IQ32050HPC32NRS

I REL P 9-75 V 100 V 1.8-48 V Outputs M ARY IN Technical Specification IQ32-HPC Family 2250 V dc Isolation 165 W Max Power Half-brick DC-DC Converter Continuous Input Transient Input The InQor® Half-brick converter series is composed of next-generation, board-mountable, isolated, fixed switching frequency dc-dc converters that use synchronous rectification to achieve extremely high power conversion efficiency. Each module is supplied completely encased to provide protection from the harsh environments seen in many industrial and transportation applications. Operational Features • High efficiencies, up to 88% at full rated load current • Delivers full power with minimal derating - no heatsink required • Operating input voltage range: 9 - 75 V, 100 V transient for 100 ms • Fixed frequency switching provides predictable EMI • No minimum load requirement Mechanical Features • Industry standard Half-brick pin-out configuration • Standard size: 2.390" x 2.490" x 0.512" (60.6 x 63.1 x 13.0 mm) • Total weight: 5 oz (142 g) Protection Features • Input under-voltage lockout • Input over-voltage shutdown • Output current limit and short circuit protection • Active back bias limit • Output over-voltage protection • Thermal shutdown Control Features • On/Off control referenced to input side • Remote sense for the output voltage • Output voltage trim range of -20%, +10% COnTenTS Mechanical Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 IQ32-HPC Family Electrical Characteristics . . . . . . . . . . . . . . . . . . . . 3 - 4 IQ32-HPC Family Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 IQ32018HPC55 (1.8 V, 55 A) Available in the Future . . . . . . . . . . . . . . . . IQ32033HPC45 (3.3 V, 45 A) Available in the Future . . . . . . . . . . . . . . . . IQ32050HPC32 (5.0 V, 32 A) Available in the Future . . . . . . . . . . . . . . . . IQ32120HPC13 (12 V, 13 A) Available in the Future . . . . . . . . . . . . . . . . . IQ32150HPC11 (15 V, 11 A) Available in the Future . . . . . . . . . . . . . . . . . IQ32240HPC6H (24 V, 6.7 A) Available in the Future . . . . . . . . . . . . . . . . IQ32280HPC5I (28 V, 5.8 A) Available in the Future . . . . . . . . . . . . . . . . . IQ32400HPC04 (40 V, 4.0 A) Available in the Future . . . . . . . . . . . . . . . . IQ32480HPC3E (48 V, 3.4 A) Characteristics and Figures . . . . . . . . . .6 - 7 Application Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 11 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Doc.# 005-005H332 Rev. 1 08/13/08 Page No. Safety Features • 2250 V, 30 MW input-to-output isolation • 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 standard • RoHS compliant (see last page) Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Page 1 I REL P MECHANICAL DIAGRAM M ARY IN Technical Specification IQ32-HPC Family NOTES PIN DESIGNATIONS Pin N o. 1 2 3 4 5 6 7 8 Notes: 1. SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2. Leave TRIM pin open for nominal output voltage. 3. SENSE(+) should be connected to Vout(+) either remotely or at the converter. 1) Pins 1-3, 5-7 are 0.040" (1.02 mm) diameter with 0.080" (2.03 mm) diameter standoff shoulders. 2) Pins 4 and 8 are 0.080” (2.03 mm) diameter with 0.125” (3.18 mm) diameter standoff shoulders. 3) Recommended pin length is 0.03" (0.76 mm) greater than the PCB thickness. 4) All Pins: Material - Copper Alloy; Finish - Matte Tin over Nickel plate 5) Undimensioned components shown are for visual reference only. 6) Weight: 5 oz. (142 g) typical 7) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5 mm) x.xxx +/-0.010 in. (x.xx +/-0.25 mm) 8) Workmanship: Meets or exceeds current IPC-A-610 Class II 9) Applied torque per screw should not exceed 6in-lb. (0.7 Nm). 10) Baseplate flatness tolerance is 0.004" (.10 mm) TIR for surface. Name Vin (+) ON/OFF Vin (-) Vout (-) SENSE (-) TRIM SENSE (+) Vout (+) Function Positive input voltage TTL input to turn converter on and off, referenced to V in (-) with internal pull up Negative input voltage Negative output voltage Negative remote sense 1 Output voltage trim 2 Positive remote sense 3 Positive output voltage Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 2 I REL P M ARY IN Technical Specification IQ32-HPC Family IQ32 FAMILY eLeCTRICAL CHARACTeRISTICS (all output voltages) Ta = 25 °C, airflow rate = 300 LFM, Vin = 32 V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units notes & Conditions V V V V dc V dc V dc °C °C V V Continuous Continuous 100 ms ABSOLUTe MAXIMUM RATInGS Input Voltage Non-Operating 100 Operating 75 Operating Transient Protection 100 Isolation Voltage Input to Output 2250 Input to Base-Plate 2250 Output to Base-Plate 2250 Operating Temperature -40 100 Storage Temperature -55 125 Voltage at ON/OFF input pin -2 18 InPUT CHARACTeRISTICS Operating Input Voltage Range 9 32 75 Input Under-Voltage Lockout Turn-On Voltage Threshold 11.0 11.2 11.5 Turn-Off Voltage Threshold 8.1 8.4 8.7 Lockout Voltage Hysteresis 2.8 Input Over-Voltage Shutdown Recommended External Input Capacitance 470 Input Filter Component Values (L\C) 0.34\13.2 DYnAMIC CHARACTeRISTICS Turn-On Transient Turn-On Time 10 Start-Up Inhibit Time 200 230 250 Output Voltage Overshoot 0 ISOLATIOn CHARACTeRISTICS Isolation Voltage (dielectric strength) Isolation Resistance 30 Isolation Capacitance (input to output) 1000 TeMPeRATURe LIMITS FOR POWeR DeRATInG CURVeS Semiconductor Junction Temperature 125 Board Temperature 125 Transformer Temperature 125 Maximum Baseplate Temperature, Tb 100 FeATURe CHARACTeRISTICS Switching Frequency 255 275 295 ON/OFF Control Off-State Voltage 2.4 18 On-State Voltage -2 0.8 ON/OFF Control Pull-Up Voltage 5 Pull-Up Resistance 50 Over-Temperature Shutdown OTP Trip Point 125 Over-Temperature Shutdown Restart Hysteresis 10 ReLIABILITY CHARACTeRISTICS Calculated MTBF (Telcordia) TR-NWT-000332 TBD Calculated MTBF (MIL-217) MIL-HDBK-217F TBD Field Demonstrated MTBF Note 1: Start-up guaranteed above 11.5 V, but will operate down to 9V Note 2: Higher values of isolation capacitance can be added external to the module. Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Baseplate temperature 100 V, 100 ms Transient; See Note 1 V V V V Not Available µF Typical ESR 0.1-0.2 Ω µH\µF Internal values; see Figure E ms ms % Full load, Vout=90% nom. -40 °C to +125 °C; Figure F Maximum Output Capacitance See Absolute Maximum Ratings MΩ pF °C °C °C °C kHz V See Note 2 Package rated to 150 °C UL rated max operating temp 130 °C Isolation stage switching freq. is half this Application notes Figures A & B V kΩ °C °C Average PCB Temperature 106 Hrs. 80% load, 200LFM, 40 °C Ta 106 Hrs. 80% load, 200LFM, 40 °C Ta 106 Hrs. See our website for details Doc.# 005-005H332 Rev. 1 08/13/08 Page 3 I REL P STANDARDS COMPLIANCE STANDARDS COMPLIANCE UL/cUL 60950-1 EN60950-1 Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 M ARY IN Technical Specification IQ32-HPC Family Parameter Notes & Conditions File # E194341, Basic insulation Certified by TUV Test on entire assembly; board & plastic components UL94V-0 compliant ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance) Note: 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 QUALIFICATION TESTING Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability Parameter # Units 32 5 5 10 5 5 5 15 pins Test Conditions 95% rated Vin and load, units at derating point, 1000 hours 10-55 Hz 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, continuous Vin applied except 5 min/day MIL-STD-883, method 2003 Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 4 I REL P M ARY IN Technical Specification IQ32-HPC Family IQ32 FAMILY FIGUReS (all output voltages) 120 Nominal Vout Typical Current Limit Inception Point 100 Output Voltage (%) 80 Typical Output Voltage at Shutdown 60 40 Vin min 20 Vin nom Vin max 0 5.00 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Load Current (% ) Common Figure 1: Typical startup waveform. Input voltage pre-applied, ON/OFF Pin on Ch 2. Common Figure 2: Output voltage vs. load current showing typical current limit curves and converter shutdown points. 1,000,000 100,000 Trim Resistance (kOhms) 10,000 Trim Resistance (kOhms) 0 1 2 3 4 5 6 7 8 9 10 100,000 1,000 10,000 100 1,000 10 100 0 1 2 3 4 5 6 7 8 9 10 1.8 V 3.3 V 5V 12 V 15 V 24 V 28 V 40V 48 V Common Figure 3: Trim graph for trim-up 1.8 to 12 V outputs. 10,000.0 % Decrease in Vout (All voltages) Common Figure 4: Trim graph for trim-up 15 to 48 V outputs. Trim Resistance (kOhms) 1,000.0 100.0 10.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 % Decrease in Vout (All voltages) Common Figure 5: Trim graph for trim down. Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 5 Technical Specification P M ELI R I ARY N Input: Output: Current: Part no.: 9 - 75 V 48 V 3.7 A IQ32480HPC3H IQ32480HPC3e eLeCTRICAL CHARACTeRISTICS (48.0 Vout) Ta = 25 °C, airflow rate = 300 LFM, Vin = 32 V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter InPUT CHARACTeRISTICS Maximum Input Current No-Load Input Current Disabled Input Current Response to Input Transient Input Terminal Ripple Current Recommended Input Fuse OUTPUT CHARACTeRISTICS Output Voltage Set Point Output Voltage Regulation Over Line Over Load Over Temperature Total Output Voltage Range Output Voltage Ripple and Noise Peak-to-Peak RMS Operating Output Current Range Output DC Current-Limit Inception Output DC Current-Limit Shutdown Voltage Back-Drive Current Limit while Enabled Back-Drive Current Limit while Disabled Maximum Output Capacitance Output Voltage during Load Current Transient Step Change in Output Current (0.1 A/µs) Settling Time Output Voltage Trim Range Output Voltage Remote Sense Range Output Over-Voltage Protection eFFICIenCY 100% Load 50% Load Min. Typ. 180 1 3.9 900 Max. 23 230 2 Units notes & Conditions A mA mA V mA A V % % mV V mV mV A A V A mA µF mV µs % % V % % 10 Vin; nominal output; in current limit 25 47.52 48 ±0.1 ±0.1 -720 46.80 0 0 3.74 80 17 4.08 31 0.1 5 48.48 ±0.3 ±0.3 720 49.20 160 30 3.4 4.42 1000 V/ms, 32 V to 100 V step; see Figure 6 RMS Fast acting external fuse recommended Over sample, line, load, temperature & life 20 MHz bandwidth; see Note 1 Full load Full load Subject to thermal derating Output voltage 10% Low Negative current drawn from output Negative current drawn from output Vout nominal at full load (resistive load) 50% to 75% to 50% Iout max To within 1% Vout nom Across Pins 8&4; Common Figures 3-5; see Note 2 Across Pins 8&4 Over full temp range See Figure 1 for efficiency curve See Figure 1 for efficiency curve 100 2200 80 -20 56.2 58.6 87 88 10 10 61.0 Note 1: Output is terminated with 1 µF ceramic capacitor. For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com) Note 2: Trim-up range is limited below 10% at low line and full load. Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 6 Technical Specification 100 95 P M ELI R I ARY N Input: Output: Current: Part no.: 9 - 75 V 48 V 3.7 A IQ32480HPC3H 35 30 Power Dissipation (W) 9 Vin 32 Vin 75 Vin 90 25 20 15 10 5 0 9 Vin 32 Vin 75 Vin Efficiency (%) 85 80 75 70 65 60 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Load Current (A) Load Current (A) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 4.0 3.5 3.0 2.5 4.0 3.5 3.0 2.5 Iout (A) 2.0 1.5 1.0 0.5 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) Iout (A) 2.0 1.5 1.0 0.5 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) Ambient Air Temperature (°C) Ambient Air Temperature (°C) Figure 3: Encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage). Figure 5: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1 A/µs). Load cap: 1 µF ceramic capacitor. Ch 1: Vout (2 V/div), Ch 2: Iout (1 A/div). Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Figure 6: Output voltage response to step-change in input voltage (500 V/ms). Load cap: 100 µF, electrolytic output capacitance. Ch 1: Vout (2 V/div), Ch 2: Vin (10 V/div). Doc.# 005-005H332 Rev. 1 08/13/08 Page 7 I REL P BASIC OPERATION AND FEATURES This converter series uses a two-stage power conversion topology. 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-up or step-down to achieve the output voltage required. 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 converter has such high efficiency, even at very low output voltages and very high output currents. These converters are offered totally encased to withstand harsh environments and thermally demanding applications. Dissipation throughout the converter is so low that it does not require a heatsink for operation in many applications; however, adding a heatsink provides improved thermal derating performance in extreme situations. This series of converters use the industry standard footprint and pin-out configuration. M ARY IN Technical Specification IQ32-HPC Family 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(-). The ON/OFF signal is active low (meaning that a low turns the converter on). Figure A details four possible circuits for driving the ON/OFF pin. Figure B is a detailed look of the internal ON/ OFF circuitry. ReMOTe SenSe(+) (Pins 7 and 5): The SENSE(+) inputs correct for voltage drops along the conductors that connect the converter’s output pins to the load. Pin 7 should be connected to Vout(+) and Pin 5 should be connected to Vout(-) at the point on the board where regulation is desired. A remote connection at the load can adjust for a voltage drop only as large as that specified in this datasheet, that is [Vout(+) - Vout(-)] – [Vsense(+) - Vsense(-)] < Sense Range % x Vout Pins 7 and 5 must be connected for proper regulation of the output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher than its specified value. Note: the output over-voltage protection circuit senses the voltage across the output (pins 8 and 4) to determine when it should trigger, not the voltage across the converter’s sense leads (pins 7 and 5). Therefore, the resistive drop on the board should be small enough so that output OVP does not trigger, even during load transients. ON/OFF ON/OFF Vin(_) Remote Enable Circuit Vin(_) Negative Logic (Permanently Enabled) ON/OFF TTL/ CMOS 5V 50k ON/OFF ON/OFF 50k TTL 5V 100pF Vin(_) Open Collector Enable Circuit Vin(_) Direct Logic Drive Vin(_) Figure A: Various circuits for driving the ON/OFF pin. Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Figure B: Internal ON/OFF pin circuitry Doc.# 005-005H332 Rev. 1 08/13/08 Page 8 I REL P OUTPUT VOLTAGe TRIM (Pin 6): The TRIM input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. To decrease the output voltage, the user should connect a resistor between Pin 6 and Pin 5 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be M ARY IN Technical Specification IQ32-HPC Family 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 website. The lockout circuitry is a comparator with dc hysteresis. When the input voltage is rising, it must exceed the typical TurnOn Voltage Threshold value (listed on the specifications 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 load across the output is small enough to make the output voltage drop below the specified Output DC CurrentLimit 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 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. Rtrim-down = where (511)- 10.22 ∆% (kW) ∆% = Vnominal – Vdesired Vnominal x 100% To increase the output voltage, the user should connect a resistor between Pin 6 and Pin 7 (SENSE(+) input). For a desired increase of the nominal output voltage, the value of the resistor should be Rtrim-up = where ( 5.11VOUT x (100+∆%) 1.225∆% _ 511 _ 10.22 ∆% ) (kW) Vout = Nominal Output Voltage Graphs on Page 3 show the relationship between the trim resistor value and Rtrim-up and Rtrim-down, showing the total range the output voltage can be trimmed up or down. 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. It is not necessary for the user to add capacitance at the Trim pin. The node is internally bypassed to eliminate noise. 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. Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 9 I REL P 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 provides a typical circuit diagram which details the input filtering and voltage trimming. 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 on the Electrical Characteristics page. More detailed information is available in the application note titled “EMI Characteristics” on the SynQor website. M ARY IN Technical Specification IQ32-HPC Family Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for approximately 200 ms when it is shut down for any reason. When an output short is present, this generates a 5 Hz “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 • Output Over-Voltage Protection • Over Temperature Shutdown • 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(+) External Input Filter Electrolytic Capacitor Vout(+) Vsense(+) Rtrim-up or Vin ON/OFF Trim Vsense(_) Vin(_) Vout(_) Rtrim-down Cload Iload Figure D: Typical application circuit (negative logic unit, permanently enabled). L Vin(+) C Vin(_) Figure E: Internal Input Filter Diagram (component values listed on the specifications page). Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 10 I REL P 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. 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. Thermal Considerations: The maximum operating baseplate temperature, TB, is 100 ºC. As long as the user’s thermal system keeps TB < 100 ºC, the converter can deliver its full rated power. A power derating curve can be calculated for any heatsink that is attached to the base-plate of the converter. It is only necessary to determine the thermal resistance, RTHBA, of the chosen heatsink between the base-plate and the ambient air for a given airflow rate. This information is usually available from the heatsink vendor. The following formula can the be used to determine the M ARY IN Technical Specification IQ32-HPC Family maximum power the converter can dissipate for a given thermal condition if its base-plate is to be no higher than 100 ºC. 100 ºC - TA max Pdiss = RTHBA This value of power dissipation can then be used in conjunction with the data shown in Figure 2 to determine the maximum load current (and power) that the converter can deliver in the given thermal condition. For convenience, Figures 3 and 4 provide Power derating curves for an encased converter without a heatsink and with a typical 1/4" high heatsink. Vin Under-Voltage Lockout TurnOn Threshold ON/OFF (neg logic) ON OFF ON OFF ON 9ms (typical turn on time) Vout (typical start-up inhibit period) 200ms 200ms 200ms t0 t1 t2 t Figure F: Startup Inhibit Period (turn-on time not to scale) Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 11 I REL P PART nUMBeRInG SYSTeM The part numbering system for SynQor’s InQor dc-dc converters follows the format shown in the example below. IQ 3 2 018 H P C 5 5 n R S - G 6/6 RoHS (see Ordering Information) M ARY IN Technical Specification IQ32-HPC Family ORDeRInG InFORMATIOn 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. A “-G” suffix indicates the product is 6/6 RoHS compliant. Model Number IQ32018HPC55xyz IQ32033HPC45xyz IQ32050HPC32xyz IQ32120HPC13xyz IQ32150HPC11xyz IQ32240HPC6Hxyz IQ32280HPC5Ixyz IQ32400HPC04xyz IQ32480HPC3Exyz Continuous Input Voltage 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V Transient Input Voltage 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms 100 V – 100 ms Output Voltage 1.8 V 3.3 V 5.0 V 12 V 15 V 24 V 28 V 40 V 48 V Maximum Output Current 55 A 45 A 32 A 13 A 11 A 6.7 A 5.8 A 4.0 A 3.4 A Options Output Current Thermal Design (see Ordering Info) Performance Level Package Size Output Voltage Input Voltage Product Family The following options must be included in place of the x y z spaces in the model numbers listed above. Options Description: x y z Enable Logic N - Negative Pin Length R - 0.180" Feature Set S - Standard The first 12 characters comprise the base part number and the last 3 characters indicate available options. The “-G” suffix indicates 6/6 RoHS compliance. Application notes A variety of application notes and technical white papers can be downloaded in pdf format from our website. 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. This SynQor product is 6/6 RoHS compliant. For more information please refer to SynQor’s RoHS addendum available at our RoHS Compliance / Lead Free Initiative web page or e-mail us at rohs@synqor.com. PATenTS SynQor holds the following patents, one or more of which might apply to this product: 5,999,417 6,594,159 6,927,987 7,119,524 6,222,742 6,731,520 7,050,309 7,269,034 6,545,890 6,894,468 7,072,190 7,272,021 6,577,109 6,896,526 7,085,146 7,272,023 Contact SynQor for further information: Phone: Toll Free: Fax: E-mail: Web: Address: 978-849-0600 888-567-9596 978-849-0602 p ower@synqor.com 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. Product # IQ32xxxHPCxx www.synqor.com Doc.# 005-005H332 Rev. 1 08/13/08 Page 12