Technical S pecification DQ61212QMA06 48V in +/-12V 60 Watt 2000Vdc Quar ter-brick Input Outputs Power Isolation DC/DC Conver ter Th e DQ 6121 2QM A06 D ua lQ or ™ Me g a se ri e s i s a du al o ut p u t co nv er t er t h at us es th e ind u st r y s t an d ar d q u ar t er b r ick p a ckage siz e. Th e ver y high efficie ncy is a re su lt o f S yn Q or ’s p aten ted top ol ogy tha t u se s sy nc hr on ou s re ctifica tio n an d an inn ovative co ns tru ction des ign to min imize h eat d is sip a t ion an d al lo w ext r emel y h igh po wer d en s iti es. Th e p owe r d is si pa ted b y th e c onver ter is so l ow th at a h ea tsin k is no t r eq ui red , whi ch s aves cos t, weigh t, h eigh t, an d a p pl i c at io n e ffor t . A ll of t h e p owe r a n d con t ro l c omp on en ts a r e mo u nted to th e m ul ti-l a yer PCB s ub str a te with h igh -y iel d s ur fa ce mou n t t ech no lo gy, r esu l ti ng in a mor e r el ia bl e p r od uc t . RoHS 5/6 Compliant (see page 15 ). DQ61212QMA06 Module Operational Features • Very high efficiency, >91% at full rated load current • Delivers up to 60 Watts of output power with minimal derating - no heatsink required • Wide input voltage range: 35V – 75V, with 100V 100ms input voltage transient capability • Fixed frequency switching provides predictable EMI performance • No minimum load requirement means no preload resistors required Mechanical Features • Industry standard pin-out configuration • Industry standard size: 1.45” x 2.3” (36.8x58.4mm) • Total height less than 0.43” (10.9mm), permits better airflow and smaller card pitch • Total weight: 1.5 oz. (43 g) • Flanged pins designed to permit surface mount soldering (avoid wave solder) using FPiP technique Contr ol Features • On/Off control referenced to input side (positive and negative logic options are available) • Output voltage trim: +10%/-10%, permits custom voltages and voltage margining Product # DQ61212QMA06 Phone 1-888-567-9596 Dual Output www.synqor.com Pr otection Features • Input under-voltage lockout disables converter at low input voltage conditions • Output current limit and short circuit protection protects converter and load from permanent damage and consequent hazardous conditions • Active back bias limit prevents damage to converter from external load induced pre-bias • Output over-voltage protection protects load from damaging voltages • Thermal shutdown protects converter from abnormal environmental conditions Safety Features • 2000V, 30 MΩ input-to-output isolation provides input/output ground separation • UL/cUL 60950-1 recognized (US & Canada), basic insulation rating • TUV certified to EN60950-1 • 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.# 005-2DQ612E Rev. C 01/11/06 Page 1 Technical Specification MECHANICAL DIAGRAM 35-75V +12V & -12V 60W Quarter-brick Input: Outputs: Power: Package: 2.30 (58.4) 0.475 (12.07) 0.38 2.00 (9.7) 0.225 (50.8) (5.71) 0.14 (3.6) 0.025 (.64) 0.700 0.725 Top View (17.78) (18.41) 1.45 (36.8) 0.350 (8.89) Side View Bottom side Clearance See Note 8 0.43 0.060+/-0.030 (1.52+/-0.76) (10.9) Lowest Component Flanged Pin See Note 9 Load Board 0.145 (3.68) See Note 2 NOTES PIN DESIGNATIONS 1) All pins are 0.040” (1.02mm) diameter with 0.080” (2.03 mm) diameter standoff shoulders. 2) Other pin extension lengths available. Recommended pin length is 0.03” (0.76mm) greater than the PCB thickness. 3) All Pins: Material - Copper Alloy Finish - Tin/Lead over Nickel plate 4) Undimensioned components are shown for visual reference only. 5) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) 6) Weight: 1.5 oz. (43 g) typical 7) Workmanship: Meets or exceeds IPC-A-610C Class II 8) UL/TUV standards require a clearance greater than 0.04” Pin No. Name Function 1 Vin(+) Positive input voltage 2 ON/OFF TTL input to turn converter on and off, referenced to Vin(-), with internal pull up. 3 Vin(-) Negative input voltage 4 12Vout(-) 12V negative output voltage 5 OP RTN Output Return 6 TRIM Output voltage trim 7 12Vout(+) 12V positive output voltage (1.02mm) between input and output for Basic insulation. This issue should be considered if any copper traces are on the top side of the user’s board. Note that the ferrite cores are considered part of the input/primary circuit. 9) The flanged pins are designed to permit surface mount soldering (allowing to avoid the wave soldering process) through the use of the flanged pin-in-paste technique. Product # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 2 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick DQ61212QMA06 ELECTRICAL CHARACTERISTICS TA=25°C, airflow rate=300 LFM, Vin=48Vdc unless otherwise noted; full operating temperature range is -40°C to +100°C ambient temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units 100 80 100 2000 100 125 18 V V V V °C °C V Notes & Conditions ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Operating Transient Protection Isolation Voltage (input to output) Operating Temperature Storage Temperature Voltage at ON/OFF input pin INPUT CHARACTERISTICS Operating Input Voltage Range Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Voltage Hysteresis Maximum Input Current 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 Component Values (L\C) Recommended External Input Capacitance -40 -55 -2 35 48 75 V 32 28.5 2.5 33 29.5 3.5 34 30.5 4.5 2.1 80 5 0.01 V V V A mA mA A 2s mV mA mA A µH\µF µF 70 2.0 150 175 4.7\2.0 47 OUTPUT CHARACTERISTICS Output Voltage Set Point (-12V) Output Voltage Set Point (+12V) Total Output Voltage Regulation (-12V) Total Output Voltage Regulation (+12V) Output Voltage Ripple and Noise (+12V)1 Peak-to-Peak RMS Operating Output Current Range (+12V) Output DC Current-Limit Inception (+12V) Short-Circuit Protection - redundant shutdown (+12V) Output DC Current-Limit Shutdown Voltage Back-Drive Current Limit while Enabled Back-Drive Current Limit while Disabled Maximum Output Capacitance -12.60 11.55 0 5.7 0.18 DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection Output Voltage during Load Current Transient For a Step Change in -12V Output Current (.1A/µs) For a Step Change in +12V Output Current (.1A/µs) Settling Time Turn-On Transient Turn-On Time Start-Up Inhibit Time Output Voltage Overshoot EFFICIENCY 100% Load 50% Load 180 -12.06 12.06 80 12 6 12 8 0.54 10 20 20 -11.55 12.60 180 30 5 6.5 0.90 4,800 1000V/ms input transient RMS thru 10µH inductor; Figures 23 & 25 RMS; Figures 23 & 24 Fast blow external fuse recommended Internal values; see Figure E Typical ESR 0.1-0.2Ω, see Figure 23 48Vin, 50% load on each voltage 48Vin, 50% load on each voltage Cross regulation, line, load, temp; Figures 7 - 10 Cross regulation, line, load, temp; Figures 7 - 10 20MHz bandwidth; Figures 23 & 26 Full Load; see Figures 23 & 26 Full Load; see Figures 23 & 26 Subject to thermal derating; Figures 11 - 18 Output Voltage 10% Low; Figures 27 - 28 Figures 29 - 30 Negative current drawn from output Negative current drawn from output 12Vout at 5A Resistive Load dB 120 Hz; Figures 33 - 34 160 160 200 mV mV µs 50% to 75% to 50% Iout max; Figure 21 50% to 75% to 50% Iout max; Figure 22 To within 1% Vout nom ms ms % Full load, Vout=90% nom.; Figures 19 & 20 -40°C to +125°C; Figure F 4,800 µF load capacitance, Iout = 0A % % 48Vin, 50% combined Vout; Figures 1 - 6 48Vin, 50% combined Vout; Figures 1 - 6 °C °C °C Package rated to 150°C UL rated max operating temp 130°C See Figures 11 - 18 for derating curves 4 200 5 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature Board Temperature Transformer Temperature Isolation Voltage (dielectric strength) Isolation Resistance Isolation Capacitance2 mV mV A A A V A mA µF 100% Load, 35 Vin 55 8 240 91.5 91.5 ISOLATION CHARACTERISTICS V V V V Continuous Continuous 100ms transient, square wave Basic insulation, Pollution Degree 2 125 125 110 2000 30 470 V MΩ pF Note 1: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]). Note 2: Higher values of isolation capacitance can be added external to the module. Product # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 3 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick ELECTRICAL CHARACTERISTICS (Continued) Parameter P FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control (Option P) Off-State Voltage On-State Voltage ON/OFF Control (Option N) Off-State Voltage On-State Voltage ON/OFF Control (Either Option) Pull-Up Voltage Pull-Up Resistance Output Voltage Trim Range Output Over-Voltage Protection (-12V) Output Over-Voltage Protection (+12V) Over-Temperature Shutdown Over-Temperature Shutdown Restart Hysteresis Min. Typ. Max. Units 185 200 215 kHz -2 2.4 0.8 18 V V 2.4 -2 18 0.8 V V 9.2 V kΩ % V V °C °C -10 -13.7 13.7 117 Vin/6 40 -14.5 14.5 122 10 RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) Calculated MTBF (MIL-217) Field Demonstrated MTBF +10 -15 15 127 Notes & Conditions Regulation stage and Isolation stage Figures A & B Trim-up pins 6-5, Trim-down pins 6-4 Over full temp range Over full temp range Average PCB Temperature 106 Hrs. TR-NWT-000332; 80% load,300LFM, 40oC Ta 106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40oC Ta 106 Hrs. See website for details 2.05 2.5 STANDARDS COMPLIANCE Parameter P Notes STANDARDS COMPLIANCE UL/cUL 60950-1 EN60950-1 72/23/EEC 93/68/EEC Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 GR-1089-CORE Telcordia (Bellcore) GR-513 File # E194341, Basic insulation & pollution degree 2 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 • 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 Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability # Units 32 5 5 10 5 5 5 15 pins Test Conditions 95% rated Vin and load, units at derating point, 1000 hours 10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis 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, 2 minutes on and 6 hours off 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 the factory for official product family qualification documents. OPTIONS PATENTS SynQor provides various options for Logic Sense, 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. 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 # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 4 Input: Outputs: Power: Package: Technical Specification 100 6 95 Power Dissipation (W) 5 Efficiency (%) 90 85 80 75 70 35 Vin 4 3 2 35 Vin 1 48 Vin 48 Vin 65 75 Vin 0 12 24 36 75 Vin 0 60 48 0 60 12 24 Figure 1: Efficiency vs. output power, from 0 load to full load with 50% load on -12V output and 50% load on +12V output at minimum, nominal, and maximum input voltage at 25°C. 60 6 95 Power Dissipation (W) 5 90 Efficiency (%) 48 Figure 2: Power dissipation vs. output power, from 0 load to full load with 50% load on -12V output and 50% load on +12V output at minimum, nominal, and maximum input voltage at 25°C. 100 85 80 75 70 35 Vin 4 3 2 35 Vin 1 48 Vin 48 Vin 65 75 Vin 75 Vin 0 60 34.5/1.2 36 Total Output Power (W) Total Output Power (W) 27.5/8.5 19.2/16.9 10.9/25.2 34.5/1.2 2.4/33.5 27.5/8.5 19.2/16.9 10.9/25.2 2.4/33.5 Output Power (W), -12Vout/+12Vout Output Power (W), -12Vout/+12Vout Figure 3: Efficiency vs. output power, with total output power fixed at 60% load (36W) and loads split as shown between -12V and +12V outputs at minimum, nominal, and maximum input voltage at 25°C. Figure 4: Power dissipation vs. output power, with total output power fixed at 60% load (36W) and loads split as shown between -12V and +12V outputs at minimum, nominal, and max input voltage at 25°C. 93 7.0 Power Dissipation (W) 92 Efficiency (%) 35-75V +12V & -12V 60W Quarter-brick 91 90 89 25 C 40 C 55 C 88 87 0 100 200 300 400 4.0 25 C 40 C 55 C 3.0 0 100 200 300 400 500 Air Flow (LFM) Figure 5: Efficiency vs. load current, with 80% load and 50/50 voltage split (2A load on -12V and 2A load on +12V) over variations in temperature and airflow. Phone 1-888-567-9596 5.0 2.0 500 Air Flow (LFM) Product # DQ61212QMA06 6.0 Figure 6: Power dissipation vs. load current, with 80% load and 50/50 voltage split (2A load on -12V and 2A load on +12V) over variations in temperature and airflow. www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 5 Input: Outputs: Power: Package: Technical Specification 12.20 Input voltage has virtually no effect on cross regulation 12.15 12.10 12.05 12.05 12.00 12.00 11.95 11.95 11.90 11.90 11.85 11.85 11.80 11.80 -12V_48Vin +12V_48Vin 11.70 60/0 48/12 36/24 11.70 24/36 12/48 12.10 12.10 12.05 12.05 12.00 12.00 11.95 11.95 11.90 11.90 11.85 11.75 11.80 0/60 11.85 -12V_48Vin +12V_48Vin 42/3 35/10 25/20 POUT1 / POUT2 (W) 11.80 20/25 10/35 3/42 POUT1 / POUT2 (W) Figure 7: Load regulation vs. load current with power fixed at full load (60W) and load currents split as shown between -12V and +12V outputs, at nominal input voltage. 12.20 Figure 8: Load regulation vs. load current with power fixed at 75% load (45W) and load currents split as shown between -12V and +12V outputs, at nominal input voltage. 12.20 12.20 Input voltage has virtually no effect on cross regulation 12.20 Input voltage has virtually no effect on cross regulation 12.10 12.10 12.10 12.10 12.05 12.05 12.05 12.05 12.00 12.00 12.00 12.00 11.95 11.95 11.95 11.95 11.90 11.90 11.90 11.85 11.85 11.80 11.80 11.90 -12V_48Vin +12V_48Vin 11.85 11.80 12.0 24.0 36.0 48.0 VOUT1 (-V) 12.15 VOUT2 (V) 12.15 12.15 VOUT1 (-V) 12.15 -12V_48Vin +12V_48Vin 11.85 11.80 12 60.0 12.15 VOUT2 (V) 11.75 12.20 Input voltage has virtually no effect on cross regulation 12.15 VOUT1 (-V) 12.10 VOUT2 (V) VOUT1 (-V) 12.15 12.20 VOUT2 (V) 12.20 35-75V +12V & -12V 60W Quarter-brick 24 36 48 60 Total Output Power (W) Total Output Power (W) Figure 9: Load regulation vs. output power from 12W load to full load with 75% load on -12V output and 25% load on +12V output at nominal input voltage. Figure 10: . Load regulation vs. output power from 12W load to full load with 25% load on -12V output and 75% load on +12V output at nominal input voltage. 5.0 4.5 4.0 Iout (A) 3.5 3.0 2.5 2.0 400 LFM (2.0 m/s) 1.5 300 LFM (1.5 m/s) 1.0 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 0.5 0 LFM (0 m/s) 0.0 0 25 40 55 70 Semiconductor junction temperature is within 1°C of surface temperature 85 o Ambient Air Temperature ( C) Figure 11: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 to 400 LFM, air flowing from pin 1 to pin 3. Full load (5A) on -12V output and no load on +12V output. Product # DQ61212QMA06 Phone 1-888-567-9596 Figure 12: Thermal plot of converter at 5 amp load on -12V output and no load on +12V output with 55°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal input voltage) www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 6 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick 5.0 4.5 4.0 Iout (A) 3.5 3.0 2.5 2.0 400 LFM (2.0 m/s) 1.5 300 LFM (1.5 m/s) 1.0 200 LFM (1.0 m/s) 0.5 100 LFM (0.5 m/s) 0 LFM (0 m/s) 0.0 0 25 40 55 70 Semiconductor junction temperature is within 1°C of surface temperature 85 Ambient Air Temperature (oC) Figure 13: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 to 400 LFM, air flowing from pin 1 to pin 3. Full load (5A) on +12V output and no load on -12V output. Figure 14: Thermal plot of converter at 5 amp load on +12V output and no load on -12V output with 55°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal Vin) 2.5 Iout (A) 2.0 1.5 1.0 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 0.5 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 0 LFM (0 m/s) 0.0 0 25 40 55 70 Semiconductor junction temperature is within 1°C of surface temperature 85 o Ambient Air Temperature ( C) Figure 15: Max output power derating curves vs. air temp for 0 to 400 LFM, pin 1 to pin 3. 50% load (2.5A) on -12V output and 50% load (2.5A) on +12V output. At derating points, +12V output decreases while -12V output remains unchanged. Figure 16: Thermal plot of converter at 2.5 amp load on -12V output and 2.5 amp load on +12V output with 55°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal Vin) 3.5 3.0 Iout (A) 2.5 2.0 1.5 400 LFM (2.0 m/s) 1.0 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 0.5 100 LFM (0.5 m/s) 0 LFM (0 m/s) 0.0 0 25 40 55 70 Semiconductor junction temperature is within 1°C of surface temperature 85 Ambient Air Temperature (oC) Figure 17: Max output power derating curves vs. air temp for 0 to 400 LFM, pin 1 to pin 3. 30% load (1.5A) on -12V output and 70% load (3.5A) on +12V output. At derating points, +12V output decreases while -12V output remains unchanged. Product # DQ61212QMA06 Phone 1-888-567-9596 Figure 18: Thermal plot of converter at 3.5 amp load on +12V output and 1.5 amp load on -12V output with 55°C air flowing at 200 LFM. Air flow across the converter is from pin 1 to pin 3 (nominal Vin). www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 7 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick +12Vout +12Vout -12Vout -12Vout Figure 19: Turn-on transient at full rated load current (resistive load) (10 ms/div). Input voltage pre-applied. Ch 1: -12Vout (5V/div); Ch 2: +12Vout (5V/div); Ch 3:ON/OFF input (5V/div). Figure 20: Turn-on transient at zero load current (10 ms/div). Ch 1: 12Vout (5V/div); Ch 2: +12Vout (5V/div); Ch 3: ON/OFF input (5V/div). +12Vout +12Vout +12Iout +12Iout -12Vout -12Vout -12Iout -12Iout Figure 21: Output voltage response to step-change in Iout1 (50%-75%-50% of Imax; dI/dt = 0.1A/µs). Load cap: 15µF, 300 mΩ ESR tantalum cap & 1µF ceramic cap. Vout (500mV/div), Iout (5A/div). Ch1: Vout1; Ch2 Iout1; Ch 3: Vout2; Ch 4 Iout2 Figure 22: Output voltage response to step-change in Iout2 (50%-75%-50% of Imax; dI/dt = 0.1A/µs). Load cap: 15µF, 300 mΩ ESR tantalum cap & 1µF ceramic cap.. Vout (500mV/div), Iout (5A/div). Ch1: Vout1; Ch2 Iout2; Ch 3: Vout2; Ch 4 Iout2 See Fig. 25 10 µH source impedance See Fig. 24 iS VSOURCE See Fig. 26 VOUT2+ iC 47 µF, <1Ω ESR electrolytic capacitor DC/DC Converter VOUT1+ 1 µF ceramic capacitors 15 µF, 300mΩ ESR tantalum capacitors COM (-) Figure 23: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 24), Input Reflected Ripple Current (Figure 25) and Output Voltage Ripple (Figure 26). Product # DQ61212QMA06 Phone 1-888-567-9596 Figure 24: Input Terminal Ripple Current, -12V & +12V outputs at 50% rated output current and nominal input voltage with 10µ H source impedance and 100µ F electrolytic capacitor (200 mA/div). (see Fig. 23) www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 8 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick +12Vout -12Vout Figure 25: Input reflected ripple current, is, through a 10 µ H source inductor at nominal input voltage and rated load current (5 mA/div). -12V and +12V outputs at 50% rated load current. (see Fig. 23) Figure 26: Output voltage ripple at nominal input voltage and 50% rated load current on both outputs (10 mV/div). Load capacitance: 1µ F ceramic cap & 15µ F tantalum cap. Bandwidth: 20 MHz. (see Fig. 23) 15.0 15.0 14.0 14.0 13.0 Output Voltage (+V) Output Voltage (-V) 13.0 12.0 11.0 10.0 9.0 8.0 35 V 7.0 6.0 11.0 10.0 9.0 8.0 48 V 7.0 75 V 6.0 5.0 0.0 12.0 1.0 2.0 3.0 4.0 5.0 6.0 35 V 48 V 75 V 5.0 7.0 0.0 Load Current (A) 1.0 2.0 3.0 4.0 5.0 6.0 7.0 Load Current (A) Figure 27: Output voltage vs. load current showing typical current limit curves and converter shutdown points for the -12V output. +12V load is at 0A. Figure 28: Output voltage vs. load current showing typical current limit curves and converter shutdown points for the +12V output. -12V load is at 0A. Figure 29: Load current for -12V output (2A/div) as a function of time when the converter attempts to turn on into a 10 mΩ short circuit. Top trace is an expansion of the on-time portion of the bottom trace. Figure 30: Load current for +12V output (2A/div) as a function of time when the converter attempts to turn on into a 10 mΩ short circuit. Top trace is an expansion of the on-time portion of the bottom trace. Product # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 9 Input: Outputs: Power: Package: Technical Specification 1 0.1 36 Vin 48 Vin 75 Vin 0.01 Output Impedance ( ) Output Impedance ( ) 1 0.001 0.1 36 Vin 48 Vin 75 Vin 0.01 0.001 10 100 1,000 10,000 100,000 10 100 Hz 10,000 100,000 Figure 32: Output impedance (Zout2 = Vout2/Iout2) for minimum, nominal, and maximum input voltage at full rated power, for +12V output. 0 0 -10 -10 -20 -20 -30 -40 -50 36 Vin -60 48 Vin 75 Vin -70 -80 -90 Forward Transmission (dB) Forward Transmission (dB) 1,000 Hz Figure 31: Output impedance (Zout1 = Vout1/Iout1) for minimum, nominal, and maximum input voltage at full rated power, for -12V output. -100 -30 -40 -50 36 Vin -60 48 Vin 75 Vin -70 -80 -90 -100 -110 -110 10 100 1,000 10,000 100,000 10 100 Hz 1,000 10,000 100,000 Hz Figure 33: Forward Transmission (FT1 = Vout1/Vin) for minimum, nominal, and maximum input voltage at full rated power, for -12V output. Figure 34: Forward Transmission (FT2 = Vout2/Vin) for minimum, nominal, and maximum input voltage at full rated power, for +12V output. 10 10 0 0 -10 -20 36 Vin 48 Vin -30 75 Vin -40 Reverse Transmission (dB) Reverse Transmission (dB) 35-75V +12V & -12V 60W Quarter-brick -50 -10 -20 36 Vin 48 Vin -30 75 Vin -40 -50 -60 -60 10 100 1,000 10,000 100,000 10 Hz Phone 1-888-567-9596 1,000 10,000 100,000 Hz Figure 35: Reverse Transmission (RT1 = Iin/Iout1) for minimum, nominal, and maximum input voltage at full rated power, for -12V output. Product # DQ61212QMA06 100 Figure 36: Reverse Transmission (RT2 = Iin/Iout2) for minimum, nominal, and maximum input voltage at full rated power, for +12V output. www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 10 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick Input Impedance ( ) 100 10 36 Vin 48 Vin 75 Vin 1 0.1 10 100 1,000 10,000 100,000 Hz Figure 37: Input impedance (Zin = Vin/Iin) for minimum, nominal, and maximum input voltage at full rated power. Product # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 11 Input: Outputs: Power: Package: Technical Specification BASIC OPERATION AND FEATURES The DualQor series converter uses a two-stage power conversion topology in which the two output voltages are cross regulated. The first stage is a buck-converter that keeps the output voltage constant over variations in line, load, and temperature. The second stage uses a transformer to provide the functions of input/output isolation and voltage step-down to achieve the low output voltage required. The two-stage solution is ideal for converters with multiple crossregulated output voltages. The first-stage compensates for any variations in line voltage. Therefore, the dependence of the output voltage on line variations is minimized. Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformer’s output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate far less energy than Schottky diodes. This is the primary reason that the DualQor series of converters has such high efficiency, even at very low output voltages and very high output currents. Dissipation throughout the converter is so low that it does not require a heatsink for operation. However, baseplated versions are available for optional heatsinking in severe thermal environments. The DualQor series converter uses the industry standard footprint and pin-out configuration. ON/OFF ON/OFF ON/OFF Vin(_) Vin(_) Vin(_) Remote Enable Circuit Negative Logic (Permanently Enabled) ON/OFF 35-75V +12V & -12V 60W Quarter-brick The DualQor has many standard control and protection features. All shutdown features are non-latching, meaning that the converter shuts off for 200 ms before restarting (see Figure F). CONTROL FEATURES REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). There are two versions of the converter that differ by the sense of the logic used for the ON/OFF input. In the positive logic version, the ON/OFF input is active high (meaning that a high turns the converter on). In the negative logic version, the ON/OFF signal is active low (meaning that a low turns the converter on). Figure A details five possible circuits for driving the ON/OFF pin. Figure B is a detailed look of the internal ON/OFF circuitry. OUTPUT VOLTAGE TRIM (Pin 6): The TRIM input permits the user to adjust the output voltage up or down according to the trim range specifications. It is important to recognize that adjusting one output will also adjust the second output proportionally. To lower the output voltage, the user should connect a resistor between Pin 6 and Pin 7. To raise the output voltage, the user should connect a resistor between Pin 6 and Pin 5. The following table shows the resistor values needed to trim the output voltVo(%) 1 2 3 4 5 6 7 8 9 10 R up 397 178 105 68.4 46.5 31.9 21.5 13.65 7.57 0 R down 466 208 121.5 78.4 52.7 35.4 23.1 13.87 6.7 0 Positive Logic (Permanently Enabled) 5V Vin(+) 5V 274k ON/OFF 50k TTL TTL/ CMOS ON/OFF Vin(_) Vin(_) Open Collector Enable Circuit Vin(_) Direct Logic Drive Figure A: Various circuits for driving the ON/OFF pin. Product # DQ61212QMA06 100pF 50k Phone 1-888-567-9596 www.synqor.com Figure B: Internal ON/OFF pin circuitry Doc.# 005-2DQ612E Rev. C 01/11/06 Page 12 Input: Outputs: Power: Package: Technical Specification age up or down. Resistor values in Kohms for the desired increase/decrease (typical) in output voltage (%) Note: The TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the 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 full 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. 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” on our web. 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. Output Current Limit: The maximum current limit remains constant as the output voltage drops. However, once the impedance of the short across the output is small enough to make the output voltage drop below the specified Output DC Current-Limit Shutdown Voltage, the converter turns off. The converter then enters a “hiccup mode” where it repeatedly turns on and off at a 5 Hz (nominal) frequency with a 5% duty cycle until the short circuit condition is removed. This prevents excessive heating of the converter or the load board. Output Over-Voltage Limit: If the voltage across the output pins exceeds the Output Over-Voltage Protection threshold, the converter will immediately stop switching. This prevents damage to the load circuit due to 1) excessive series resistance in output current path from converter output pins to sense point, 2) a release of a short-circuit condition, or 3) a release of a current limit condition. Load capacitance determines exactly how high the output voltage will rise in response to these conditions. After 200 ms the converter will automatically restart. 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 OverTemperature 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. APPLICATION CONSIDERATIONS Input System Instability: This condition can occur because any DC/DC converter appears incrementally as a negative resistance load. A detailed application note titled “Input System Instability” is available on the SynQor website which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. Application Circuits: Figure D below provides a typical circuit diagram which details the input filtering and voltage trimming. Vin(+ ) External Input Filter Vin Electrolytic Capacitor 47µF -12 Vout(-) Trim OP RTN ON/OFF Rtrim-up Iload Cload or Rtrim-down Vin(_) 35-75V +12V & -12V 60W Quarter-brick Cload +12 Vout(+ ) Iload Figure D: Typical application circuit (negative logic unit, permanently enabled). Product # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 13 Input: Outputs: Power: Package: Technical Specification Input Filtering and External Capacitance: Figure E provides a diagram showing the internal input filter components. This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended external input capacitance is specified in the “Input Characteristics” section. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. 35-75V +12V & -12V 60W Quarter-brick L Vin(+) C Vin(_) Figure E: Internal Input Filter Diagram (values listed on page 3). Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for at least 200ms when it is shut down for any reason. When an output short is present, this generates a 5Hz "hiccup mode," which prevents the converter from overheating. In all, there are seven ways that the converter can be shut down, initiating a Startup Inhibit Period: • Input Under-Voltage Lockout • Input Over-Voltage Shutdown (not present in Quarter-brick) Before time t0, when the input voltage is below the UVL threshold, the unit is disabled by the Input Under-Voltage Lockout feature. When the input voltage rises above the UVL threshold, the Input Under-Voltage Lockout is released, and a Startup Inhibit Period is initiated. At the end of this delay, the ON/OFF pin is evaluated, and since it is active, the unit turns on. At time t1, the unit is disabled by the ON/OFF pin, and it cannot be enabled again until the Startup Inhibit Period has elapsed. • Output Over-Voltage Protection • Over Temperature Shutdown When the ON/OFF pin goes high after t2, the Startup Inhibit Period has elapsed, and the output turns on within the typical Turn-On Time. • Current Limit • Short Circuit Protection • Turned off by the ON/OFF input Figure F shows three turn-on scenarios, where a Startup Inhibit Period is initiated at t0, t1, and t2: Vin Under-Voltage Lockout Turn-On Threshold ON/OFF (pos logic) ON OFF ON OFF ON 4ms (typical Vout turn on time) 200ms (typical start-up inhibit period) t1 t0 200ms 200ms t2 t Figure F: Startup Inhibit Period (turn-on time not to scale) Product # DQ61212QMA06 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 14 Input: Outputs: Power: Package: Technical Specification 35-75V +12V & -12V 60W Quarter-brick PART NUMBERING SYSTEM ORDERING INFORMATION The part numbering system for SynQor’s DualQor DC/DC converters follows the format shown in the example below. The tables below show the valid model numbers and ordering options for converters in this product family. When ordering SynQor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional 3 characters for options. DQ 6 12 12 Q M A 06 N K S Options (see Ordering Information) Output Power Thermal Design/Profile Performance Level Package Size Output Voltage 2 Model Number Input Voltage DQ63318QMA04xyz DQ63325QMA04xyz DQ65033QMA06xyz DQ61212QMA06xyz 35 - 75 V 35 - 75 V 35 - 75 V 35 - 75 V Output Max Output Voltages Power 3.3/1.8 V 40 W 3.3/2.5 V 40 W 5.0/3.3 V 60 W +12/-12 V 60 W The following option choices must be included in place of the x y z spaces in the model numbers listed above. Output Voltage 1 Input Voltage Product Family Options Description: x y z The first 12 characters comprise the base part number and the last 3 characters indicate available options. Although there are no default values for enable logic and pin length, the most common options are negative logic and 0.145” pins. These part numbers are more likely to be readily available in stock for evaluation and prototype quantities. Application Notes A variety of application notes and technical white papers can be downloaded in pdf format at www.synqor.com. Enable Logic Pin Length K - 0.110" P - Positive N - 0.145" N - Negative R - 0.180" Y - 0.250" Feature Set S - Standard RoHS Compliance: The EU led RoHS (Restriction of Hazardous Substances) Directive bans the use of Lead, Cadmium, Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. SynQor products are currently 5/6 RoHS compliant with lead being the exception. For more information please visit our RoHS Compliance / Lead Free Initiative web page or e-mail us at [email protected]. Contact SynQor for further information: Phone: Toll Free: Fax: E-mail: Web: Address: Product # DQ61212QMA06 978-849-0600 888-567-9596 978-849-0602 [email protected] www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 Warranty SynQor offers a three (3) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. Information furnished by SynQor is believed to be accurate and reliable. However, no responsibility is assumed by SynQor 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 SynQor. www.synqor.com Doc.# 005-2DQ612E Rev. C 01/11/06 Page 15