Technical Specification PQ50090QGB11 48V 9.0V 11A 2000V dc Quarter-brick Input Output Current Isolation DC-DC Converter The PQ50090QGB11 PowerQor Giga converter is an isolated, fixed switching frequency DC/DC converter that uses synchronous rectification and a patented topology to achieve extremely high efficiency and power density. This 9Vout module provides 2,000Vdc isolation and can deliver steady state output current up to 11A. RoHS compliant (see last page). Operational Features • High efficiency, 90% at full rated load current • Delivers up to 11A of output current (99W) PQ50090QGB11 • Input voltage range: 44-52V Protection Features • Fixed frequency switching provides predictable EMI performance • No minimum load requirement means no preload resistors required • Wide output voltage trim range (-10%, +10%), see trim section • Input under-voltage lockout disables converter at low input voltage • Output current limit and short circuit protection protects converter & load from permanent damage and consequent hazardous conditions • Active back bias limit provides smooth startup with external load induced pre-bias Mechanical Features • Industry standard quarter-brick pin-out configuration • Industry standard size: 1.45" x 2.49" x0.512" (36.8 x 63.1x 13.0mm) • Latching output over-voltage protection protects load from damaging voltages • Thermal shutdown protects converter from abnormal environmental conditions • Total height only 0.536" (13.6mm) for baseplated unit • Total weight: 2.1oz (58g) for baseplated unit Control Features • On/Off control referenced to input side (positive and negative logic options are available) • Output voltage trim range of -10%, +10% Safety Features Contents Pending • 2000V, 30MΩ input-to-output isolation input/output ground separation • UL 60950-1:2003, basic insulation • CAN/CSA-C22.2 No. 60950-1:2003 • EN60950-1:2001 • RoHS compliant (see last page) Product # PQ50090QGB11 Phone 1-888-567-9596 Page No. MECHANICAL DIAGRAM (base-plated) . . . . . . . . . . . . . . . . . . . . . . . . . 2 PQ50090QGB11 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . 3 PQ50 Standards and Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 PQ50090QGB11 Datasheet Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 1 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification MECHANICAL DIAGRAM (base-plated) PIN DESIGNATIONS NOTES 1) 2) 3) 4) 5) 6) 7) M3 screws used to bolt unit’s baseplate to other surfaces (such as a heatsink) must not exceed 0.100" (2.54 mm) depth below the surface of the baseplate. Applied torque per screw should not exceed 6in-lb. (0.7 Nm). Baseplate flatness tolerance is 0.004" (.10mm) TIR for surface. Pins 1-3, 5-7 are 0.040” (1.02mm) diameter, with 0.080” (2.03mm) diameter standoff shoulders. Pins 4 and 8 are 0.062” (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. Other Pin extension lengths available All Pins: Material - Copper Alloy - Finish (RoHS 6/6) - Matte Tin over Nickel plate Undimensioned components are shown for visual reference only. Weight: 2.1oz (58g) typical 8) 9) 10) All dimensions in inches (mm) Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm) Product # PQ50090QGB11 Phone 1-888-567-9596 Pin Name 1 Vin(+) 2 ON/OFF 3 Vin(–) Function Positive input voltage TTL input to turn converter on and off, referenced to Vin(–), with internal pull up. Negative input voltage 4 Vout(–) Negative output voltage 5 SENSE(–) Negative remote sense; see note 1 6 TRIM Output voltage trim; see note 2 7 SENSE(+) Positive remote sense; see note 3 8 Vout(+) Positive output voltage Notes: 1) Pin 5 must be connected to Vout(-). 2) Leave Pin 6 open for nominal output voltage. 3) Pin 7 must be connected to Vout(+). www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 2 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification PQ50090QGB11 ELECTRICAL CHARACTERISTICS Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V dc unless otherwise noted; full operating temperature range is -40 °C to +70 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating 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 Response to Input Transient Input Reflected Ripple Current Input Terminal Ripple Current Recommended Input Fuse Recommended External Input Capacitance Input Filter Component Values (L\C) 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 Electrolytic EFFICIENCY 100% Load 50% Load Product # PQ50090QGB11 Typ. -40 -55 -2 Max. Units Notes & Conditions 80 60 V V 2000 70 125 18 V °C °C V 44 48 52 V 31.5 29.0 1.5 33.0 30.5 2.5 34.5 32.0 3.5 2.7 160 4 V V V A mA mA mV mA mA A µF µH\µF 80 2 225 5 145 20 20 47 2.0\6.6 8.91 Phone 1-888-567-9596 0.25V/μs input transient RMS thru 10μH inductor RMS Fast acting external fuse recommended Typical ESR 0.1-0.2Ω; Figure 13 Internal values 9.09 V ±0.05\4.5 ±0.05\4.5 ±35 ±0.2\18 ±0.2\18 ±100 9.23 %\mV %\mV mV V 75 20 11 15.3 mV mV A A V A mA uF Over sample, line, load, temperature & life 20MHz bandwidth; see Note 2 Full load Full load Subject to thermal derating Output Voltage 10% Low See note 3 Negative current drawn from output Negative current drawn from output Nominal Vout at full load (resistive load) % % Figures 1 - 2 Figures 1 - 2 25 5 0.2 0 100% Load, 44V Vin 9.00 8.77 0 11.7 Continuous Continuous 13.5 6.0 0.7 10 1.25 50 1,700 89.5 90.5 www.synqor.com See note 1 See note 1 Doc.# 005-0005485 Rev. A 03/29/10 Page 3 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification PQ50090QGB11 ELECTRICAL CHARACTERISTICS (continued) Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V dc unless otherwise noted; full operating temperature range is -40 °C to +70 °C baseplate temperature with appropriate power derating. Specifications subject to change without notice. Parameter Min. Typ. Max. Units Notes & Conditions DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection 60 dB 120Hz; Figure 16 Output Voltage during Load Current Transient Step Change in Output Current (0.1A/µs) 300 mV 50% to 75% to 50% Iout max, 470 μF load cap Step Change in Output Current (5A/µs) 200 mV Settling time 300 us To within 1% Vout nom Turn-On Transient Turn-On Time 10 ms Full load, Vout=90% nom; Figures 9 & 10 Output Voltage Overshoot 0 % ISOLATION CHARACTERISTICS Isolation Voltage (dielectric strength) 2000 V See Absolute Maximum Ratings Isolation Resistance 30 MΩ Isolation Capacitance (input to output) 470 pF See Note 4 TEMPERATURE LIMITS FOR POWER DERATING CURVES Semiconductor Junction Temperature 125 °C Package rated to 150°C Board Temperature 125 °C UL rated max operating temp 130°C Transformer Temperature 125 °C FEATURE CHARACTERISTICS Switching Frequency Regulation Stage 290 320 350 kHz ON/OFF Control (Option P) Off-State Voltage -2.0 0.8 V On-State Voltage 2.4 18.0 ON/OFF Control (Option N) Off-State Voltage 2.4 18 V On-State Voltage -2.0 0.8 ON/OFF Control (Either Option) Application notes; Figures A & B Pull-Up Voltage Vin/4.25 14.30 V Pull-Up Resistance 40 kΩ Output Voltage Trim Range -10 10 % Measured across Pins 8 & 4; Figure C Output Over-Voltage Protection 117 122 127 % Over Full Temperature Range; % of nominial Vout Over-Temperature Shutdown 125 °C Average PCB Temperature Over-Temperature Shutdown Restart Hysteresis 10 °C RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) 2.50 106 Hrs. TR-NWT-000332; 80% load, 300LFM, 40°C Ta Calculated MTBF (MIL-217) 1.56 106 Hrs. MIL-HDBK-217F; 80% load, 300LFM, 40°C Ta Field Demonstrated MTBF 106 Hrs. See our website for details Note 1: Line and load regulation is limited by duty cycle quantization and does not indicate a shift in the internal voltage reference. Note 2: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: [email protected]) Note 3: If the output voltage falls below the Output DC Current Limit Shutdown Voltage for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time. Note 4: Higher values of isolation capacitance can be added external to the module. Product # PQ50090QGB11 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 4 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification PQ50 Standards and Qualifications Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1:2003 CAN/CSA-C22.2 No. 60950-1:2003 EN60950-1:2001 Needle Flame Test (IEC 695-2-2) IEC 61000-4-2 Pending Basic Insulation 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. Parameter QUALIFICATION TESTING Life Test Vibration Mechanical Shock Temperature Cycling Power/Thermal Cycling Design Marginality Humidity Solderability Product # PQ50090QGB11 # Units Test Conditions 32 5 5 10 5 5 5 15 pins Phone 1-888-567-9596 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 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 5 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification 100 14 95 12 Power Dissipation (W) Efficiency (%) 90 85 80 75 70 10 8 6 4 44 Vin 44 Vin 48 Vin 65 48 Vin 2 52 Vin 52 Vin 0 60 0 1 2 3 4 5 6 Load Current (A) 7 8 9 10 0 11 Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 1 2 3 4 5 6 Load Current (A) 7 8 9 10 11 Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25°C. 12 10 Iout(A) 8 6 4 400LFM(2.0m/s) 300LFM(1.5m/s) 2 200LFM(1.0m/s) 100LFM(0.5 m/S) 0 25 40 55 70 85 Semiconductor junction temperature is within 1°C of surface temperature Ambient Air Temperature(°C) Figure 3: Maximum output power-derating curve vs. ambient air temperature for airflow rates of 100LFM through 400LFM with air flowing from pin 3 to pin 1 (nominal input voltage). Figure 4: Thermal plot of converter at 11A load current (99W) with 70°C baseplate temperature. Air is flowing across the converter from pin 3 to pin 1 (nominal input voltage). Figure 5: Turn-on transient at full load (resistive load) (4 ms/div). Ch 1: Vout (2 V/div) Ch 2: ON/OFF input (5 V/div) Figure 6: Turn-on transient at zero load (4ms/div). Ch 1: Vout (2V/div) Ch 2: ON/OFF input (5V/div) Product # PQ50090QGB11 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 6 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification Figure 7: Output voltage response to step-change in load current (50%-75%-50% of Iout(max); dI/dt = 0.1A/μ s; 1 ms/div). Load cap: 1uF ceramic and 10μF, 100mOhm ESR tantulum capacitors. Top trace: Vout (200mV/ div). Bottom trace: Iout (2A/div).. Input Reflected Ripple Current source impedance Input Terminal Ripple Current iS iC Figure 8: Output voltage response to step-change in load current (50%-75%-50% of Iout(max): dI/dt = 0.5A/μ s; 1 ms/div). Load cap: 470μF, 30mOhm electrolitic capacitor. Top trace: Vout (200mV/div). Bottom trace: Iout (2A/div). Output Voltage Ripple DC-DC Converter VOUT VSOURCE electrolytic capacitor ceramic capacitor tantalum capacitor Figure 9: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 10), Input Reflected Ripple Current (Figure 11) and Output Voltage Ripple (Figure 12). Figure 10: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 10μH source impedance and 47μF electrolytic capacitor (200 mA/div; 2μs/div). See Figure 9. Figure 11: Input reflected ripple current, is, through a 10μH source inductor at nominal input voltage and rated load current (10mA/div; 2 μs/div). See Figure 9. Figure 12: Output voltage ripple at nominal input voltage and rated load current (50mV/div; 1μs/div). Load capacitance: 1μF ceramic capacitor and 10μF tantalum capacitor. Bandwidth: 20MHz. See Fig 9. Product # PQ50090QGB11 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 7 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification 10 Output Voltage (V) 9 8 7 6 44Vin 48Vin 5 52Vin 4 0 2 4 6 8 10 12 14 16 Load Current (A) Figure 13: Load current (5A/div; 100μs/div) as a function of time when the converter attempts to turn on into a 1mOhm short circuit. 1 Figure 14: Output voltage versus load current showing typical current limit curves. 0 48 Vin 48 Vin 0.1 0.01 0.001 48 Vin -20 Forward Transmission (dB) Output Impedance (ohms) -10 -30 -40 -50 -60 -70 -80 48 Vin -90 0.0001 -100 10 100 1,000 Hz 10,000 100 1,000 10,000 Hz 100,000 Figure 16: Magnitude of incremental forward transmission (FT = Vout/Vin) for nominal input voltage at full rated power. Figure 15: Magnitude of incremental output impedance (Zout = Vout/Iout) for nominal input voltage at full rated power. 5 10 100,000 100 48 Vin 48 Vin Input Impedance (ohms) Reverse Transmission (dB) -5 -15 -25 -35 -45 10 1 48 Vin 48 Vin 0.1 -55 10 100 1,000 10,000 10 100,000 Hz Figure 17: Magnitude of incremental reverse transmission (RT = Iin/Iout) for nominal input voltage at full load Product # PQ50090QGB11 Phone 1-888-567-9596 100 1,000 10,000 100,000 Hz Figure 18: Magnitude of incremental input impedance (Zint = Vin/Iin) for nominal input voltage at full load www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 8 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification BASIC OPERATION AND FEATURES CONTROL FEATURES The PowerQor series converter 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-down to achieve the low output voltage required. 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. 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 PowerQor converter 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. Since a heatsink is not required, the PowerQor converter does not need a metal baseplate or potting material to help conduct the dissipated energy to the heatsink. The PowerQor converter can thus be built more simply and reliably using high yield surface mount techniques on a PCB substrate. The PowerQor series of half-brick and quarter-brick converters 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) 5V ON/OFF Positive Logic (Permanently Enabled) 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. 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. 162k ON/OFF TTL/ CMOS 5V Vin(+) 50k TTL ON/OFF 100k Vin(_) Open Collector Enable Circuit Vin(_) Direct Logic Drive Figure A: Various circuits for driving the ON/OFF pin. Product # PQ50090QGB11 Vin(_) Phone 1-888-567-9596 Figure B: Internal ON/OFF pin circuitry www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 9 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification 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 ( ) 511 - 10.22 (kW) Rtrim-down = D% where D% = 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(100+D%) _ 511 _ 10.22 1.225D% D% ) (kW) VOUT = Nominal Output Voltage Figure C graphs 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. 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”. 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 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. Figure C: Trim Graph 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. Product # PQ50090QGB11 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 10 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification 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. Input Filtering and External Capacitance: Figure E below 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. Application Circuits: Figure D below provides a typical circuit diagram which details the input filtering and voltage trimming. Vin(+) Vin External Input Filter Vsense(+) Electrolytic Capacitor 47µF Vout(+) ON/OFF Trim Vsense(_) Vin(_) Rtrim-up or Rtrim-down Cload Iload Vout(_) Figure D: Typical application circuit (negative logic unit, permanently enabled). L Vin(+) C Vin(_) Figure E: Internal Input Filter Diagram (component values listed on page 3). Product # PQ50090QGB11 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 11 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification Startup Inhibit Period: The Startup Inhibit Period ensures that the converter will remain off for approximately 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) • Output Over-Voltage Protection Figure F shows three turn-on scenarios, where a Startup Inhibit Period is initiated at t0, t1, and t2: 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. • Over Temperature Shutdown • Current Limit 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. • Short Circuit Protection • Turned off by the ON/OFF input Vin Under-Voltage Lockout TurnOn Threshold ON/OFF (neg logic) ON OFF ON Vout OFF ON 8ms (typical turn on time) 200ms (typical start-up inhibit period) t1 t0 200ms 200ms t t2 Figure F: Startup Inhibit Period (turn-on time not to scale) Product # PQ50090QGB11 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005485 Rev. A 03/29/10 Page 12 Input:48V Output:9.0V Current:11A Part No.:PQ50090QGB11 Technical Specification PART NUMBERING SYSTEM ORDERING INFORMATION The part numbering system for SynQor’s dc-dc converters follows the format shown in the example below. PQ 5 0 0 9 0Q GB 1 1 N N S -G 6/6 RoHS 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. Add “-G” to the model number for 6/6 RoHS compliance. Options (see Ordering Information) Output Current Thermal Design Performance Level Model Number Input Voltage Output Voltage Max Output Current PQ50090QGB11NNS 44-52V 9.0V 11A The following options must be included in place of the x y z spaces in the model numbers listed above. Package Size Output Voltage Input Voltage Thermal Design Product Family Options Description: x y z Enable Logic Pin Style B - Baseplated 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 [email protected]. N - Negative Feature Set N - 0.145” S - Standard Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Summary web page for more options. Many operational functions of this converter are programmable. Contact the factory regarding customizing. PATENTS SynQor holds the following U.S. patents, one or more of which apply to this product. Additional patent applications may be pending or filed in the future. 5,999,417 6,222,742 6,545,890 6,577,109 6,594,159 6,731,520 6,894,468 6,896,526 6,927,987 7,050,309 7,072,190 7,085,146 7,119,524 7,269,034 7,272,021 7,272,023 7,558,083 7,564,702 Contact SynQor for further information: Phone: Toll Free: Fax: E-mail: Web: Address: Product # PQ50090QGB11 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.# 005-0005485 Rev. A 03/29/10 Page 13