NQ03012VMA15NVS

Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A 15A Non-Isolated DC/DC Converter in SIP configuration The NiQor™ SIP DC/DC converter is a non-isolated buck regulator, which employs synchronous rectification to achieve extremely high conversion efficiency. The NiQor family of converters are used predominately in DPA systems using a front end DC/DC high power brick (48Vin to low voltage bus). The non-isolated NiQor converters are then used at the point of load to create the low voltage outputs required by the design. Typical applications include telecom/datacom, industrial, medical, transportation, data processing/storage and test equipment. Non-Isolated NiQor vertical mount SIP module Operational Features • Ultra-high efficiency, up to 93% full load, 95% half • Delivers 15 amps of output current with minimal derating - no heatsink required • Input voltage range: 3.0 - 3.6V • Fixed frequency switching provides predictable EMI performance • Fast transient response time • On-board input and output filter capacitor • No minimum load requirement means no preload resistors required Mechanical Features • Industry standard SIP pin-out configuration •Industry standard size: 2.0” x 0.55” x 0.29 (50.8 x 14 x 7.3mm) • Total weight: 0.30 oz. (9.4 g), lower mass greatly reduces vibration and shock problems • Open frame construction maximizes air flow cooling • Available in both vertical and horizontal mounting Control Features • On/Off control • Output voltage trim (industry standard) permits custom voltages and voltage margining • Optional features include remote sense and wide output voltage trim (0.85V - 2.75V) Protection Features • Input under-voltage lockout disables converter at low input voltage conditions • Temperature compensated over-current shutdown protects converter from excessive load current or short circuits • Output over-voltage protection protects load from damaging voltages • Thermal shutdown Safety Features • UL 1950 recognized (US & Canada) • TUV certified to EN60950 • Meets 72/23/EEC and 93/68/EEC directives which facilitates CE Marking in user’s end product • Board and plastic components meet UL94V-0 flammability requirements Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 1 Product # NQ03xxxVMA15 Phone 1-888-567-9596 Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A MECHANICAL DIAGRAM Front View 2.00 (50.8) Vertical Mount Side View 0.288 (7.32) 0.185 (4.7) 0.315 Max (8.0 Max) 0.197 Max (5.0 Max) 0.550 (13.97) 0.050 Ref. 1 2 3 4 5 A 6 7 8 10 11 0.160 (4.06) (1.27) 0.050 (1.27) 0.040 PCB Ref. (1.02) 0.120 (3.05) 0.025 + 0.003 (0.64 + 0.076) 0.000 (0.00) 0.100 (2.54) 0.200 (5.08) 0.300 (7.62) 0.400 (10.16) 1.300 (33.02) 1.400 1.500 1.600 (35.56) (38.10) (40.64) 1.800 (45.72) 1.900 (48.26) SQ. Typ. NOTES 1) All pins are 0.025” (0.64mm) +/- 0.003 (0.076mm) square. 2) All Pins: Material - Copper Alloy Finish - Tin over Nickel plate 3) Vertical, horizontal, vertical with reverse pins and surface mount options (future) available. 4) Undimensioned components are shown for visual reference only. 6) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 7) Weight: 0.30 oz. (9.4 g) typical 8) Workmanship: Meets or exceeds IPC-A-610C Class II PIN DESIGNATIONS Pin No. Name Function 1 2 Vout(+) Vout(+) Positive output voltage Positive output voltage Pin Connection Notes: 1. Pin 10 - for fixed resistors, connect between Trim and Vout(+) to trim down or between Trim and Common (Ground) to trim up. 2. Pin 11 - see section on Remote ON/OFF pin for description of enable logic options. 3 4 5 A 6 7 8 10 11 SENSE(+) Vout(+) Common I share Common Vin(+) Vin(+) TRIM ON/OFF Positive remote sense Positive output voltage Current share* Positive input voltage Positive input voltage1 Output voltage trim2 LOGIC input to turn the converter on and off. Pins in Italics Shaded text are Optional * Contact factory for availability of current share modules. Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 2 Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A MECHANICAL DIAGRAM Front View 2.00 (50.8) Horizontal Mount Side View 0.288 (7.32) 0.185 (4.7) 0.315 Max (8.0 Max) 0.197 Max (5.0 Max) 0.550 (13.97) 0.025 + 0.003 (0.64 + 0.076) 1 2 3 4 5 A 6 7 8 10 11 SQ. Typ. 0.050 Ref. (1.27) 0.050 (1.27) 0.128 Min (3.25 Min) 0.040 PCB Ref. (1.02) 0.330 (8.38) 0.000 (0.00) 0.100 (2.54) 0.200 (5.08) 0.300 (7.62) 0.400 (10.16) 1.300 (33.02) 1.400 1.500 1.600 (35.56) (38.10) (40.64) 1.800 (45.72) 1.900 (48.26) See note on Thermal Considerations in Applications section. Vertical Mount Reversed Pins Front View 2.00 (50.8) Side View 0.288 (7.32) 0.185 (4.7) 0.315 Max (8.0 Max) 0.197 Max (5.0 Max) 0.550 (13.97) 1 2 3 4 5 A 6 7 8 10 11 0.050 Ref. 0.160 (4.06) (1.27) 0.050 (1.27) 0.040 PCB Ref. (1.02) 0.120 (3.05) 0.025 + 0.003 (0.64 + 0.076) 0.000 (0.00) 0.100 (2.54) 0.200 (5.08) 0.300 (7.62) 0.400 (10.16) 1.300 (33.02) 1.400 1.500 1.600 (35.56) (38.10) (40.64) 1.800 (45.72) 1.900 (48.26) 0.058 +.008 (1.47 +.20) SQ. Typ. Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 3 Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A ELECTRICAL CHARACTERISTICS - NQ03xxxVMA15 Series Parameter ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Operating Transient Protection Operating Temperature Storage Temperature Voltage at ON/OFF input pin INPUT CHARACTERISTICS Operating Input Voltage Range1 Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Maximum Input Current2 TA=25°C, airflow rate=300 LFM, Vin=3.3Vdc unless otherwise noted; full operating temperature range is -40°C to +105°C ambient temperature with appropriate power derating. Specifications subject to change without notice. Module Min. Typ. Max. Units Notes & Conditions All All All All All All All All All 0.9V 1.2V 1.5V 1.8V 2.5V All All All 0.9V 1.2V 1.5V 1.8V 2.5V 0.9-1.8V 2.5V 0.9-1.8V 2.5V All All All 0.9V 1.2V 1.5V 1.8V 2.5V All 0.9V 2.5V All 0.9V 1.2V 1.5V 1.8V 2.5V 3.0 -40 -55 -3 3.0 2.1 2.0 2.4 2.3 5.0 4.5 5.0 105 125 6.5 3.6 2.8 2.5 5.9 7.4 8.9 10.4 13.9 110 25 V V V °C °C V V V V A A A A A mA mA A 2s mV/V mV/V mV/V mV/V mV/V mA mA A A A µF µF V V V V V % % % % V V V V V continuous continuous 100ms transient Notes on pg. 6 100% 100% 100% 100% 100% Load, Load, Load, Load, Load, 3.0Vin, 3.0Vin, 3.0Vin, 3.0Vin, 3.0Vin, 0.9Vout 1.2Vout 1.5Vout 1.8Vout 2.5Vout No-Load Input Current Disabled Input Current Inrush Current Transient Rating Response to Input Transient Input Reflected-Ripple Current Input Terminal Ripple Current Recommended Input Fuse Input Filter Capacitor Value Recommended External Input Capacitance3 OUTPUT CHARACTERISTICS Output Voltage Set Point7 (50% load) 85 17 0.1 70 80 90 120 160 200 125 3 2 40 200 0.885 1.180 1.475 1.769 2.458 0.900 1.200 1.500 1.800 2.500 +0.1 +0.5 +0.3 +2.0 0.865 1.153 1.441 1.729 2.402 50mV/µs input transient (all) 20 pk-pk thru 1µH inductor, with 200µF tantalum; full load; Figs 24, 26 RMS with 200µF tantalum and 1µH; Figs 24, 26 fast blow external fuse recommended internal ceramic net 50mΩ also applies to wide-trim (0.85-2.75V) unit 0.917 1.223 1.529 1.834 2.548 Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range with sense pin with sense pin with sense pin, over sample, line, load, temperature & life (all) 0.944 1.258 1.573 1.888 2.622 Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 4 Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A Units Notes & Conditions 20MHz bandwidth; Fig 24, 27 Full Load Full Load ELECTRICAL CHARACTERISTICS (continued) - NQ03xxxVMA15 Series Parameter OUTPUT CHARACTERISTICS (cont.) Output Voltage Ripple and Noise Peak-to-Peak RMS Operating Output Current Range Output DC Over-Current Shutdown4 Maximum Output Capacitance5,6 DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection Output Voltage during Load Current Transient For a Step Change in Output Current (0.1A/µs) For a Step Change in Output Current (5A/µs) Settling Time Turn-On Transient Turn-On Time Start-Up Delay Time Start-Up Rise Time Output Voltage Overshoot EFFICIENCY 100% Load ModuleP Min. Typ. Max. All All All All All 0.9V 2.5V All All All All 0.9V 2.5V 0.9V 2.5V All 0.9V 1.2V 1.5V 1.8V 2.5V 0.9V 1.2V 1.5V 1.8V 2.5V All All All 15 6 0 16 25 35 12 15 40 4,000 mV mV A A µF dB dB mV mV µs Derate startup load current per Fig. 23 120 Hz; Figure 31 45 37 40 70 50 5.5 2.9 1.6 1.6 2.5 6.8 4.1 2.7 2.4 3.7 8.5 6.1 4.6 3.9 5.6 0 50%-75%-50% Iout max, 10µF, Fig 15-16 50%-75%-50% Iout max, 470µF, Fig 17-18 ms ms ms ms ms % % % % % % % % % % % to within 1.5% Vout nom., Fig 15-18 Load current & capacitance per Fig. 23 Enable to Vout=100% nom., Figs 19-20 Enable to 10%, Fig. 21 10% to 90%, Fig. 22 Resistive load up to 4,000µF Figures 1-4 50% Load 83.5 87 89 90.5 93 88 90.5 92 93 95 125 125 265 1.5 -3 Vin -5 -10 113 130 120 5 TBD 8.0 +10 +10 +10 145 300 330 6.5 0.6 Figures 1-4 TEMP. LIMITS FOR POWER DERATING Semiconductor Junction Temperature7 Board Temperature7 FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control Off-State Voltage On-State Voltage Pull-Up Voltage Output Voltage Trim Range1,8 °C °C kHz V V V % % % % °C °C Package rated to 150°C; Figs 5-14 UL rated max operating temp 130°C may decrease by up to 30 kHz at -40°C Figure A All All All 0.9V 1.2-2.5V Output Voltage Remote Sense Range1,9 All Output Over-Voltage Protection10 All Over-Temperature Shutdown All Over-Temperature Shutdown Restart Hysteresis All RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) All Calculated MTBF (MIL-217) All Field Demonstrated MTBF All Measured Vout+ to common pins; Table 1 Measured Vout+ to common pins Over full temp range; % of nominal Vout Average PCB Temperature 106 Hrs. TR-NWT-000332; 100% load, 200LFM, 40oC Ta 106 Hrs. MIL-HDBK-217F; 100% load, 200LFM, 40oC Ta 106 Hrs. See website for latest values Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 5 Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A ELECTRICAL CHARACTERISTICS (continued) - NQ03xxxVMA15 Series NOTES Note 1: Maintain a minimum of 0.35V headroom between input and output voltage to meet performance specifications. Note 2: Wide trim option unit will perform as the model with the output voltage that it is trimmed to. Applies to all specifcations where values differ by Vout. Note 3: Tantalum or similar with additional ceramic as needed to reduce ripple current in external capacitors. See Figure 21. Output capacitance of 1000µF on a 2.5V output. Note 6: When trimming the output voltage to less than 0.88V with more than 1000µF of output capacitance, consult factory for trim circuit recommendations. Note 7: Power derating curves are measured using an evaluation board consisting of 6 layers of 2 ounce copper. Note 8: Wide trim option unit has a setpoint of 0.9V and a trim range of 0.85V-2.75V. Note 9: In remote sense applications, when trimming down, the trim-down resistor should be connected to the sense pin for more accurate trimming results. Note 10: Indicates worst case specification for 0.9V unit. Higher output voltage units have a tighter specification range. The wide-trim unit carries the OVP set point of a 2.5Vout unit, which has a worst-case maximum OVP trip level of 135%. STANDARDS COMPLIANCE Parameter P STANDARDS COMPLIANCE Notes File # E194341 Certified by TUV test on entire assembly; board & plastic components UL94V-0 compliant ESD test, 8kV - NP, 15kV air - NP (Normal Performance) Section 7 - electrical safety, Section 9 - bonding/grounding UL/cUL 60950 EN60950 72/23/EEC 93/68/EEC Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 GR-1089-CORE Telcordia (Bellcore) GR-513 • An external input fuse must always be used to meet these safety requirements. Contact SynQor for official safety certificates on new releases or download from the SynQor website. QUALIFICATION TESTING Parameter P QUALIFICATION TESTING # Units 32 5 5 10 5 5 5 15 pins Test Conditions 10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability 95% rated Vin and load, units at derating point, 1000 hours 100g minimum, 2 drops in x and y axis, 1 drop in z axis -40°C to 100°C, unit temp. ramp 15°C/min., 500 cycles Toperating = min to max, Vin = min to max, full load, 100 cycles Tmin-10°C to Tmax+10°C, 5°C steps, Vin = min to max, 0-105% load 85°C, 85% RH, 1000 hours, continuous Vin applied except 5min./day MIL-STD-883, method 2003 • Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply robust, reliable product. Contact factory for official product family qualification document. OPTIONS SynQor provides various options for Packaging, Enable Logic, Pin Length and Feature Set for this family of DC/DC converters. Please consult the last page of this specification sheet for information on available options. PATENTS SynQor is protected under various patents, including but not limited to U.S. Patent numbers: 5,999,417; 6,222,742 B1; 6,594,159 B2; 6,545,890 B2. Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 6 Performance Curves Non-Isolated SIP Converter 100 95 90 3.0 - 3.6Vin 15A 94 93 92 Efficiency (%) Efficiency (%) 85 80 75 70 65 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 91 90 89 88 87 86 0 100 200 300 400 500 25 C 40 C 55 C 2.5 Vo 1.8 Vo 1.5 Vo 1.2 Vo 0.9 Vo Load Current (A) Air Flow (LFM) Figure 1: Efficiency at nominal output voltage vs. load current for all modules at 25°C and nominal input voltage. Figure 2: Efficiency at 1.5Vout and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage). 2.5 2.0 1.5 1.0 0.5 0.0 25 C 40 C 55 C 2.75 2.50 Power Dissipation (W) 2.00 1.75 1.50 1.25 1.00 0.75 0.50 0.25 0.00 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2.5 Vo 1.8 Vo 1.5 Vo 1.2 Vo 0.9 Vo Power Dissipation (W) 2.25 0 100 200 300 400 500 Load Current (A) Air Flow (LFM) Figure 3: Power dissipation at nominal output voltage vs. load current for all modules at 25°C and nominal input voltage. Figure 4: Power dissipation at 1.5Vout and 60% rated power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C (nominal input voltage). 16 14 12 10 Iout (A) 8 6 4 2 0 0 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) 25 40 55 70 85 Semiconductor junction temperature is within 1°C of surface temperature Ambient Air Temperature (oC) Figure 5: Maximum output power derating curves vs. ambient air temperature for 0.9Vout unit. Airflow rates of 50 LFM - 400 LFM with air flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount). Product # NQ03xxxVMA15 Phone 1-888-567-9596 Figure 6: Thermal plot of 0.9V converter at 15 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 11 to pin 1 (Vin nom, vert mount). Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 7 Performance Curves Non-Isolated SIP Converter 16 14 12 10 3.0 - 3.6Vin 15A Iout (A) 8 6 4 2 0 0 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) 25 40 55 o 70 85 Ambient Air Temperature ( C) Semiconductor junction temperature is within 1°C of surface temperature Figure 7: Maximum output power derating curves vs. ambient air temperature for 1.2Vout unit. Airflow rates of 50 LFM - 400 LFM with air flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount). 16 14 12 10 Figure 8: Thermal plot of 1.2V converter at 15 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 11 to pin 1 (Vin nom, vert mount). Iout (A) 8 6 4 2 0 0 25 40 55 70 85 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) Ambient Air Temperature (oC) Semiconductor junction temperature is within 1°C of surface temperature Figure 9: Maximum output power derating curves vs. ambient air temperature for 1.5Vout unit. Airflow rates of 50 LFM - 400 LFM with air flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount). 16 14 12 10 Figure 10: Thermal plot of 1.5V converter at 15 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 11 to pin 1 (Vin nom, vert mount). Iout (A) 8 6 4 2 0 0 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) 25 40 55 70 85 Ambient Air Temperature (oC) Semiconductor junction temperature is within 1°C of surface temperature Figure 11: Maximum output power derating curves vs. ambient air temperature for 1.8Vout unit. Airflow rates of 50 LFM - 400 LFM with air flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount). Product # NQ03xxxVMA15 Phone 1-888-567-9596 Figure 12: Thermal plot of 1.8V converter at 15 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 11 to pin 1 (Vin nom, vert mount). Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 8 Performance Curves Non-Isolated SIP Converter 16 14 12 10 3.0 - 3.6Vin 15A Iout (A) 8 6 4 2 0 0 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) 25 40 55 o 70 85 Ambient Air Temperature ( C) Semiconductor junction temperature is within 1°C of surface temperature Figure 13: Maximum output power derating curves vs. ambient air temperature for 2.5Vout unit. Airflow rates of 50 LFM - 400 LFM with air flowing across the converter from pin 11 to pin 1 (Vin nom, vert mount). Figure 14: Thermal plot of 2.5V converter at 15 amp load current with 55°C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 11 to pin 1 (Vin nom, vert mount). Figure 15: Output voltage response for 0.9V unit to step-change in load current (50-75-50% of Iout max; di/dt=0.1A/µs). Load cap: 10µF, 100mΩ ESR tantalum and 1µF ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div). Figure 16: Output voltage response for 2.5V unit to step-change in load current (50-75-50% of Iout max; di/dt=0.1A/µs). Load cap: 10µF, 100mΩ ESR tantalum and 1µF ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div). Figure 17: Output voltage response for 0.9V unit to step-change in load current (50-75-50% of Iout max; di/dt=5A/µs). Load cap: 470µF, 25mΩ ESR tantalum and 1µF ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div). Product # NQ03xxxVMA15 Phone 1-888-567-9596 Figure 18: Output voltage response for 2.5V unit to step-change in load current (50-75-50% of Iout max; di/dt=5A/µs). Load cap: 470µF, 25mΩ ESR tantalum and 1µF ceramic. Ch 1: Vout (50mV/div), Ch 2: Iout (5A/div). Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 9 Performance Curves Non-Isolated SIP Converter 3.0 - 3.6Vin 15A 2.5Vout 1.8Vout 1.5Vout 1.2Vout 0.9Vout 2.5Vout 1.8Vout 1.5Vout 1.2Vout 0.9Vout Figure 19: Turn-on transient at full load (resistive load) (2 ms/div). Ch 1: ON/OFF input (2V/div) Ch 2-6: Vout (1V/div) 7 6 5 4 3 2 1 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Max Delay Time Min Delay Time Figure 20: Turn-on transient at zero load (2 ms/div). Ch 1: ON/OFF input (2V/div) Ch 2-6: Vout (1V/div) 7 6 5 Delay Time (ms) Rise Time (ms) 4 3 2 1 0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 Max Rise Time Min Rise Time Output Voltage (V) Output Voltage (V) Figure 21: Minimum and Maximum Startup Delay Time (enable to 10%) over temperature versus output voltage (includes trimming). Figure 22: Minimum and Maximum Startup Rise Time (10% to 90%) over temperature versus output voltage (includes trimming). 14.0 12.0 10.0 Iout (A) 8.0 6.0 4.0 2.0 0.0 0 0.9V 1.0V 1.2V 1.5V 1.8V 2.5V 500 1000 1500 2000 2500 3000 3500 4000 Load Capacitance (uF) Figure 23: Maximum Startup Load Current versus Load Capacitance. Derate the load during startup according to this figure to avoid the possibility of over-current shutdown. Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 10 Performance Curves Non-Isolated SIP Converter 3.0 - 3.6Vin 15A See Fig. 23 source impedance 1 µH See Fig. 22 See Fig. 24 0.9Vout iS VSOURCE iC DC/DC Converter 10 µF VOUT 15 µF, 1.2Vout 1.5Vout 1.8Vout 2.5Vout ceramic 100mΩ ESR capacitor tantalum capacitor * See values for recommended external input capacitance. Inductor optional as needed. C* Figure 24: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 25), Input Reflected Ripple Current (Figure 26) and Output Voltage Ripple (Figure 27). Figure 25: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 1µH source impedance and 200µF tantalum capacitor (5A/div). See Figure 24. 0.9Vout 1.2Vout 1.5Vout 0.9Vout 1.2Vout 1.5Vout 1.8Vout 1.8Vout 2.5Vout 2.5Vout Figure 26: Input Reflected Ripple Current, is, through a 1 µH source inductor at nominal input voltage and rated load current (100 mA/div). See Figure 24. Figure 27: Output Voltage Ripple at nominal input voltage and rated load current (10 mV/div). Load capacitance: 10µF ceramic capacitor and 15µF tantalum capacitor. Bandwidth: 20 MHz. See Figure 24. Figure 28: Load current (5A/div) as a function of time when 0.9V converter attempts to turn on into a 10 mΩshort circuit. Top trace (10ms/div) is an expansion of the on-time portion of the bottom trace. Product # NQ03xxxVMA15 Phone 1-888-567-9596 Figure 29: Load current (5A/div) as a function of time when 2.5V converter attempts to turn on into a 10 mΩshort circuit. Top trace (10ms/div) is an expansion of the on-time portion of the bottom trace. Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 11 Performance Curves Non-Isolated SIP Converter 0.1 3.0 - 3.6Vin 15A -10 -15 Forward Transmission (dB) -20 -25 -30 -35 -40 -45 -50 -55 0.9 V 1.2 V 1.5 V 1.8 V 2.5 V Output Impedance ( ) 0.01 0.9 V 1.2 V 1.5 V 0.001 1.8 V 2.5 V 0.0001 10 100 1,000 10,000 100,000 -60 10 100 1,000 10,000 100,000 Hz Hz Figure 30: Magnitude of incremental output impedance (Zout = vout/iout) for nominal input voltage at full rated power. 25 20 Reverse Transmission (dB) Figure 31: Magnitude of incremental forward transmission (FT = vout/vin) for nominal input voltage at full rated power. 1 15 0.9 V 1.2 V 1.5 V 1.8 V 2.5 V Input Impedance ( ) 10 5 0 -5 -10 -15 -20 -25 10 100 1,000 10,000 100,000 0.9 V 0.1 1.2 V 1.5 V 1.8 V 2.5 V 0.01 10 100 1,000 10,000 100,000 Hz Hz Figure 32: Magnitude of incremental reverse transmission (RT = iin/iout) for nominal input voltage at full rated power. Figure 33: Magnitude of incremental input impedance (Zin = vin/iin) for nominal input voltage at full rated power. Product # NQ03xxxVMA15 Phone 1-888-567-9596 Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 12 Technical Specification Non-Isolated SIP Converter 3.0 - 3.6Vin 15A BASIC OPERATION AND FEATURES The NiQor series non-isolated converter uses a buck-converter that keeps the output voltage constant over variations in line, load, and temperature. The NiQor modules employ synchronous rectification for very high efficiency. Dissipation throughout the converter is so low that it does not require a heatsink or metal baseplate for operation. The NiQor converter can thus be built more simply and reliably using high yield surface mount techniques on a single PCB substrate. The NiQor series of SIPs and SMT converters uses the established industry standard footprint and pin-out configurations. nal resistor, connect the resistor Rtrim-down between Pin 10 (TRIM) and the Vout pins or the SENSE pin. For a desired decrease of the nominal output voltage, the value of the resistor should be: Rtrim-down = where [( VOUT _ 0.80 ∆VOUT _1 ) x 30100 ] _ Rbuffer (Ω) VOUT = Nominal Output Voltage ∆VOUT = Nominal VOUT - Desired VOUT Rbuffer = defined in Table 1 below (value internal to the module) Vout, s et 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 0.9 V Rbuffer 59 k Ω 78.7 k Ω 100 k Ω 100 k Ω 59 k Ω 5.11 k Ω CONTROL FEATURES REMOTE ON/OFF (Pin 11): The ON/OFF input, Pin 11, permits the user to control when the converter is on or off. There are currently two options available for the ON/OFF input as described in the table below. Other options may be added based on user demand. Pin-Open Option Description Converter state Pin Action N Logic Negative Off Pull Low = On O Logic Negative/Open On Pull High = Off Note: wide trim unit has trim range from 0.85-2.75V. Nominal voltage is 0.9V. Use Rbuffer value of 5.11kΩ. when trimming. Table 1: Rbuffer values for NiQor trim equation For example, to trim-down the output voltage of a 1.8V module by 5% to 1.71V, the Rtrim-down resistor value is calculated as follows: VOUT = 1.8V ∆VOUT = 1.8V - 1.71V = 0.09V Rbuffer = 100kΩ Figure A is a schematic view of the internal ON/OFF circuitry. Vin 10K ON/OFF 20K (N logic only) Rtrim-down = [((1.8 - 0.8)/0.09 -1) x 30100] - 100000 = 204.34kΩ TRIM-UP: To increase the output voltage using an external resistor, connect the resistor Rtrim-up between Pin 10 (TRIM) and the Common Ground Pins. For a desired increase of the nominal output voltage, the value of the resistor should be: PWM Enable Rtrim-up = 20K Negative Logic (N,O) 24080 ∆VOUT _ Rbuffer (Ω) where ∆VOUT = Nominal VOUT - Desired VOUT Rbuffer = defined in Table 1 Figure A: Schematic view of the internal ON/OFF circuitry OUTPUT VOLTAGE TRIM (Pin 10): The TRIM input permits the user to adjust the output voltage up or down according to the trim range specifications by using an external resistor or a voltage source. If the TRIM feature is not being used, leave the TRIM pin disconnected. TRIM-DOWN: To decrease the output voltage using an exterProduct # NQ03xxxVMA15 Phone 1-888-567-9596 For example, to trim-up the output voltage of a 2.5V module by 10% to 2.75V, the Rtrim-up resistor value is calculated as follows: ∆VOUT = 2.5V - 2.75V = 0.25V Rbuffer = 78.7kΩ Rtrim-up = (24080/0.25) - 78700 = 17.62kΩ Note: the TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the Doc.# 005-2NV3xxE Rev. E 6/24/04 Page 13 Technical Specification Non-Isolated SIP Converter output voltage too high may cause the over-voltage protection circuit to engage, particularly during transients. Total DC Variation of Vout: For the converter to meet its specifications, the maximum variation of the DC value of Vout, due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range. 3.0 - 3.6Vin 15A Over-Temperature Shutdown: A temperature sensor on the converter senses the average temperature of the module. The thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the Over-Temperature Shutdown value. It will allow the converter to turn on again when the temperature of the sensed location falls by the amount of the Over-Temperature Shutdown Restart Hysteresis value. PROTECTION FEATURES Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, described in more detail in the application note titled “Input System Instability”. The lockout circuitry is a comparator with DC hysteresis. When the input voltage is rising, it must exceed the typical Turn-On Voltage Threshold value (listed on the specification page) before the converter will turn on. Once the converter is on, the input voltage must fall below the typical Turn-Off Voltage Threshold value before the converter will turn off. Over Current Shutdown: The converter uses the control (high-side) MOSFET on-resistance to detect short circuit or excessive over-current conditions. The converter compensates for the temperature variation of the MOSFET on-resistance, keeping the overcurrent threshold roughly constant over temperature. Very short (