Technical Specification NQ40W40QTx35 9-40V 0 - 40V 35A Non- Quarter-brick Continuous Input Output Current Isolated DC-DC Converter The NiQor® half-brick dc-dc converter is a non-isolated buckboost regulator, which employs synchronous rectification to achieve extremely high conversion efficiency. The High Input Voltage NiQor Brick family of converters can be used in traditional DPA (distributed power architecture) systems or provide a regulated output voltage from a battery source or other variable voltage source. The NiQor Brick family can be configured to Buck the input voltage down to a lower voltage or Boost the input voltage up to a higher voltage using a single external resistor. The module is RoHS 6/6 compliant (see last page). Non-Isolated C-G 5NN TC3 @ 35A Q 0 0 W 4 V UT NQ4 9-40 O 4 0 V IN NiQor Quarter-brick module Operational Features • • • • • • • Protection Features High efficiency, 96% at full rated load current Delivers up to 35A of output current Input Voltage Range: 9-40Vdc Output Voltage Range: 0 - 40V (negative output is possible) Extensive on-board input and output filtering No minimum load requirement means no preload resistors required Adjustable current limit with current monitor • Input under-voltage lockout protects the converter at low input voltage conditions • Over-current shutdown protects converter from excessive load current or short circuits • Input/output over-voltage protection protects load and regulator from damaging voltages • Thermal shutdown protects converter from abnormal environmental conditions Mechanical Features Safety Features • Industry standard pin-out configuration • Standard size: 1.54" x 2.39" x 0.515" 39.01 x 60.6 x 13.08 mm • Total weight: Encased - 3.5 oz. (100 g) • UL 60950-1/R:2011-12 Pending • EN 60950-1/A2:2013 Pending • CAN/CSA-C22.2 No. 60950-1/A1:2011 Pending Contents Control Features • • • • • On/Off control Output voltage trim permits custom voltages Remote Sense Settable current limit Output voltage trim range of 0V - 40V Product # NQ40W40QTx35 Phone 1-888-567-9596 Page No. Standard Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Flanged Mechanical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Standards & Qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 1 of 13 Input: Outputs: Current: Package Standard Mechanical Diagram 1.536 [ 39,01 .020 0,5 ] .810 [ 20,57 ] .600 .450 [ 15,24 ] [ 11,43 ] .300 .150 9-40V 0 - 40V 35A Quarter-brick .263 [ 6,7 [ 7,62 ] [ 3,81 ] .020 0,5 ] .515 .025 [13.08 0.63] OVERALL HEIGHT 8 7 6 5 4 2.386 [ 60,6 .020 0,5 ] TOP VIEW 1.86 [ 47,2 ] 2.00 [ 50,8 ] SIDE VIEW M3 THREADED INSERTS 2 PLACES SEE NOTES 1 &2 1 .183 .020 [ 4,65 0,5 ] 2 3 .468 .020 .300 [ 7,62 ] [ 11,89 .600 [ 15,24 ] 0,5 ] NOTES 1) 2) 3) 4) 5) 6) 7) Applied torque per screw should not exceed 6in lb (.7Nm) Baseplate flatness tolerance is 0.004” (.10mm) TIR for surface Pins 1-3 and 5-7 are 0.040” (1.02mm) dia. with 0.080” (2.03mm) dia. Pins 4 and 8 are 0.080” (2.03mm) dia. with .125” (3.18) dia. standoff Undimensioned components are shown for visual reference only All pins: Material: Copper Alloy, Finish: Matte Tin over Nickel Plate All dimensions in inches[mm]. Tolerances: X.XXIN +/-0.02 (X.Xmm +/-0.5mm) X.XXXIN +/-0.010 (X.XXmm +/8) Weight: 3.5 oz. (100 g) 9) Threaded or non-threaded options available 10 Workmanship: Meets or exceeds IPC-A-610 Class II Product # NQ40W40QTx35 .145 [ 3,68 ] Phone 1-888-567-9596 www.synqor.com .020 .010 [ 0,51 0,25 ] BOTTOMSIDE CLEARANCE Pin 1 2 3 4 Label +Vin On/Off -Vin -Vout 5 Vsense- 6 Vset 7 Vsense+ PIN DESIGNATIONS Function Positive Supply Input Input to enable/disable the converter, TTL Negative Supply Input, internally connected to Pin 4 Negative Power Output, internally connected to Pin 3 Negative Power Voltage Sense. See Note 1 (S option) Iset (C option) Input to set the maximum output voltage. Positive Output Voltage Sense. See Note 2 (S option) Imon (C option) Positive Power Output +Vout 8 Notes: 1)Vsense- should be permanently connected to -Vout either at the converter or remotely. 2)Vsense+ should be permanently connected to +Vout either at the converter or remotely. Doc.# 005-0006682 Rev. 1 06/15/15 Page 2 of 13 Flanged Mechanical Diagram 2.200 [55.88] 2.000 [50.80] 1.536 [39.01] 9-40V 0 - 40V 35A Quarter-brick Input: Outputs: Current: Package SEATING PLANE HEIGHT .515 .025 [13.1 0.71] PIN EXTENSION 0.180 [4.6] 0.450 [11.4] 0.150 [3.8] 0.010 [0.25] 4 5 6 7 8 TOP VIEW 2.000 [50.8] 1.300 2.066 2.386 [33.02] [52.48] [60.60] 0.36 [9.1] 3 1 0.70 [17.8] FLANGE THICKNESS 0.125 [3.2] .130 [3.30] SEE NOTE 1 (6 PLCS) NOTES 1) APPLIED TORQUE PER M3 OR 4-40 SCREW 4in-lb RECOMMENDED (5in-lb LIMIT) 2) BASEPLATE FLATNESS TOLERANCE IS 0.010” (.25mm) TIR FOR SURFACE. 3) PINS 1-3 and 5-7 ARE 0.040” (1.02mm) DIA. WITH 0.080” (2.03mm) DIA. STANDOFFS. 4) PINS 4 AND 8 ARE 0.080” (2.03mm) DIA. WITH 0.125” (3.18mm) DIA STANDOFFS 5) ALL PINS: MATERIAL: COPPER ALLOY FINISH: MATTE TIN OVER NICKEL PLATE 6) WEIGHT: 3.78 oz. (107 g) TYPICAL 7) ALL DIMENSIONS IN INCHES(mm) 8) TOLERANCES: X.XXIN +/-0.02 (X.Xmm +/-0.5mm) X.XXXIN +/-0.010 (X.XXmm +/-0.25mm) Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com 2 1 0.300 [7.6] BOTTOMSIDE CLEARANCE .010 .010 [0.51 0.25] Pin 1 2 3 4 Label +Vin On/Off -Vin -Vout 5 Vsense- 6 Vset 7 Vsense+ 0.600 [15.2] PIN DESIGNATIONS Function Positive Supply Input Input to enable/disable the converter, TTL Negative Supply Input, internally connected to Pin 4 Negative Power Output, internally connected to Pin 3 Negative Power Voltage Sense. See Note 1 (S option) Iset (C option) Input to set the maximum output voltage. Positive Output Voltage Sense. See Note 2 (S option) Imon (C option) Positive Power Output +Vout 8 Notes: 1)Vsense- should be permanently connected to -Vout either at the converter or remotely. 2)Vsense+ should be permanently connected to +Vout either at the converter or remotely. Doc.# 005-0006682 Rev. 1 06/15/15 Page 3 of 13 Input: Outputs: Current: Package Technical Specification 9-40V 0 - 40V 35A Quarter-brick NQ40w40QTx35 Electrical Characteristics Ta = 25 °C, airflow rate = 300 LFM, Vin = 28 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 ABSOLUTE MAXIMUM RATINGS Input Voltage Non-Operating Operating Storage Temperature Voltage at ON/OFF input pin Voltage at Vset and Iset Pins Voltage between Vsense+ and +Vout pins Voltage between Vsense- and -Vout pins Isolation between heatsink/case and all pins RECOMMENDED OPERATING CONDITIONS Input Voltage Range Input Fuse Rating Input Current External Input Capacitance Output Voltage Output Current INPUT CHARACTERISTICS Input Under-Voltage Lockout Turn-On Voltage Threshold Turn-Off Voltage Threshold Lockout Hysteresis Input Current Limit No-Load Input Current “ “ Disabled Input Current Input Filter Components Value (C\L\C) OUTPUT CHARACTERISTICS Output Voltage Range Operating Output Current Range Output Voltage Regulation Load Regulation Total Output Voltage Range Min. All All All All -1 Typ. Max. 60 40 125 5.5 3.5 ±6.0 ±0.25 -45 0 -0.2 Units Notes & Conditions V V °C V V V V Continuous Continuous Note 1 No isolation guaranteed All All 9 All All All 100 0 0 All All All All 12 28 40 All All 9.2 5.1 All All 0 0 All 40 50 35 V A A µF V A 40 35 9.5 5.5 4.0 10 5.9 Turn on at 10V Fast blow external fuse recommended Input current max equals output rated current ESR > 50 mΩ See Note 2 Input voltage dependent V V V A mA mA mA mA µF\µH\µF 39.5 125 115 170 2.0 10 \ 0.33 \ 40 40 35 V A Set by Vset resistor 12 24 40 All All All All -2%*Vout*Iout/Imax ±100mV ±2%*Vout + Load Reg 100 800 500 39.5 100 40 \ 0.1 \ 120 1 mV mV mV A µF µF\µH\µF µA 28 Vin Full Load; 100uF; 20 MHz b.w. " " Effective on input, output condition ESR > 1 mΩ 12 12 40 40 1000 400 1600 1000 mV us mV us (0.1 A/µs); 50%-75%-50% Iout max To within 1.5% Vout nom. (0.1 A/µs); 50%-75%-50% Iout max To within 1.5% Vout nom. All All All 2 3.1 0 ms V/ms V All Output Voltage Ripple and Noise (pk-pk/28Vin) “ “ Output DC Over Current limit External Output Capacitance Output Filter Components Reverse Current DYNAMIC CHARACTERISTICS Output Voltage during Current Transient For a Step Change in Output Current Settling Time For a Step Change in Output Current Settling Time Turn on Transient Startup delay Rise Rate Output Voltage Overshoot Product # NQ40W40QTx35 Vout Phone 1-888-567-9596 www.synqor.com Between Sense pins, over sample, line, load, temp. & life. Disabled Resistive load " " Doc.# 005-0006682 Rev. 1 06/15/15 Page 4 of 13 Input: Outputs: Current: Package Technical Specification 9-40V 0 - 40V 35A Quarter-brick NQ40w40QTx35 Electrical Characteristics (continued) Ta = 25 °C, airflow rate = 300 LFM, Vin = 28 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 Vout Min. Typ. Max. Units EFFICIENCY 100% Load; 24 Vin 12 92 % 100% Load; 36 Vin 24 95 % 100% Load; 12 Vin 36 93 % 50% Load; 24 Vin 12 94 % 50% Load; 36 Vin 24 96 % 50% Load; 12 Vin 36 94 % FEATURE CHARACTERISTICS Switching Frequency All 240 250 260 KHz On/Off, Negative (N) Logic Off-State Threshold Voltage All 1.4 1.5 V On-State Threshold Voltage All 1.0 1.1 V Threshold Hysteresis All 0.3 V Pin Pull-Up Voltage All 3.3 V Pin Pull-Up Resistance All 10 kΩ Output Voltage Setpoint Pin Pull-Up Voltage All 2.5 V Pin Pull-Up Resistance All 10.9 kΩ Output Voltage Setpoint Range All 0 40 V Output Over-Voltage Shutdown All 65 V Output Current Setpoint (C-option only) Pin Pull-Up Voltage All 2.5 V Pin Pull-Up Resistance All 10 kΩ Output Current Setpoint Range All 0 35 A Input/Ouput Current Limit All 36 39.5 43 A Ishare/Imon Pin Voltage at No Load All 0.2 V Pin Voltage at Full Load (Imax) All 2.2 V Pin Output Resistance All 2.5 kΩ Over-Temperature Shutdown All 115 °C Over-Temperature Shutdown Restart Hysteresis All 15 °C RELIABILITY CHARACTERISTICS Calculated MTBF (TR-NWT-000332; Telcordia) All TBD 106 Hrs. Calculated MTBF (MIL-HDBK-217F; MIL-217) All TBD 106 Hrs. Field Demonstrated MTBF All 106 Hrs. TEMP LIMITS FOR POWER DERATING Semiconductor Junction Temperature All 125 °C Board Temperature All 125 °C Baseplate Temperature All 100 °C Note 1: All control signals are referenced to Vsense- pin. Note 2: Input capacitance and ESR of input capacitance dictated by input stability requirements. Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com Notes & Conditions See REMOTE ON/OFF: in CONTROL FEATURES See OUTPUT VOLTAGE SETPOINT: in CONTROL FEATURES Fixed - Does vary with output setpoint See OUTPUT CURRENT SETPOINT: in CONTROL FEATURES Average PCB Temperature 70 °C Tbaseplate 70 °C Tbaseplate See our website for details Package rated to 150 °C UL rated max operating temp 130 °C Doc.# 005-0006682 Rev. 1 06/15/15 Page 5 of 13 Input: Outputs: Current: Package Technical Specification 100 9-40V 0 - 40V 35A Quarter-brick 40 35 30 Pdiss. (W) Efficiency (%) 95 90 36Vin 24Vout 24Vin 12Vout 85 25 20 15 36Vin 24Vout 24Vin 12Vout 36Vin 12Vout 24Vin 36Vout 12Vin 24Vout 12Vin 36Vout 10 36Vin 12Vout 24Vin36Vout 5 12Vin 24Vout 12Vin 36Vout 80 0 5 10 15 20 25 30 0 35 0 5 10 15 Load Current (A) 20 25 30 35 Load Current (A) Figure 1: Efficiency at different output voltages vs. load current for different input voltages at 25°C. Figure 2: Power dissipation at different output voltages vs. load current for different input voltages at 25°C. NQ40x40QTC35 Derated Output Current with 125C max Temp on Hottest Devices 40 1 µH source impedance 35 Derated Output Current (A) 30 25 i S See Fig. 5 See Fig. 6 i C 10 Dc-dc Converter Tb=80C, Vo=12V Tb=100C, Vo=12V Tb=80C, Vo=24V Tb=100C, Vo=24V Tb=80C, Vo=36V Tb=100C, Vo=36V 15 V IN 20 V SOURCE 10 20 30 * See values for recommended external input capacitance. Inductor optional as needed. 40 Input Voltage (V) OUT 100 µF 100mΩ ESR C* 5 0 V tantalum capacitor Figure 3: Maximum output power derating curve with a controlled baseplate temperature of 80°C and 100°C vs. Input voltage. Figure 4: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Fig 5) and Output Voltage Ripple (Fig 6). Figure 5: Input Terminal Ripple Current at 28V input and rated load current (100mA/div). Load capacitance: 100uF electrolytic cap. Bandwidth: 20MHz, (2uS/div). See Figure 4 Figure 6: Output Voltage Ripple at 28V input and rated load current (500mV/ div). Load capacitance: 100uF electrolytic cap. Bandwidth: 20MHz, (2uS/div). See Figure 4. Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 6 of 13 Input: Outputs: Current: Package Technical Specification Figure 7: Turn-on transient at 28V input; full load (10ms/div). Top Traces: Vout (10V/div). Bottom Trace: ON/OFF input (5V/div) 9-40V 0 - 40V 35A Quarter-brick Figure 8: Turn-on transient at 28V input; zero load (10ms/div). Top Traces: Vout (10V/div). Bottom Trace: ON/OFF input (5V/div) 2.50 Vset voltage (V) 2.00 1.50 1.00 0.50 0.00 0 10 20 30 40 Output Voltage Setpoint (V) Figure 9: Vset pin voltage vs. Output Voltage Setpoint. Figure 10: Output Voltage vs. Vset pin voltage dynamics; 28Vin, 10A out (2mS/ div). Top trace: Vset pin voltage (300mV/div). Bottom trace: Output Voltage (2V/ div). 2.5 Iset Pin Voltage (V) 2.0 1.5 1.0 0.5 0.0 0 5 10 15 20 25 30 35 Output Current Setpoint (A) Figure 11: Iset pin voltage vs. Output Current Limit Setpoint. Product # NQ40W40QTx35 Phone 1-888-567-9596 Figure 12: Output Current vs Iset pin voltage dynamics; 28Vin 10Vout (5mS/ div). Top Trace: Output Current (2A/div). Bottom Trace: Iset pin voltage (200mV/div). www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 7 of 13 Input: Outputs: Current: Package Technical Specification 9-40V 0 - 40V 35A Quarter-brick 3.0 2.5 Ishare (V) 2.0 1.5 1.0 0.5 0.0 0 5 10 15 20 25 30 35 40 Output Current (A) Figure 13: Ishare/Imon pin Voltage vs. Output Load Current. Product # NQ40W40QTx35 Phone 1-888-567-9596 Figure 14: Output voltage response for 28V input; 5V, 12V, 28V, 40V output to step change in load current (50%-75%-50% of Iout max; di/dt=0.1A/uS). Load cap: 100uF electrolytic cap, Vout (1V/div); (2mS/div) www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 8 of 13 Input: Outputs: Current: Package Technical Specification 9-40V 0 - 40V 35A Quarter-brick Standards & Qualifications Parameter Notes & Conditions STANDARDS COMPLIANCE UL 60950-1/R:2011-12 Pending EN 60950-1/A2:2013 Pending CAN/CSA-C22.2 No. 60950-1/A1:2011 Pending 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 Altitude # Units Test Conditions 32 5 5 10 5 5 5 15 pins 2 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, y and 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 70,000 feet (21 km), see Note Note: A conductive cooling design is generally needed for high altitude applications because of naturally poor convective cooling at rare atmospheres. Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 9 of 13 Input: Outputs: Current: Package Application Section BASIC OPERATION AND FEATURES 9-40V 0 - 40V 35A Quarter-brick CONTROL FEATURES This converter consists of integrated buck and boost converters, both controlled simultaneously by a digital controller. It automatically changes operating mode (buck mode or boost) when the line voltage or output set point changes. Very high efficiency is maintained over wide input and output ranges by shifting operational modes and use of synchronous rectifiers. REMOTE ON/OFF: Only Negative On/Off logic is available in the converter series: logic high at the input turns the converter Off while a logic low turns in On. Timing of this is shown in Figures 7, 8. A high level can be driven to any voltage between 1.5V and 3.3V, or simply left floating as the unit contains an internal 10KΩ pull-up to 3.3V. The pin can be pulled low (to Vsense-) by an optocoupler, an openThe converter runs at a fixed frequency with a predictable source/drain transistor or wired permanently to Vsense-. To provide noise immunity the input has 0.3V of hysteresis. EMI performance. This quarter-brick converter uses the industry standard Multiple units that have a common Vsense- connection footprint and pin-out configuration. A typical V-I characteristic, can be controlled by the same On/Off signal, but it is with Vsetpoint=30V and Isetpoint=27A, when operating recommended that a small schottky diode be added to each input as shown in Figure B. from Vin=20V, is shown in Figure A. Vin1+ +Vin On/Off 50 Vo=Vmax 45 35 Output Voltage (V) Vout1+ HVNQ DC-DC Converter VsenseVin=40V 40 -Vin -Vout +Vin +Vout Vout- Increasing Vin 30 Vin=30V Vin2+ 25 On/Off Vin=20V Increase Vsetpoint 20 +Vout Vsense+ On/Off 15 HVNQ DC-DC Converter Vsense- Vin=10V 10 -Vin Increase Isetpoint 5 Vout2+ Vsense+ -Vout 0 0 5 10 15 20 Output Current (A) 25 30 Figure A 35 40 Figure B: OUTPUT VOLTAGE SETPOINT: The output voltage can be programmed to any voltage between 0 V dc and Vmax by connecting one resistor between the Pin 6 (Vset) and Pin 5 [Vsense(-)](S-Version) or Pin 4 [-Vout](C-version); See Figure C. For a desired output voltage, the value of the resistor should be: Rvset(Vset) = [( 11830 x Vmax Vset + 0.058 x Vmax ) -10912 ] (Ω) NOTE: To maintain the accuracy of the output voltage over load current, it is vital that the trim resistor be connected to the convertor's Vsense(-) pin (for the S-option) or -Vout pin (for the C-option), locally at the convertor, not at a remote location nearer to the load. A separate Kelvin connection to the PCB pad for the -Vout is optimal for the C-option. Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 10 of 13 Input: Outputs: Current: Package Application Section 1 Vin+ 8 +Vout +Vin Imon 7 Vout+ Imon Output 9-40V 0 - 40V 35A Quarter-brick PROTECTION FEATURES Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid 5 Rvset an input system instability problem, described in more detail Iset RIset 4 3 in the application note titled “Input System Instability”. The -Vout -Vin lockout circuitry is a comparator with DC hysteresis. When VoutVinthe input voltage is rising, it must exceed the typical TurnOn 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 Figure C: Alternatively, the Vset pin can be driven from an external Threshold value before the converter will turn off. voltage source: Undriven, this pin floats at 2.5V which sets Output Current Shutdown: To provide protection in an the output to 0V. See Figure 10 for the large scale dynamics output short condition, the unit is equipped with internal short circuit protection. When the short-circuit protection is of this input. triggered, the converter shuts down and then waits an inhibit Vset Vvset(Vset) = 2.366 – 2.316 V time (~100ms), after which it tries to turn on again. If the Vmax short condition remains, the current limit circuit will limit the See Figure 9 output current. The unit will return to normal operation once where: the fault condition is removed. Vset = desired output voltage setpoint Internal Over-Voltage Protection: To fully protect from Vmax = maximum rated output voltage (40V) excessive output voltage, the unit contains an output overOUTPUT CURRENT SETPOINT: The maximum output voltage shutdown that is fixed at ~110% of Vmax. If this current (effectively the current limit) can be reduced to limit is reached, the converter shuts down and then waits an any value between 0 and Imax by connecting one resistor inhibit time (~100ms), after which it restsarts. between the Iset pin (5) and Vout- (4); see Figure C. The value of the resistor should be: Over-Temperature Shutdown: Two sensors in the module monitor the temperature of both the buck and boost 0.0469 Imax + Iset sections. When the temperature at either sensor exceeds the RIset(Iset) = *10200 -10 (Ω) Over Temperature Shutdown value, the converter is disabled. 1.153 Imax - Iset It will restart normally when it then cools by the amount of Alternatively, the Iset pin can be driven from an external voltage source: the Over-Temperature Shutdown Hysteresis. Cin 2 On/Off HVNQ DC-DC Converter [( Viset(Iset)= ( 0.0953+2.085 Vset Cout 6 ( ) ) ] * Iset/Imax ) V where: Iset = desired output current setpoint Imax = maximum rated output current (35A) Undriven, the Iset pin floats to 2.5V which sets the current limit at its nominal value of 115%*Imax. See Figure 12 for the large signal dynamics of this control. Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 11 of 13 Input: Outputs: Current: Package Application Section APPLICATION CONSIDERATIONS 9-40V 0 - 40V 35A Quarter-brick Cin2 Input filtering: These modules should be connected to a low-impedance source. A highly inductive source can affect the stability of the module. An input capacitor must be placed adjacent to the input pins of the module to minimize input ripple voltage and ensure stability. See SynQor's application note titled Input System Stability for guidance on selecting appropriate input filter elements. Vin+ +Vin Cin1 On/Off +Vout Vin-,Vout+ Vsense+ HVNQ DC-DC Converter Cout Vset Rvset Vsense- -Vin -Vout Vout- Figure D: Negative output setup Output capacitance: An output capacitor of at least 100uF with an ESR of ~50mOhms is recommended to damp Note that all control signals are referenced to Vsense-, which the resonance of the output filter. More capacitance can be in this arrangement is at -Vout potential. added to improve dynamic response to load variation; there is no upper limit on the value of the output capacitance. Very large output capacitors may slow the converter's start up time due to the current required to charge them being limited by current limit or Isetpoint. http://www.synqor.com/documents/appnotes/appnt_System_Instability.pdf Remote sense (S-option only): In the event of an open sense line, the module maintains output voltage regulation via internal resistors between its Vsense+ and +Vout, and Vsense- and -Vout pins. To avoid damaging those resistors, maintain the voltage differentials to within the limits in ABSOLUTE MAXIMUM RATINGS at all times. Current limit: Available current is limited by output current setpoint (at Iset) or input current limit (at Imax, whichever comes first. If Iset is maximized (Iset = Imax) then, for Vin >Vout Ilimit = 1.12 x Imax (Amps) for Vin < Vout where Imax = Maximum rated output current ( Ilimit = 1.12 x Imax Vin Vout ) (Amps) Generating Negative output voltage (inversion): The circuit shown in Figure D can be used to generate a negative output voltage from a positive input. Product # NQ40W40QTx35 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 12 of 13 Input: Outputs: Current: Package Ordering Information 9-40V 0 - 40V 35A Quarter-brick PART NUMBERING SYSTEM ORDERING INFORMATION The part numbering system for SynQor’s 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. Add “-G” to the model number for 6/6 RoHS compliance. NQ 4 0 W 4 0 Q T C 3 5 N N S - G 6/6 RoHS Options (see Ordering Information) Model Number Output Current NQ40w40QTx35Nyz-G Input Voltage 9-40V Output Voltage 0 - 40V Max Output Current 35A Thermal Design The following options must be included in place of the w x y z spaces in the model numbers listed above. Performance Level Package Size Output Voltage Mode (see Ordering Information) Options Description: x y z Thermal Design: Enable Pin Style: x Logic y Mode: w Input Voltage Product Family C - Encased 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. W - Buck / Boost V - Encased with Flanged Baseplate NNegative N - 0.145" R - 0.180" Y - 0.250" Feature Set: z S - Standard C - Current monitor output / Trimmable current limit 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]. Contact SynQor for further information and to order: Phone: Toll Free: Fax: E-mail: Web: Address: Product # NQ40W40QTx35 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 Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Summary web page for more options. PATENTS SynQor holds numerous U.S. patents, one or more of which apply to most of its power converter products. Any that apply to the product(s) listed in this document are identified by markings on the product(s) or on internal components of the product(s) in accordance with U.S. patent laws. SynQor’s patents include the following: 5,999,417 6,222,742 6,545,890 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 7,765,687 7,787,261 8,023,290 8,149,597 8,493,751 8,644,027 WARRANTY SynQor offers a two (2) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. www.synqor.com Doc.# 005-0006682 Rev. 1 06/15/15 Page 13 of 13