Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Features The NH020-Series Power SIPs use advanced, surface-mount technology and deliver high-quality, compact, dc-dc conversion at an economical price. Applications Distributed power architectures Communication equipment Computer equipment Small size: 63.5 mm x 5.6 mm x 14.0 mm (2.50 in. x 0.22 in. x 0.55 in.) Nonisolated output Constant frequency High efficiency: 86% typical Overcurrent protection Remote on/off Output voltage adjustment Overtemperature protection UL* 1950 Recognized, CSA C22.2 No. 950-95 Certified, approved to EN60950/IEC950 Meets FCC Class A radiated limits Options Tight tolerance output -40 C operation Description The NH020-Series Power SIPs are nonisolated dc-dc converters that operate over an input voltage range of 4.5 Vdc to 5.5 Vdc and provide a precisely regulated dc output. The SIPs have a maximum output current rating of 6 A at a typical full-load efficiency of 86%. Standard features include remote on/off and output voltage adjustment. * UL is a registered trademark of Underwriters Laboratories, Inc. CSA is a registered trademark of Canadian Standards Association. NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Input Voltage (continuous) Operating Ambient Temperature* Storage Temperature On/Off Terminal Voltage Symbol VI TQ31 Tstg Von/off Min -- -40/0 -40 -- Max 7.0 115 115 6.0 Unit Vdc C C Vdc * Forced convection--1.5 ms-1 (300 lfm) minimum. Higher ambient temperatures are possible with increased airflow and/or decreased power output. See the Thermal Considerations section for more details. The -40 C operation is optional. See Ordering Information section. Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Table 1. Input Specifications Parameter Operating Input Voltage Maximum Input Current (VI = 0 V to 5.5 V; IO = IO, max) Inrush Transient Input Reflected-ripple Current, Peak-to-peak (5 Hz to 20 MHz, 500 nH source impedance; see Figure 14.) Input Ripple Rejection (120 Hz) Symbol VI II, max Min 4.5 -- Typ 5.0 -- Max 5.5 6.1 Unit Vdc A i2t -- -- 1 A2s -- -- 625 -- mAp-p -- -- 60 -- dB Fusing Considerations CAUTION: This power SIP is not internally fused. An input line fuse must always be used. This power SIP can be used in a wide variety of applications, ranging from simple stand-alone operation to an integrated part of a sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a normal-blow fuse with a maximum rating of 10 A (see Safety Considerations section). To aid in the proper fuse selection for the given application, information on inrush energy and maximum dc input current is provided. Refer to the fuse manufacturer's data for further information. 2 Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Electrical Specifications (continued) Table 2. Output Specifications Parameter Device or Device Suffix NH020M NH020M2 NH020Y NH020Y2 NH020G NH020F NH020F2 NH020M NH020M2 NH020Y NH020Y2 NH020G NH020F NH020F2 Symbol Min Typ Max Unit VO, set VO, set VO, set VO, set VO, set VO, set VO, set VO VO VO VO VO VO VO 1.46 1.485 1.75 1.782 2.43 3.18 3.27 1.43 1.455 1.716 1.745 2.39 3.16 3.24 1.5 1.5 1.8 1.8 2.5 3.3 3.3 -- -- -- -- -- -- -- 1.54 1.515 1.85 1.818 2.57 3.39 3.33 1.57 1.545 1.883 1.855 2.61 3.44 3.36 Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc Vdc All M Y F, G All -- -- -- -- -- -- -- -- -- -- 0.1 0.4 0.3 0.1 -- 0.4 0.6 0.5 0.3 17 %VO %VO %VO %VO mV F, G, M Y All -- -- -- -- -- -- -- -- -- 25 30 100 External Load Capacitance (electrolytic) Output Current (Forced convection, 1.5 ms-1 (300 lfm)) All All -- IO 0 0 -- -- Output Current-limit Inception (VO = 90% of VO, set; see Feature Descriptions section.) Efficiency (VI = 5.0 V; IO = IO, max; TA = 25 C; see Figures 3--6 and 16.) All IO -- 350 -- %IO, max NH020M NH020Y NH020G NH020F All -- 70 73 79 84 -- 72 75 82 86 500 -- -- -- -- -- % % % % kHz All All -- -- -- -- 80 200 -- -- mV s All All -- -- -- -- 80 200 -- -- mV s Output Voltage Set Point (VI = 5.0 V; IO = IO, max; TA = 25 C) Output Voltage (Over all operating input voltage, resistive load, and temperature conditions until end of life.) Output Regulation: Line (VI = 4.5 V to 5.5 V) Load (IO = 0 to IO, max) Temperature (TA = 0 C to 55 C) Output Ripple and Noise Voltage (See Figures 7--9 and 15.): RMS Peak-to-peak (5 Hz to 20 MHz) Switching Frequency Dynamic Response (IO/t = 1 A/10 s, VI = 5.0 V, TA = 25 C; see Figures 10 and 11.): Load Change from IO = 0% to 100% of IO, max: Peak Deviation Settling Time (VO < 10% peak deviation) Load Change from IO = 100% to 0% of IO, max: Peak Deviation Settling Time (VO < 10% peak deviation) Tyco Electronics Corp. mVrms mVrms mVp-p 10,000 F 6 A 3 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 General Specifications Parameter Calculated MTBF (IO = 80% of IO, max; TA = 25 C) Weight Min Typ 1,400,000 -- -- Max 7 (0.25) Unit hours g (oz.) Solder Ball and Cleanliness Requirements The open frame (no case or potting) power SIP will meet the solder ball requirements per J-STD-001B. These requirements state that solder balls must neither be loose nor violate the power SIP minimum electrical spacing. The cleanliness designator of the open frame power SIP is C00 (per J specification). Feature Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions and Design Considerations sections for further information. Parameter Remote On/Off Signal Interface (VI = 4.5 V to 5.5 V; open collector pnp transistor or equivalent compatible; signal referenced to GND terminal; see Figure 20 and Feature Descriptions section.): Logic Low (ON/OFF pin open)--SIP On: Ion/off = 0.0 A Von/off = 0.3 V Logic High (Von/off > 2.8 V)--SIP Off: Ion/off = 10 mA Von/off = 5.5 V Turn-on Time (IO = 80% of IO, max; VO within 1% of steady state; see Figures 12 and 13.) Output Voltage Set-point Adjustment Range Overtemperature Protection (shutdown) 4 Device Symbol Min Typ Max Unit All All Von/off Ion/off -0.7 -- -- -- 0.3 50 V A All All All Von/off Ion/off -- -- -- -- -- -- 1.5 6.0 10 5.0 V mA ms NH020M NH020Y NH020G NH020F All Vtrim Vtrim Vtrim Vtrim TQ31 100 100 90 84 -- -- -- -- -- 125 150 120 110 110 -- %VO, nom %VO, nom %VO, nom %VO, nom C Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Characteristic Curves 80 INPUT CURRENT, II (A) 7 II, max = 6.1 A 6 5 4 (%) 8 78 EFFICIENCY, 79 77 76 VI = 4.5 V VI = 5.0 V VI = 5.5 V 75 3 74 2 73 0 1 2 3 4 5 6 1 OUTPUT CURRENT, IO (A) 0 8-1541(C) 0 1 2 3 4 5 6 INPUT VOLTAGE, VI (V) 8-1209(C) Figure 3. NH020M Typical Efficiency at Room Temperature Figure 1. Typical Input Characteristic at Room Temperature and 6 A Output 85 0 (%) VI = 5.5 V VI = 5.0 V VI = 4.5 V 75% EFFICIENCY, NORMALIZED OUTPUT VOLTAGE, VO (V) 80 100% 50% VI = 4.5 V VI = 5.0 V VI = 5.5 V 75 70 65 25% 60 0 1 2 3 4 5 6 OUTPUT CURRENT, IO (A) 0% 8-2587(C) 0 5 10 15 20 25 OUTPUT CURRENT, IO (A) 8-2586(C) Figure 4. NH020Y Typical Efficiency at Room Temperature Figure 2. Typical Output Characteristics and TA = 25 C Tyco Electronics Corp. 5 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Characteristic Curves (continued) 87.0 86.5 85.0 OUTPUT VOLTAGE, VO (V) (20 mV/div) (%) 85.5 EFFICIENCY, 86.0 84.5 84.0 VI = 4.5 V VI = 5.0 V VI = 5.5 V 83.5 83.0 82.5 VI = 5 V 82.0 0 1 2 3 4 5 6 OUTPUT CURRENT, IO (A) 8-1544(C) Figure 5. NH020G Typical Efficiency at Room Temperature TIME, t (1 s/div) 8-2588(C) Figure 7. NH020M Typical Output Ripple Voltage at Room Temperature and 6 A Output 90 87 86 VI = 4.5 V VI = 5.0 V VI = 5.5 V 85 84 83 0 1 2 3 4 5 6 OUTPUT CURRENT, IO (A) 8-1545(C) OUTPUT VOLTAGE, VO (V) (50 mV/div) (%) 88 EFFICIENCY, 89 VI = 5 V Figure 6. NH020F Typical Efficiency at Room Temperature TIME, t (1 s/div) 8-2589(C) Figure 8. NH020Y Typical Output Ripple Voltage at Room Temperature and 6 A Output 6 Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W OUTPUT VOLTAGE, VO (V) (50 mV/div) VI = 5 V OUTPUT CURRENT, IO (A) (5 A/div) OUTPUT VOLTAGE, VO (V) (20 mV/div) Characteristic Curves (continued) TIME, t (100 s/div) 8-1206(C).a TIME, t (1 s/div) 8-2590(C) OUTPUT CURRENT, IO (A) (5 A/div) OUTPUT VOLTAGE, VO (V) (1 V/div) OUTPUT VOLTAGE, VO (V) (50 mV/div) Figure 9. NH020F, G Typical Output Ripple Voltage at Room Temperature and 6 A Output Figure 11. Typical Transient Response to Step Load Change from 100% to 0% of IO, max at Room Temperature and 5 V Input (Waveform Averaged to Eliminate Ripple Component.) TIME, t (100 s/div) 8-1205(C).a TIME, t (200 s/div) 8-1207(C) Figure 10. Typical Transient Response to Step Load Change from 0% to 100% of IO, max at Room Temperature and 5 V Input (Waveform Averaged to Eliminate Ripple Component.) Tyco Electronics Corp. Figure 12. Typical Start-Up Transient at Room Temperature, 5 V Input and 6 A Output 7 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Characteristic Curves (continued) COPPER STRIP VO REMOTE ON/OFF, Von/off (V) (5 V/div) 47 F TANTALUM SCOPE RESISTIVE LOAD GND 8-513(C).o OUTPUT VOLTAGE, VO (V) (1 V/div) Note: Use a 47 F tantalum capacitor. Scope measurement should be made using a BNC socket. Position the load between 51 mm and 76 mm (2 in. and 3 in.) from the SIP. Figure 15. Peak-to-Peak Output Noise Measurement Test Setup CONTACT AND DISTRIBUTION LOSSES VI TIME, t (50 s/div) 8-1208(C) Figure 13. Typical Start-Up Transient with Remote On/Off, at Room Temperature, 5 V Input, and 6 A Output Test Configurations II SUPPLY VO IO LOAD GND CONTACT RESISTANCE 8-1173(C) Note: All measurements are taken at the SIP terminals. When socketing, place Kelvin connections at SIP terminals to avoid measurement errors due to socket contact resistance. VO x IO = ----------------------- x 100 VI x II % TO OSCILLOSCOPE Figure 16. Output Voltage and Efficiency Measurement Test Setup L 500 nH VI(+) CS 220 F BATTERY ESR < 0.1 @ 20 C, 100 kHz VI(-) 8-203(C).j Note: Input reflected-ripple current is measured with a simulated source inductance of 500 nH. Capacitor CS offsets possible battery impedance. Current is measured at the input of the SIP. Figure 14. Input Reflected-Ripple Test Setup 8 Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Design Considerations Input Source Impedance The power SIP should be connected to a low acimpedance input source. Highly inductive source impedances can affect the stability of the SIP. Adding external capacitance close to the input pins of the SIP can reduce the ac impedance and ensure system stability. The minimum recommended input capacitance (C1) is a 100 F electrolytic capacitor (see Figures 17 and 19). When using a tantalum input capacitor, take care not to exceed device power rating because of the capacitor's failure mechanism (for example, a short circuit). The filter inductor should be rated to handle the maximum power SIP input current of 6.1 Adc. If the amount of input reflected-ripple current is unacceptable with an external L-C filter, more capacitance may be added across the input supply to form a C-L-C filter. For best results, the filter components should be mounted close to the power SIP. TO OSCILLOSCOPE CURRENT PROBE LSOURCE TO OSCILLOSCOPE LFILTER VI CURRENT PROBE + SUPPLY LSOURCE C1 100 F (TYP) VI 1 H (MAX) C2 GND C1 100 F (TYP) C2 10 F (MAX) 8-1216(C) GND 8-1215(C) Figure 17. Setup with External Capacitor to Reduce Input Ripple Voltage To reduce the amount of ripple current fed back to the input supply (input reflected-ripple current), an external input filter can be added. Up to 10 F of ceramic capacitance (C2) may be externally connected to the input of the SIP, provided the source inductance (LSOURCE) is less than 1 H (see Figure 17). To further reduce the input reflected-ripple current, a filter inductor (LFILTER) can be connected between the supply and the external input capacitors (see Figure 18). As mentioned above, a 100 F electrolytic capacitor (C1) should be added across the input of the SIP to ensure stability of the unit. The electrolytic capacitor should be selected for ESR and RMS current ratings to ensure safe operation in the case of a fault condition. Refer to Figure 19 for the appropriate electrolytic capacitor ratings. Tyco Electronics Corp. Figure 18. Setup with External Input Filter to Reduce Input Reflected-Ripple Current and Ensure Stability 10.0 C1 RMS CURRENT RATING (A) SUPPLY + 1.0 C2 = 0 F C2 = 2 F C2 = 4 F C2 = 6 F C2 = 8 F C2 = 10 F 0.1 50 100 200 300 400 500 600 700 800 900 1000 C1 ESR (m) 8-1217(C) Figure 19. Electrolytic Capacitor ESR and RMS Current Rating Data 9 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Safety Considerations For safety-agency approval of the system in which the power SIP is used, the power SIP must be installed in compliance with the spacing and separation requirements of the end-use safety agency standard, i.e., UL 1950, CSA C22.2 No. 950-95, and the EN60950/ IEC950. For the converter output to be considered meeting the requirements of safety extra-low voltage (SELV), the input must meet SELV requirements. Data Sheet April 2000 The SIP has internal capacitance to reduce noise at the ON/OFF pin. Additional capacitance is not generally needed and may degrade the start-up characteristics of the SIP. CAUTION: Never ground the on/off terminal. Grounding the on/off terminal disables an important safety feature and may damage the SIP or the customer system. The power SIP has extra-low voltage (ELV) outputs when all inputs are ELV. The input to these units is to be provided with a maximum 10 A normal-blow fuse in the ungrounded lead. If an input electrolytic capacitor is to be used, it should be selected using the design information found in the Design Considerations section. VI + Vswitch Vo ON/OFF Ion/off + Von/off GND Feature Descriptions 8-1175(C) Overcurrent Protection Figure 20. Remote On/Off Implementation To provide protection in a fault condition, the unit is equipped with internal overcurrent protection. The unit operates normally once the fault condition is removed. Power SIP will supply up to 350% of rated current for less than 1.25 seconds before unit enters thermal shutdown. Remote On/Off To turn the power SIP on and off, the user must supply a switch to control the voltage at the on/off terminal (Von/off). The switch can be an open collector pnp transistor connected between the on/off terminal and the VI terminal or its equivalent (see Figure 20). During a logic low when the ON/OFF pin is open, the power SIP is on and the maximum Von/off generated by the power SIP is 0.3 V. The maximum allowable leakage current of the switch when Von/off = 0.3 V and VI = 5.5 V (Vswitch = 5.2 V) is 50 A. During a logic high, when Von/off = 2.8 V to 5.5 V, the power SIP is off and the maximum Ion/off is 10 mA. The switch should maintain a logic high while sourcing 10 mA. If not using the remote on/off feature, leave the ON/OFF pin open. 10 Output Voltage Set-Point Adjustment (Trim) Output voltage set-point adjustment allows the output voltage set point to be increased or decreased by connecting an external resistor between the TRIM pin and either the VO pin (decrease output voltage) or GND pin (increase output voltage). The trim range for the NH020F is +10%, -16%. The trim range for the NH020G is 10% of VO, nom. The trim range for SIPs that produce less than 2.5 VO is +20%, -0%. Connecting an external resistor (Rtrim-down) between the TRIM and VO pin decreases the output voltage set point as defined in the following equation. For the F (3.3 VO) SIP: 18.23 R t r i m -down = ------------------------------ - 15 k V O - V O , adj For the G (2.5 VO) SIP: 6.975 R t r i m -down = ------------------------------------- - 15 k 2.498 - V O , adj Note: Output voltages below 2.5 V cannot be trimmed down. The test results for these configurations are displayed in Figures 21 and 22. Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Feature Descriptions (continued) Connecting an external resistor (Rtrim-up) between the TRIM and GND pins increases the output voltage set point to VO, adj as defined in the following equation: Output Voltage Set-Point Adjustment (Trim) (continued) 28 R trim-up = ------------------------------ - 1 k V O , adj - V O The test results for this configuration are displayed in Figures 23--26. Leave the TRIM pin open if not using that feature. 10M 2.30 2.20 2.25 2.15 2.05 2.10 10k 1.50 Figure 21. NH020G Rtrim-down Test Results 2.00 8-1549(C) 1.95 ADJUSTED OUTPUT VOLTAGE, VO, adj (V) 100k 1.90 2.50 1.85 2.45 1.75 1.80 2.40 1.70 2.35 1.65 2.30 1.60 10k 2.25 1M 1.55 100k TRIM RESISTOR VALUE, Rtrim-up ( ) TRIM RESISTOR VALUE, Rtrim-down ( ) 1M 8-1551(C).a Figure 23. NH020M Rtrim-up Test Results 10M 2.30 2.27 2.21 2.24 2.17 2.14 10k 1.80 Figure 22. NH020F Rtrim-down Test Results 2.11 8-1548(C) 100k 2.08 ADJUSTED OUTPUT VOLTAGE, VO, adj (V) 2.05 3.3 2.02 3.2 1.99 3.1 1.96 3.0 1.93 2.9 1.89 2.8 1.86 10k 1M 1.83 100k TRIM RESISTOR VALUE, R trim-up ( ) TRIM RESISTOR VALUE, Rtrim-down ( ) ADJUSTED OUTPUT VOLTAGE, VO, adj (V) 1M ADJUSTED OUTPUT VOLTAGE, VO, adj (V) 8-2591(C) Figure 24. NH020Y Rtrim-up Test Results Tyco Electronics Corp. 11 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Feature Descriptions (continued) Thermal Considerations Output Voltage Set-Point Adjustment (Trim) (continued) The power SIP operates in a variety of thermal environments; however, sufficient cooling should be provided to help ensure reliable operation of the unit. Heat is removed by conduction, convection, and radiation to the surrounding environment. TRIM RESISTOR VALUE, Rtrim-up ( ) 10M The thermal data presented is based on measurements taken in a wind tunnel. The test setup shown in Figure 27 was used to collect data for Figure 33. Note that the airflow is parallel to the long axis of the SIP. The derating data applies to airflow along either direction of the SIP's long axis. 1M 100k 10k 2.50 2.55 2.60 2.65 2.70 2.75 2.80 177.8 (7.0) AIRFLOW ADJUSTED OUTPUT VOLTAGE, VO, adj (V) 8-1550(C) Figure 25. NH020G Rtrim-up Test Results TRIM RESISTOR VALUE, Rtrim-up ( ) 1M AIR VELOCITY AND AMBIENT TEMPERATURE MEASURED HERE 76.2 (3.0) POWER SIP 76.2 (3.0) 100k 8-1199(C) Note: Dimensions are in millimeters and (inches). Figure 27. Thermal Test Setup 10k 3.35 3.40 3.45 3.50 3.55 3.60 3.65 ADJUSTED OUTPUT VOLTAGE, VO, adj (V) Proper cooling can be verified by measuring the power SIP's temperature at lead 7 of Q31 as shown in Figure 28. 8-1547(C) Figure 26. NH020F Rtrim-up Test Results Overtemperature Protection To provide additional protection in a fault condition, the unit is equipped with a nonlatched thermal shutdown circuit. The shutdown circuit engages when lead 7 of Q31 (shown in Figure 28) exceeds approximately 125 C. The unit attempts to restart when Q31 cools down and cycles on and off while the fault condition exists. Recovery from shutdown is accomplished when the cause of the overtemperature condition is removed. 12 Q31 LEAD #7 8-1149(C).a Figure 28. Temperature Measurement Location The temperature at this location should not exceed 115 C. The output power of the SIP should not exceed the rated power for the SIP as listed in the Ordering Information table. Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Thermal Considerations (continued) Convection Requirements for Cooling To predict the approximate cooling needed for the SIP, determine the power dissipated as heat by the unit for the particular application. Figures 29--32 show typical heat dissipation for the SIP over a range of output currents. POWER DISSIPATION, P D (W) 3.5 POWER DISSIPATION, P D (W) 3.5 3.0 3.0 2.5 2.0 1.5 VI = 5.5 V VI = 5.0 V VI = 4.5 V 1.0 0.5 0.0 0 1 2.5 2 3 4 5 6 OUTPUT CURRENT, IO (A) 8-1543(C) 2.0 Figure 31. NH020G Power Dissipation vs. Output Current 1.5 VI = 4.5 V VI = 5.0 V VI = 5.5 V 1.0 0.5 4.0 0 1 2 3 4 5 6 OUTPUT CURRENT, IO (A) 8-1542(C) Figure 29. NH020M Power Dissipation vs. Output Current POWER DISSIPATION, PD (W) 4.0 POWER DISSIPATION, PD (W) 0.0 3.5 3.0 2.5 2.0 1.5 VI = 4.5 V VI = 5.0 V VI = 5.5 V 1.0 0.5 0.0 3.5 0 3.0 1 2 3 4 5 6 OUTPUT CURRENT, IO (A) 8-1546(C) VI = 5.5 V VI = 5.0 V VI = 4.5 V 2.5 2.0 Figure 32. NH020F Power Dissipation vs. Output Current 1.5 1.0 0.5 0.0 0 1 2 3 4 5 6 OUTPUT CURRENT, IO (A) 8-2592(C) Figure 30. NH020Y Power Dissipation vs. Output Current Tyco Electronics Corp. 13 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Thermal Considerations (continued) For example, if the unit dissipates 2.0 W of heat, the minimum airflow in an 80 C environment is 1.0 m/s (200 ft./min.). Convection Requirements for Cooling (continued) With the known heat dissipation and a given local ambient temperature, the minimum airflow can be chosen from the derating curves in Figure 33. POWER DISSIPATION, PD (W) Data Sheet April 2000 Keep in mind that these derating curves are approximations of the ambient temperatures and airflows required to keep the power SIP temperature below its maximum rating. Once the SIP is assembled in the actual system, the SIP's temperature should be checked as shown in Figure 28 to ensure it does not exceed 115 C. 5.0 4.5 Layout Considerations 4.0 3.5 3.0 Copper paths must not be routed between pins 2 and 3 and pins 7 and 8. 2.0 m/s (400 ft/min.) 1.5 m/s (300 ft/min.) 1.0 m/s (200 ft/min.) 0.5 m/s (100 ft/min.) NATURAL CONVECTION 2.5 2.0 1.5 1.0 0.5 0.0 0 10 20 30 40 50 60 70 80 90 100 110 120 AMBIENT TEMPERATURE, TA (C) 8-1201(C) Figure 33. Power Derating vs. Local Ambient Temperature and Air Velocity 14 Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Outline Diagram Dimensions are in millimeters and (inches). Tolerances: x.x 0.5 mm (0.02 in.), x.xx 0.25 mm (0.010 in.). Front View 63.5 (2.50) NH020M dc-dc POWER SIP 1 2 3 4 14.0 (0.55) 5 6 7 8 9 3.0 (0.12) 2.54 (0.100) 0.64 (0.025) SQUARE PINS 48.26 (1.900) 7.1 (0.28) Side View 6.1 (0.24) MAX 2.79 (0.110) 2.79 (0.110) Pin Function 1 2 3 4 5 6 7 8 9 VO VO VO GND GND VI VI TRIM ON/OFF 8-1176(C).a Tyco Electronics Corp. 15 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Recommended Hole Pattern Component-side footprint. Dimensions are in millimeters and (inches). 63.5 (2.50) 7.1 (0.28) 48.3 (1.90) 5.6 (0.22) 2.54 (0.100) PIN 9 PIN 1 2.79 (0.110) KEEP OUT 1.17 (0.046) PLATED-THROUGH HOLE 1.78 (0.070) PAD SIZE BOTH SIDES 8-1176(C).a Note: No copper should be placed between pins 2 and 3 and pins 7 and 8. Ordering Information Please contact your Tyco Electronics' Account Manager or Field Application Engineer for pricing and availability. Table 3. Device Codes Input Voltage 5V 5V 5V 5V Output Voltage 1.5 V 1.8 V 2.5 V 3.3 V Output Power 9W 10.8 W 15 W 20 W Device Code NH020M NH020Y NH020G NH020F Comcode 107870065 TBD 107917114 107221145 Table 4. Device Options 16 Option Suffix Tight tolerance output (not available on the NH020G) -40 C operation 2 5 Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Notes Tyco Electronics Corp. 17 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Notes 18 Tyco Electronics Corp. Data Sheet April 2000 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Notes Tyco Electronics Corp. 19 NH020-Series Power SIPs: 5 Vdc Input; 1.5 Vdc to 3.3 Vdc Output; 20 W Data Sheet April 2000 Tyco Electronics Power Systems, Inc. 3000 Skyline Drive, Mesquite, TX 75149, USA +1-800-526-7819 FAX: +1-888-315-5182 (Outside U.S.A.: +1-972-284-2626, FAX: +1-972-284-2900 http://power.tycoeleectronics.com Tyco Electronics Corportation reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information. (c) 2001 Tyco Electronics Corporation, Harrisburg, PA. All International Rights Reserved. Printed in U.S.A. April 2000 DS00-127EPS (Replaces DS98-338EPS) Printed on Recycled Paper