output Voltage Over-shoot at Start-up Output DC Current-Limit Inception Output Short-Circuit Current (Hiccup Mode) DYNAMIC CHARACTERISTICS Dynamic Load Response Positive Step Change in Output Current Negative Step Change in Output Current Setting Time to 10% of Peak Devitation Turn-On Transient Start-Up Time, From On/Off Control Start-Up Time, From Input Maximum Output Startup Capacitive Load EFFICIENCY Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=0.75V FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control, (Negative logic) Logic Low Voltage Logic High Voltage Logic Low Current Logic High Current GENERAL SPECIFICATIONS MTBF Weight DS_DNT04SIP5A_03292013 Vo ≦ Vin –0.5V Typ. Max. Units 0 -40 -55 5.8 85 125 Vdc °C °C 2.4 5.5 V 2.1 2.0 Vin=4.5V Vo=3.3V, Io=Io,max 30 1 Vin=2.4V to 5.5V, Io=Io,min to Io,max Vin=5V, Io=Io, max Vin=2.4V to 5.5V Io=Io,min to Io,max Ta=-40℃ to 85℃ Over sample load, line and temperature 5Hz to 20MHz bandwidth Full Load, 1µF ceramic, 10µF tantalum Full Load, 1µF ceramic, 10µF tantalum -2.0 0.7525 Vo,set -3.0 40 10 Io,s/c 10µF Tantalum & 1µF Ceramic load cap, 2.5A/µs 50% Io, max to 100% Io, max 100% Io, max to 50% Io, max Io=Io.max Von/off, Vo=10% of Vo,set Vin=Vin,min, Vo=10% of Vo,set Full load; ESR ≧1mΩ Full load; ESR ≧10mΩ % Vo,set V +3.0 % Vo,set % Vo,set % Vo,set % Vo,set 60 15 5 5 220 3 mV mV A % Vo,set % Io Adc (rms) 220 220 25 mV mV µs 7 7 ms ms µF µF 1000 3000 Vin=5V, 100% Load Vin=5V, 100% Load Vin=5V, 100% Load Vin=5V, 100% Load Vin=5V, 100% Load Vin=5V, 100% Load Io=100% of Io, max; Ta=25°C +2.0 3.63 4.1 45 0.3 0.4 0.4 0 Module On, Von/off Module Off, Von/off Module On, Ion/off Module Off, Ion/off 0.1 TBD V V A mA mA 2 AS A 93.0 90.5 87.5 86.0 83.5 77.5 % % % % % % 300 kHz -0.2 2.5 0.2 1 2.3 0.3 Vin.max 10 1 V V µA mA M hours grams 2 ELECTRICAL CHARACTERISTICS CURVES Figure 1: Converter efficiency vs. output current (5Vin/3.3Vout) Figure 2: Converter efficiency vs. output current (5Vin/2.5Vout) Figure 3: Converter efficiency vs. output current (5Vin/1.8Vout) Figure 4: Converter efficiency vs. output current (5Vin/1.5Vout) Figure 5: Converter efficiency vs. output current (5Vin/1.2Vout) DS_DNT04SIP5A_03292013 Figure 6: Converter efficiency vs. output current (5Vin/0.75Vout) 3 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 7: Output ripple & noise at 5Vin, 3.3V/5A out, 50mV/div Figure 8: Output ripple & noise at 5Vin, 2.5V/5A out, 50mV/div Figure 9: Output ripple & noise at 5Vin, 1.8V/5A out, 50mV/div Figure 10: Output ripple & noise at 5Vin, 1.5V/5A out, 50mV/div Figure 11: Output ripple & noise at 5Vin, 1.2V/5A out, 50mV/div Figure 12: Output ripple & noise at 5Vin, 0.75V/5A out, 50mV/div DS_DNT04SIP5A_03292013 4 ELECTRICAL CHARACTERISTICS CURVES (CON.) Figure 13: Turn on delay time at 5Vin, 3.3V/5A out Top: Vout, 2V/div, Bottom: Vin, 5V/div; 2mS/div Figure 14: Turn on delay time at 5Vin, 2.5V/5A out Figure 15: Turn on delay time at 5Vin, 1.8V5A out Figure 16: Turn on delay time at 5Vin, 1.5V/5A out Top: Vout, 1V/div, Bottom: Vin, 5V/div; 2mS/div Figure 17: Turn on delay time at 5Vin, 1.2V/5A out Top: Vout , 1V/div, Bottom: Vin, 5V/div; 2mS/div DS_DNT04SIP5A_03292013 Top: Vout, 2V/div, Bottom: Vin, 5V/div; 2mS/div Top: Vout ,1V/div, Bottom: 5V/div; 2mS/div Figure 18: Turn on delay time at 5Vin, 0.75V/5A out Top: Vout, 0.5V/div, Bottom: Vin ,5V/div; 2mS/div 5 ELECTRICAL CHARACTERISTICS CURVES Figure 19: Typical transient response to step load change at 2.5A/µS from 100% to 50% of Io, max at 5Vin, 3.3Vout (Cout = 1uF ceramic, 10µF tantalum), 0.1V/div Figure 20: Typical transient response to step load change at 2.5A/µS from 50% to 100% of Io, max at 5Vin, 3.3Vout (Cout =1uF ceramic, 10µF tantalum), 0.1V/div Vbias=1V Figure 21: Output short circuit current 5Vin, 0.75Vout 20A/div, 10mS/div DS_DNT04SIP5A_03292013 Figure 22:Turn on with Prebias 5Vin, 3.3V/0A out, Vbias =1.0Vdc 2V/div, 10mS/div 6 DESIGN CONSIDERATIONS TEST CONFIGURATIONS Input Source Impedance TO OSCILLOSCOPE L VI(+) 2 100uF Tantalum BATTERY VI(-) Note: Input reflected-ripple current is measured with a simulated source inductance. Current is measured at the input of the module. Safety Considerations For safety-agency approval the power module must be installed in compliance with the spacing and separation requirements of the end-use safety agency standards. Figure 23: Input reflected-ripple test setup COPPER STRIP Vo 1uF 10uF SCOPE tantalum ceramic The power module should be connected to a low ac-impedance input source. Highly inductive source impedances can affect the stability of the module. An input capacitance must be placed close to the modules input pins to filter ripple current and ensure module stability in the presence of inductive traces that supply the input voltage to the module. Resistive Load For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. The power module has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a adequate time-delay fuse in the ungrounded lead. GND Note: Use a 10µF tantalum and 1µF capacitor. Scope measurement should be made using a BNC connector. Figure 24: Peak-peak output noise and startup transient measurement test setup. CONTACT AND DISTRIBUTION LOSSES VI Vo II Io LOAD SUPPLY GND CONTACT RESISTANCE Figure 25: Output voltage and efficiency measurement test setup Note: All measurements are taken at the module terminals. When the module is not soldered (via socket), place Kelvin connections at module terminals to avoid measurement errors due to contact resistance. η =( Vo × Io ) × 100 % Vi × Ii DS_DNT04SIP5A_03292013 7 FEATURES DESCRIPTIONS FEATURES DESCRIPTIONS (CON.) Remote On/Off Output Voltage Programming The DNT series power modules have an On/Off pin for remote On/Off operation. Both positive and negative On/Off logic options are available in the DNT series power modules. The output voltage of the DNT can be programmed to any voltage between 0.75Vdc and 3.63Vdc by connecting one resistor (shown as Rtrim in Figure 28) between the TRIM and GND pins of the module. Without this external resistor, the output voltage of the module is 0.7525 Vdc. To calculate the value of the resistor Rtrim for a particular output voltage Vo, please use the following equation: For positive logic module, connect an open collector (NPN) transistor or open drain (N channel) MOSFET between the On/Off pin and the GND pin (see figure 26). Positive logic On/Off signal turns the module ON during the logic high and turns the module OFF during the logic low. When the positive On/Off function is not used, leave the pin floating or tie to Vin (module will be On). For negative logic module, the On/Off pin is pulled high with an external pull-up resistor (see figure 27). Negative logic On/Off signal turns the module OFF during logic high and turns the module ON during logic low. If the negative On/Off function is not used, tie the pin to GND. (module will be On) Vo Vin ION/OFF On/Off RL Q1 GND 21070 Rtrim = − 5110 Ω Vo − 0 . 7525 For example, to program the output voltage of the DNS module to 1.8Vdc, Rtrim is calculated as follows: 21070 Rtrim = − 5110 Ω = 15 KΩ 1.8 − 0.7525 DNT can also be programmed by apply a voltage between the TRIM and GND pins (Figure 29). The following equation can be used to determine the value of Vtrim needed for a desired output voltage Vo: Vtrim = 0.7 − 0.1698 × (Vo − 0.7525) For example, to program the output voltage of a DNT module to 3.3 Vdc, Vtrim is calculated as follows Vtrim = 0.7 − 0.1698 × (3.3 − 0.7525) = 0.267V Figure 26: Positive remote On/Off implementation Vo Vo Vin Rpullup ION/OFF RLoad TRIM Rtrim On/Off RL GND Q1 Figure28: Circuit configuration for programming output voltage GND using an external resistor Figure 27: Negative remote On/Off implementation Over-Current Protection To provide protection in an output over load fault condition, the unit is equipped with internal over-current protection. When the over-current protection is triggered, the unit enters hiccup mode. The units operate normally once the fault condition is removed. DS_DNT04SIP5A_03292013 8 FEATURE DESCRIPTIONS (CON.) Vo Vtrim RLoad TRIM GND + _ Figure 29: Circuit Configuration for programming output voltage using external voltage source The amount of power delivered by the module is the voltage at the output terminals multiplied by the output current. When using the trim feature, the output voltage of the module can be increased, which at the same output current would increase the power output of the module. Care should be taken to ensure that the maximum output power of the module must not exceed the maximum rated power (Vo.set x Io.max ≤ P max). Voltage Margining Output voltage margining can be implemented in the DNT modules by connecting a resistor, R margin-up, from the Trim pin to the ground pin for margining-up the output voltage and by connecting a resistor, Rmargin-down, from the Trim pin to the output pin for margining-down. Figure 30 shows the circuit configuration for output voltage margining. If unused, leave the trim pin unconnected. A calculation tool is available from the evaluation procedure which computes the values of R margin-up and Rmargin-down for a specific output voltage and margin percentage. Vin Vo Rmargin-down Q1 On/Off Trim Rmargin-up Rtrim Q2 GND Figure 30: Circuit configuration for output voltage margining DS_DNT04SIP5A_03292013 9 THERMAL CONSIDERATIONS THERMAL CURVES 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 modules are characterized in heated vertical wind tunnels that simulate the thermal environments encountered in most electronics equipment. This type of equipment commonly uses vertically mounted circuit cards in cabinet racks in which the power modules are mounted. Figure 32: Temperature measurement location The allowed maximum hot spot temperature is defined at 125℃ DNT04S0A0R05(standard) Output Current vs. Ambient Temperature and Air Velocity @Vin=5V Vout=0.75~3.3V (Through PCB Orientation) Output Current (A) The following figure shows the wind tunnel characterization setup. The power module is mounted on a test PWB and is vertically positioned within the wind tunnel. The height of this fan duct is constantly kept at 25.4mm (1’’). 5 Natural Convection 4 3 Thermal Derating 2 Heat can be removed by increasing airflow over the module. To enhance system reliability, the power module should always be operated below the maximum operating temperature. If the temperature exceeds the maximum module temperature, reliability of the unit may be affected. PWB FANCING PWB 1 0 25 30 35 40 45 50 55 60 65 70 75 80 85 Ambient Temperature (℃) Figure 33: Output current vs. ambient temperature and air velocity @ Vin=5V, Vout=0.75V~3.3V(Through PCB Orientation) MODULE 50.8(2.00") AIR VELOCITY AND AMBIENT TEMPERATURE SURED BELOW THE MODULE AIR F LOW Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches) Figure 31: Wind tunnel test setup DS_DNT04SIP5A_03292013 10 PICK AND PLACE LOCATION SURFACE- MOUNT TAPE & REEL LEAD (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE Temperature (°C ) 250 200 150 Ramp-up temp. 0.5~3.0°C /sec. Peak temp. 2nd Ramp-up temp. 1.0~3.0°C /sec. 210~230°C 5sec. Pre-heat temp. 140~180°C 60~120 sec. Cooling down rate <3°C /sec. 100 Over 200°C 40~50sec. 50 0 60 120 Time ( sec. ) 180 240 300 LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE Temp. Peak Temp. 240 ~ 245 ℃ 220℃ Ramp down max. 4℃ /sec. 200℃ 150℃ Preheat time 90~120 sec. Time Limited 75 sec. above 220℃ Ramp up max. 3℃ /sec. 25℃ Time Note: All temperature refers to assembly application board, measured on the land of assembly application board. DS_DNT04SIP5A_03292013 11 MECHANICAL DRAWING SMD PACKAGE (OPTIONAL) SIP PACKAGE Note: All pins are copper alloy with matte tin(Pb free) plated over Nickel under-plating. DS_DNT04SIP5A_03292013 12 PART NUMBERING SYSTEM DNT 04 S 0A0 R 05 N Product Series Input Voltage Numbers of Outputs Output Voltage Package Type Output Current On/Off logic DNT- 3A/5A 04 - 2.4V~5.5V S - Single 0A0 Programmable R - SIP 05 - 5A S- SMD F A Option Code N- negative F- RoHS 6/6 (Default) (Lead Free) A - Standard Function P- positive MODEL LIST Model Name Package Input Voltage Output Voltage Efficiency Output Current 5Vin, 3.3Vdc full load DNT04S0A0S03NFA SMD 2.4V ~ 5.5Vdc 0.75V ~ 3.63Vdc 3A 93.5% DNT04S0A0R03NFA SIP 2.4V ~ 5.5Vdc 0.75V ~ 3.63Vdc 3A 94% DNT04S0A0S05NFA SMD 2.4V ~ 5.5Vdc 0.75V ~ 3.63Vdc 5A 94% DNT04S0A0R05NFA SIP 2.4V ~ 5.5Vdc 0.75V ~ 3.63Vdc 5A 93% CONTACT: www.deltaww.com/dcdc USA: Telephone: East Coast: 978-656-3993 West Coast: 510-668-5100 Fax: (978) 656 3964 Email: [email protected] Europe: Telephone: +31 (0)20 655 09 67 Fax: +31 (0)20 655 09 99 Email: [email protected] Asia & the rest of world: Telephone: +886 3 4526107 x6220 Fax: +886 3 4513485 Email: [email protected] WARRANTY Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available upon request from Delta. Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to revise these specifications at any time, without notice. DS_DNT04SIP5A_03292013 13