NQ10W50PKA07

NQ10W50PKA07 SYNQOR | Alldatasheet

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SSpecificationpecification NQ10W50PKA07NQ10W50PKA07 Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 1 TThhee NNiiQQoorr®® mmoodduullee iiss aa ssuurrffaaccee mmoouunntt,, DDCC//DDCC nnoonn--iissoollaatteedd bbuucckk rreegguullaattoorr,, wwiitthh aa ssiinnggllee pprrooggrraammmmaabbllee oouuttppuutt vvoollttaaggee.. TThhee ccoonnvveerrtteerr eemmppllooyyss aa ssyynncchhrroonnoouuss rreeccttiiffiiccaattiioonn aanndd aa ddiissccoonnttiinnuuoouuss mmooddee aatt lliigghhtt llooaaddss ttoo aacchhiieevvee eexxttrreemmeellyy ffaasstt ttrraannssiieenntt rreessppoonnssee aanndd hhiigghh ccoonn-- vveerrssiioonn eeffffiicciieennccyy.. TThhee NNiiQQoorr ffaammiillyy ooff ccoonnvveerrtteerrss aarree uusseedd pprreeddoomm-- iinnaatteellyy iinn DDPPAA ssyysstteemmss uussiinngg aa ffrroonntt eenndd DDCC//DDCC hhiigghh ppoowweerr bbrriicckk ((4488VViinn ttoo llooww vvoollttaaggee bbuuss)).. TThhee nnoonn--iissoollaatteedd NNiiQQoorr ccoonnvveerrtteerrss aarree tthheenn uusseedd aatt tthhee ppooiinntt ooff llooaadd ttoo ccrreeaattee tthhee llooww vvoollttaaggee oouuttppuuttss rreeqquuiirreedd bbyy tthhee ddeessiiggnn.. TTyyppiiccaall aapppplliiccaattiioonnss iinncclluuddee tteelleeccoomm//ddaattaa-- ccoomm,, iinndduussttrriiaall,, mmeeddiiccaall,, ttrraannssppoorrttaattiioonn,, ddaattaa pprroocceessssiinngg//ssttoorraaggee aanndd tteesstt eeqquuiippmmeenntt.. RRooHHSS CCoommpplliiaanntt ((sseeee ppaaggee 1122)).. NiQor NQ10W50PKA07 12V12V inin 0.7-5.0V0.7-5.0V 7 Amp7 Amp NonNon SMTSMT InputInput OutputsOutputs CurrentCurrent IsolatedIsolated SurSur face Mount Packageface Mount Package

• Ultra high efficiency, up to 93% at full load current
• Delivers up to 7 Amps of output current with no derat- ing up to 85C, 100LFM
• Input Voltage Range : 10.2 - 13.2V
• Fast transient response time
• Input voltage compensation gives excellent rejection of input voltage ripple and input voltage transients
• On-board input (capacitive) filtering
• No minimum load requirement means no preload resis- tors required
• High accuracy output voltage regulation
• Discontinuous mode option offers extremely low dissipa- tion at light loads Operational FeaturesOperational Features
• Current limit foldback protects converter from excessive load current or short circuits PrProtection Featuresotection Features
• UL/cUL 60950-1 recognized (US & Canada)
• 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 flammabil- ity requirements Safety FeaturesSafety Features
• Surface mount package
• Package size: 0.9” x 0.4” x 0.232”
• Total weight: 0.18 oz. (5.0 g), lower mass greatly reduces vibration and shock problems
• Open frame construction maximizes air flow cooling Mechanical FeaturesMechanical Features
• On/Off control positive logic
• Output voltage trim permits custom voltages and voltage margining
• Remote sense (+/- ) for output voltage compensation due to output distribution drops
• External/Internal reference options
• Up/Down margining with digital input signals ContrContr ol Featuresol Features Non-IsolatedNon-Isolated

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 2 Pin No. Name Function

1 CTRL GND Low Current Ground

2 OE Output Enable (active high)

3 PWRGD Power Good (active high)

4 PWR GND Power (Vin & Vout) Ground

6 TRIMN Margin Control (trim down)

7 VSET Setpoint Voltage

8 VIN Input Voltage

9 TRIMP Margin Control (trim up)

10 VOUT Output Voltage

11 VADJ Feedback Voltage

1) SMT Contacts: Material - Brass Finish - Gold over Nickel plate 2) Lead co-planarity Pins 1-10 = 0.004”max (0.10 mm) 3) Pin designator located on top side inductor label. 4) SynQor part number on two lines of text 5) Product Info: WWYY - Date code; RR - Revision; L - Manuf. code 6) Product serial number. Barcode format Datamatrix or Micro PDF417. Barcode includes “S” for serial number prefix. 7) Product serial number, human readable text. 8) Undimensioned components are shown for visual reference only. 9) All dimensions in inches (mm) 10) Weight: 0.18 oz. (5 g) typical 11) Workmanship: Meets or exceeds IPC-A-610C Class II Surface Mount Package SMT CONTACT CONNECTIONS MECHANICAL DIAGRAM 0.400 (10.16) 0.900 (22.86) P1 P2 P3 P4 P7P8P9P10P11 0.080 (2.03) Typ. 0.063 (1.60) Typ. 0.020 +.009/-.001 (0.5 +.22/-.02) Bottomside Clearance 0.226 +0.006 (5.74 +0.15) 0.063 (1.60) 0.770 (19.56) 0.195 (4.95) 0.155 (3.94) 0.310 (7.87) 0.045 (1.14) 0.575 (14.61) 0.385 (9.78) Side View Bottom View Top View Note 6 Note 5 Note 3 Note 7 Note 4

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 3 Parameter Setpoint Min. Typ. Max. Units Notes & Conditions ABSOLUTE MAXIMUM RATINGS Non-Operating Input Voltage All 15 V Continuous Operating Input Voltage All 10.2 12.0 13.2 V Continuous Operating Temperature All -5 85 °C Consult factory for lower operating temperatures Storage Temperature All -40 85 °C TRIMP and TRIMN pins All -0.3 5.0 V VSET pin All -0.3 2.7 V Voltage at OE (output enable) input pin All -0.3 5 V ON/OFF control pin INPUT CHARACTERISTICS Operating Input Voltage Range All 10.2 12 13.2 V Input Under-Voltage Lockout Turn-On Voltage Threshold All 3.3 4.0 V Turn-Off Voltage Threshold All 3.2 3.9 V Maximum Input Current (100% Load, 10.2Vin) 0.7V 0.7 A “ 0.9V 0.9 A “ 1.2V 1.1 A “ 1.5V 1.3 A “ 1.8V 1.5 A “ 2.5V 2.0 A “ 3.3V 2.6 A “ 5.0V 3.8 A No-Load Input Current (DCM Versions QS1, QS2 1) All 4 6 mA See note 1 in page 5 No-Load Input Current (CCM Versions QS3, QS4 2) 0.7V 14 20 mA At 25ºC. See note 2 in page 5 “ 0.9V 16 25 mA “ 1.2V 19 30 mA “ 1.5V 22 35 mA “ 1.8V 25 40 mA “ 2.5V 31 45 mA “ 3.3V 37 55 mA “ 5.0V 46 70 mA Disabled Input Current All 0.5 2.0 mA Inrush Current Transient Rating All 0.02 A2s Including 22uF external input capacitor Input Ripple Voltage (RMS) 0.7V 0.027 V With 22 µF external cap; see Figures 14 & 17 “ 0.9V 0.032 V “ 1.2V 0.036 V “ 1.5V 0.020 V “ 1.8V 0.013 V “ 2.5V 0.022 V “ 3.3V 0.028 V “ 5.0V 0.037 V Recommended Input Fuse for 0.9Vout All 1.0 A Use fuse with minimal additional current rating Recommended Input Fuse for 3.3Vout All 3.0 A Use fuse with minimal additional current rating Input Filter Capacitor Value All 22 µF Internal value Recommended External Input Capacitance All 22 µF Ceramic OUTPUT CHARACTERISTICS Output Voltage Set Point (QS1, QS4 versions) All +1.2 % With 50% load, see trimming app note Output Voltage Set Point (QS2, QS3 versions) All +0.7 % With Vset=0.7V, 50% load, see trimming app note Output Voltage Regulation 3 See trimming and remote sensing app notes Over Line All +0.1 % Over Load All +0.2 % Over Temperature All +0.3 % Total Output Voltage Range All +1.8 % Over sample, line, load, temperature & life Output Voltage Ripple and Noise 20MHz bandwidth, 110uF ceramic output cap. Peak-to-Peak All 10 25 mV Full Load. See note 4 in page 5 Operating Output Current Range All 0 7 A See note 3 in page 5 Output DC Current-Limit Threshold All 15 A 5% drop in Vout; see Figure 16 Recommended Output Capacitance All 110 176 2000 µF Nominal Vout at 7A resistive load ELECTRICAL CHARACTERISTICS - NQ10W50PKA07 Series TA=25°C, airflow rate=300 LFM, V in=12Vdc unless otherwise noted; full operating temperature range is -5°C to +85°C ambient tempera- ture with appropriate power derating. Specifications subject to change without notice.

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 4 Parameter Setpoint Min. Typ. Max. Units Notes & Conditions OUTPUT CHARACTERISTICS (continued) Output Voltage Ripple and Noise 20MHz bandwidth, 110uF ceramic output cap. Peak-to-Peak All 10 25 mV Full Load. See note 4 in page 5 DYNAMIC CHARACTERISTICS Input Voltage Ripple Rejection 5V -60 dB 120 Hz, see Figure 15 “ 0.7V, 1,8V -80 dB 120 Hz, see Figure 15 “ All -40 dB Audio to 5 MHz; see Figure 15 Output Voltage during Load Current Transient dB See Figures 9 & 10 Step Change in Output Current All +100 mV 10% to 90% to 10% Iout max, 5A/uS or faster Settling Time All 20 µs To within 1.5% Vout nom Turn-On Transient VSET=0.8V for QS2 or QS3 “ 3.3V 2.7 3.9 5.0 ms Full load, Vout=97% steady state level “ 5.0V 3.3 4.4 5.5 ms Full load, Vout=97% steady state level EFFICIENCY 85% Load (6A) 0.7V 77 % “ 0.9V 81 % “ 1.2V 84 % “ 1.5V 86 % “ 1.8V 87 % “ 2.5V 90 % “ 3.3V 92 % “ 5.0V 94 % 28% Load (2A) 0.7V 81 % “ 0.9V 83 % “ 1.2V 84 % “ 1.5V 86 % “ 1.8V 87 % “ 2.5V 89 % “ 3.3V 91 % “ 5.0V 93 % TEMP. LIMITS FOR POWER DERATING Semiconductor Junction Temperature All 125 °C Package rated to 150°C Board Temperature All 125 °C UL rated max operating temp 130°C FEATURE CHARACTERISTICS Switching Frequency 0.7V 340 395 450 kHz See Figure 18 for other voltages “ 5.0V 660 740 830 kHz See Figure 18 for other voltages ON/OFF Control Off-State Voltage All 0 1.0 V Applied at OE pin On-State Voltage All 2.0 5.0 V Applied at OE pin Transition Voltage All 1.1 1.9 V OE Pin Input Resistance All 332 V To ground only, no internal pull-up Output Over-Voltage Protection All 110 130 % Over full temp range; % of nominal Vout External Reference Input (Versions QS2, QS3) VSET Pin Voltage Range All 0.7 0.8 1.0 V Input Filter All 1.0/1.0 kW/µF Internal filter Margining (Versions QS1, QS4) Margin-Up Trimming All 4.5 5.0 5.5 % Vout increase when pulling up TRIMP pin Margin-Down Trimming All -5.5 -5.0 -4.5 % Vout decrease when pulling up TRIMN pin TRIMN and TRIMP Pin Thresholds All 1.4 V PowerGood Internal Pull-up Resistance All 100 k W Internal Pull-up Voltage All 4.7 5.0 5.3 V Upper Threshold All 7 10 13 % Lower Threshold All -13 -10 -7 % Hysteresis All 1.5 3 % Low Voltage All 0.15 0.4 V With 4mA sink current ELECTRICAL CHARACTERISTICS (continued) - NQ10W50PKA07 Series

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 5 STANDARDS COMPLIANCE Parameter Notes STANDARDS COMPLIANCE UL/cUL 60950-1 File # E194341 EN60950-1 Certified by TUV 72/23/EEC 93/68/EEC Needle Flame Test (IEC 695-2-2) Test on entire assembly; board & plastic components UL94V-0 compliant IEC 61000-4-2 ESD test, 8kV - NP, 15kV air - NP (Normal Performance) GR-1089-CORE Section 7 - electrical safety, Section 9 - bonding/grounding Telcordia (Bellcore) GR-513

• An external input fuse must always be used to meet these safety requirements. QUALIFICATION TESTING Parameter # Units Test Conditions QUALIFICATION TESTING Life Test 32 95% rated V in and load, units at derating point, 1000 hours Vibration 5 10-55Hz sweep, 0.060” total excursion,1 min./sweep, 120 sweeps for 3 axis Mechanical Shock 5 100g minimum, 2 drops in x and y axis, 1 drop in z axis Temperature Cycling 10 -40°C to 100°C, unit temp. ramp 15°C/min., 500 cycles Power/Thermal Cycling 5 T operating = min to max, Vin = min to max, full load, 100 cycles Design Marginality 5T min-10°C to Tmax+10°C, 5°C steps, Vin = min to max, 0-105% load Humidity 5 85°C, 85% RH, 1000 hours, 2 minutes on and 6 hours off Solderability 15 pins 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 more information about Proof of Design and Proof of Manufacturing processes. OPTIONS SynQor provides various options for Packaging, Mounting, Optional Functions and Current Sharing for this family of DC/DC converters. Please consult the last pageof this specification sheet for information on available options. PATENTS SynQor is protected under various patents. Please consult the last page for further information. Note 1: DCM = Discontinuous Conduction Mode - see application notes . Note 2: CCM = Continuous Conduction Mode - see application notes . Note 3: QS1 and QS2 versions at no load (up to 50mA) may have a higher Vout error of up to +1.5% associated with deep discontinuous mode operation. Note 4: The user will see higher output ripple at light loads (< 4A @ 5V, <1.5A @ 0.9V) on the discontinuous conduction mode versions. To reduce output ripple, increase output capacitance or use continuous conduction mode version. Parameter Setpoint Min. Typ. Max. Units Notes & Conditions FEATURE CHARACTERISTICS (continued) Trimming and Remote Sense Output Voltage Trim Range All 0.7 5.25 V Measured across pins 10 & 4 Output Voltage Remote Sense Range All +5 % Measured across pins 10 & 4, less setpoint voltage Remote Sense Accuracy 5.0V 94 % Percentage of voltage drop compensated “ 1.8V 98 % Percentage of voltage drop compensated Thevenin Resistance All 990 W At VADJ pin with no external resistance Thevenin Voltage All Vout/101 V At VADJ pin with no external resistance RELIABILITY CHARACTERISTICS Calculated MTBF (Telcordia) 5.0Vout 21.5 106 Hrs. TR-NWT-000332; 100% load, 300LFM, 40oC Ta Calculated MTBF (MIL-217) 5.0Vout 12.4 106 Hrs. MIL-HDBK-217F; 100% load, 300LFM, 40oC Ta Demonstrated MTBF 5.0Vout 1.0 106 Hrs. Field demonstrated MTBF ELECTRICAL CHARACTERISTICS (continued) - NQ10W50PKA07 Series

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 8 Figure 13: Output Voltage Ripple at 12V input voltage and rated load current (10 mV/div). Load capacitance: 5 ceramic 22 µF capacitors. Bandwidth: 20 MHz. See Figure 17. Figure 14: Input Voltage Ripple across 22uF external input capacitor at 12V input voltage and rated load cur rent (200 mV/div). Load capaci - tance: 5 ceramic 22 µF capacitors. Bandwidth: 20 MHz. See Figure 17. -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 Hz Forward Transmission (dB) 0.7 Vout

1.8 Vout

5.0 Vout

Figure 15: Magnitude of incremental forward transmission (FT = vout/vin) for minimum, nominal, and maximum input voltage at full rated power. 0.5 0.6 0.7 0.8 0.9 1.0 1.1 0 4 8 12 16 20 Load Current (A) Normalized Output Voltage (V)

0.7 Vout

0.9 Vout

Figure 16: Output voltage vs. load current showing typical current limit curves and converter shutdown points. Figure 17: External cap shown for transient response measurements. Not shown are PWRGOOD output and digital inputs OE, TRIMN and TRIMP . I/O pin arrangement not intended to match positions on the converter. 0.7Vout 0.9Vout 1.2Vout 1.5Vout 2.5Vout 1.8Vout 5.0Vout 3.3Vout 0.7Vout 0.9Vout 1.2Vout 1.5Vout 2.5Vout 1.8Vout 5.0Vout 3.3Vout 100 200 300 400 500 600 700 800 900 Output Voltage (V) Frequency (Khz) 85ºC 25ºC Figure 18: Typical Switching Frequency vs Output Voltage, 12Vin, Full Rated Load Current.

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 9 Figure 19: Load current (10A/div) as a function of time (500uS/div) when attempting to turn on into a 10 mW short circuit. *-Output voltage setpoint is trimmed to 5.25V for the top trace and 0.7V for the bottom trace.

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 10 BASIC OPERATION AND FEATURES The NiQor series non-isolated converter uses a buck converter that keeps the output voltage constant over variations in line, load, and temperature. The NiQor modules employ synchronous rectification for very high efficiency. Dissipation throughout the converter is so low that it does not require a heatsink or metal baseplate for operation. The NiQor converter can thus be built more simply and reliably using high yield surface mount techniques on a single PCB substrate. CONTROL FEATURES Remote ON/OFF (OE, pin 2): The OE (output enable) input, pin 2, permits the user to control when the converter is on or off. The OE pin connects directly to the enable pin of the PWM chip and must be pulled high to turn the converter on (see the speci - fication pages for on/off logic thresholds). The converter has an internal 332K resistor from this pin to CTRL GND (pin 1). PROTECTION FEATURES Input Under-Voltage Lockout : The converter is designed to turn off when the input voltage is too low. When the input voltage is rising, it must exceed the typical Turn-On Voltage Threshold value (listed on the specification pages ) 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 con - verter will turn off. Output Current Limiting : This converter employs foldback cur- rent limiting. A typical output voltage-current curve is shown in Figure 16 in the Performance Curves section. At room tempera- ture current limit is reached at about 170% of rated current. Loads in excess of that limit will cause the output to droop. If the load is sufficient to pull the output down to approximately 50% of its nominal setpoint, the output current will begin to foldback. If the load continues to increase, the output current will decrease lin- early to about 30% of the rated current at zero Vout. While oper- ating into this dead short condition the unit will deliver 2-3A indef- initely reducing stress and ensuring prolonged short-circuits will not overheat the conver ter. Since there is no "hiccup mode" to the current-limit operation, there is also no concern with operation or startup into large capacitive loads. The voltage may rise slowly while charging the output capacitance, but it will rise. There are also no problems starting into a load that has a resis- tive V-I curve. As long as the load draws less than the current limit value at 1/2 of the unit's setpoint voltage, proper startup is ensured. Because the current limit tolerance is rather large, a fuse is rec- ommended in series with the input source of each unit. The rat- ing of the fuse should be above but as close as possible to the maximum input current specified on the specification pages These maximum input currents account for full load conditions, maximum ambient temperature, and minimum input voltage. The curves for power dissipation vs load current may be used to esti- mate the reduction of input current at lighter load conditions. APPLICATION CONSIDERATIONS Input Over-Voltage Prevention : The power system designer must take precautions to prevent damaging the NiQor converters by input overvoltage. This is another reason to be careful about damping the input filter so that no ringing occurs from an under - damped filter. The voltage must be prevented from exceeding the absolute maximum voltage indicated in the Electrical Specifications section of the data sheet under all conditions of turn-on, turn-off and load transients and fault conditions. The power source should have an over voltage shutdown threshold as close as reasonably possible to the operating point. External Output Capacitance: This converter is designed to operate with all-ceramic output capacitance. Although addition- al bulk output capacitance of other types may be found to improve performance, the output capacitance recommendations are generally based on low-ESR ceramic capacitors. A minimum of 110uF of ceramic capacitance should be placed as close as possible to the converter and preferably mounted directly under the converter on the opposite side of the converter with VOUT and PWR GND planes used to minimize the inductance of this con- nection. In order to maintain the desired capacitance up to high- er output voltages, 5 22uF/1210 capacitors are recommended. To achieve the transient response specifications, 376uF is recom- mended. When operating the QS1 or QS2 version at light loads (see CCM vs DCM section), even more capacitance may be desired to reduce the output ripple voltage. Due to the low-fre- quency content of the discontinuous mode output voltage ripple, tantalum or polymer type capacitors may also be useful in reduc- ing this ripple. In general, more capacitance is needed, particu- larly at high voltages, when using 100uF 1210 6.3V capacitors or other low voltage X5R capacitors which can similarly drop to 1/3 of their nominal value at a bias voltage of 5V .

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 11 Continuous vs Discontinuous Conduction Modes: Table 1 summarizes the difference among the converter versions. Referring to the last 3 digits of the part number, the QS1 and QS2 versions are configured to enable discontinuous conduction mode (DCM) operation at light loads, whereas the QS3 and QS4 ver- sions force continuous conduction mode (CCM) operation. Table 2 shows the typical load current corresponding to the boundary for light-load discontinuous operation. Following are the main performance differences between the two versions: 1) Current-sinking: A DCM version (QS1, QS2) will not sink cur- rent if its output is backdriven, whereas a CCM version will sink current as needed to regulate its output voltage, though such neg- ative current might be limited to a few amps but may exceed 10Amps. Since this is not a normal operating condition, the neg- ative current limit is not specified. 2) Light-load input power: The main advantage of DCM opera - tion is lower input current at light loads, down to only about 4 mil- liamps with no-load (for all input/output voltage conditions). The efficiency improvement of the DCM version only becomes evident as the load is reduced below 1.5A for a 5.0V output. This thresh- old gradually falls to about 1 Amp at 2.5V and 0.75A at 0.7V , as shown in Table 2 below. 3) Light-load output ripple: The output ripple of the DCM version has a higher amplitude, as well as a significant amount of low-fre- quency content at light loads (as low as 200Hz for 0.7Vout at no- load). With the same output capacitance, peak-to-peak output voltage ripple at light-loads may be 3 to 10 times as large for DCM as for the CCM version. At heavier loads, all versions oper- ate in continuous conduction and have very low output voltage ripple. 4) Transient response: The CCM version has a better response to dynamic loads. The output voltage deviation, while excellent on both versions, is about 20% lower on the CCM version. With a falling load step, a longer settling time may also be noticeable, especially when stepping into very light loads, as there is no cur - rent sinking capability to quickly reduce the output voltage from its peak deviation. 5) No-Load Regulation: When operating in discontinuous mode with extremely light loads (<50mA), the output voltage may rise by 1 to 2% beyond the specified tolerance. Setting Output Voltage (VADJ, pin 11): This converter is a wide-output module and requires external resistors R 1 and R2 (see Figure 17) to set the output voltage. The output voltage is set by the ratio between R 1 and R 2 in parallel with an internal 100K resistor as follows: where Vref is given in Table 1 above. In terms of the top resistor R2, the trim equation is: The recommended value for bottom resistor R 1 is 1.0K. Significantly larger values of R 1 will degrade the DC accuracy of the remote sensing, particularly with high output voltages where the trim resistor R 2 becomes comparable to the internal 100K par- allel resistor. If remote sensing is not used, larger values of R 1 up to 5.0K may be used. Total DC Variation of Vout: For the converter to meet its spec - ifications, the maximum variation of the DC value of the conver t- er output voltage, due to voltage adjustment, margining, and remote load voltage drops, should not be greater than that spec - ified for the output voltage trim range. Differential Remote Sense: Using the differential remote sense feature, the converter can be configured to adjust its output voltage up to compensate for resistive drops between the con- verter and the load. Differential remote sensing is achieved by a Kelvin connection of the top trim resistor R 2 (see Figure 17 ) and the CTRL GND pin respectively to the Vout and common rails at the desired remote location. The other end of R 2 connects to the VADJ pin, and the bottom trim resistor R 1 connects between the Output Voltage Setpoint Boundary Current for Output Ripple Efficiency Advantage Boundary Current 0.7V - 1.8V 2.0 Amps 0.75Amps 2.5V 2.2 Amps 1.0 Amps 3.3V 2.4 Amps 1.2 Amps 5.0V 2.6 Amps 1.5 Amps Version Vref Light-Load Operating Mode QS1 0.7V Discontinuous (DCM) Enabled QS2 VSET pin Discontinuous (DCM) Enabled QS3 VSET pin Forced Continuous (CCM) QS4 0.6V Forced Continuous (CCM) Table 1: Version differences Table 2: Boundary currents below which DCM operation increases ripple and improves efficiency R2 = (Vout - Vref) * R1 * 100K Vref * (R1 + 100K) - V out * R1 Vout = Vref * [1 + (R2 || 100K) / R 1] With R1=1K R 2 (in kohm) = (Vout - Vref) * 100 101 * Vref - Vout

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 12 VADJ and CTRL GND pins. The R1 connection should be between the pin and the point where the CTRL GND and PWR GND nodes meet. In cases where the output voltage is not trimmed above the reference voltage (R 2 < 50 W), it should be noted that the trim con- nection would be substantially used for high-frequency feedback as well as DC sensing, so the feedback loop would see any fil- tering network including parasitic inductance between the output pins and the remote sense point. When using the remote sensing to compensate for a substantial voltage drop on the VOUT rail between converter and load (i.e., more than 1% of output voltage), the load voltage accuracy can be impacted by the internal 100K resistor between the VOUT and VADJ pins, especially at higher output voltage trim settings, where the trimming resistor R 2 connected to the remote sense load starts to become a significant fraction of the 100K resistor. The follow - ing equation for the load voltage adjusts for this effect: Where Vdrop is the difference between the output voltage at the converter pin and the load voltage (both measured with respect to the CTRL GND pin.) Internal vs External Reference: The QS1 version uses an internal reference to maintain 0.7V at the VADJ pin during normal steady-state operating conditions. The QS4 also uses an internal reference, but maintains 0.6V at the VADJ pin. The QS2 and the QS3 are configured to use an external reference voltage applied at the VSET pin. The converter will maintain this voltage, which may be between 0.7V and 1.0V, at the VADJ pin during normal steady-state operating conditions. Under no conditions should the VSET pin be driven above the absolute maximum voltage of 2.7V. Margining: With the QS1 and QS4 versions, the converter out- put voltage can be margined up or down by 5% by applying a logic-high voltage to the TRIMP and TRIMN pins. The table below summarizes the margining operation. There is an internal 50K resistor to ground at each of these pins. The logic threshold is about 1.4V, and the pins should be driven no higher than 5V. When using the QS2 or QS3 versions, the TRIMP and TRIMN pins should be connected to the CTRL GND pin. 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 available as 6/6 RoHS com- pliant. 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. SURFACE MOUNT INFORMATION PCB Layout Considerations: SynQor recommends that the customer use a non-solder mask defined pad design. The mini- mum recommended pad size is 0.074" x 0.122" (1.88mm x 3.1mm) and the maximum pad size is 0.095" x 0.140" (2.41mm x 3.56mm), see the mechanical diagram on page 2. Interconnection to internal power planes is typically required. This can be accomplished by placing a number of vias between the SMT pad and the relevant plane. The number and location of the vias should be determined based on electrical resistance, cur- rent and thermal requirements. "Via-in-pad" design should be avoided in the SMT pads. Solder mask should be used to elimi- nate solder wicking into the vias. Pick and Place: The NiQor surface mount modules are designed for automated assembly using standard SMT pick and place equipment. The modules have a centrally located inductor component with a flat surface area to be used for component pick-up. The units use open frame construction and have a low mass that is within the capability of standard pick and place equipment. Those modules however have a larger mass than most conventional SMT components and so variables such as noz- zle size, tip style, handling speed, and placement pressure should be optimized for best results. A conformal tipped placement noz- zle design is recommended. Coplanarity of better than 0.004" (0.1mm) is achieved through the SMT NiQor's terminal design. Reflow Soldering Guidelines: Figure J shows a typical reflow profile for a eutectic solder process. Due to variations in customer applications, materials and processes, it is not feasible for SynQor to recommend a specific reflow profile. The customer should use this profile as a guideline only. Since the NiQor sur- face mount modules have a larger thermal mass and lower ther- mal resistance than standard SMT components, it may be neces- sary to optimize the solder reflow profile based on limitations of the other components on the customer board. Sufficient reflow time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. The solder reflow profile should be confirmed by accurately measuring the SMT interconnect leads. The guidelines illustrated in Figure J must be observed to ensure the maximum case temperature of 260°C (exposure for 5 seconds or less) is not exceeded for the NiQor units. Vload = Vref * [1 + (R2 || 100K) / R1] - Vdrop * [R2 / (R2 + 100K)] TRIMP pin TRIMN pin Mode Low/Open Low/Open No Margining High Low/Open +5% Low/Open High -5% High High No Margining

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 13 Lead-Free Soldering: These NiQor surface mount modules are manufactured with lead free solder and PCB finish and meet the conditions for Lead-Free Class 3 status. Users who wish to assemble the modules in a Lead-Free solder process may require peak reflow temperatures exceeding 240°C. The maximum allowable case temperature of the surface mount NiQor modules is 260°C for no greater than 5 sec- onds. Moisture Sensitivity: These NiQor surface mount modules have an MSL rating 1 per IPC/JEDEC J-STD-033A. Cleaning and Drying: When possible, a no- clean solder paste system should be used to sol- der the NiQor SMT units to their application board. The modules are suitable for aqueous washing, however, the user must ensure suffi- cient drying to remove all water from the con- verter before powering up. Inadequate cleaning and drying can affect the reliability of the converter and the testing of the final assembly. Tape & Reel Packaging: The NiQor SMT modules are sup- plied in tape and reel packaging in quantities of 300 units per reel. Packaging conforms to EIA-481 standards. Tape and reel dimensions are shown in the diagram below . 2 to 4 min. Maximum Temperature (+210-260oC) Eutectic Solder Melting Point (+183oC) (+150-155oC) Pre-heat Soak Reflow Cool Down

• < 2.5oC/sec
• 0.5-0.6oC/sec
• 60 to 90 sec., typ., 2 min max
• 1.3-1.6oC/sec
• 30 to 60 sec., typ., 90 sec max Figure J: Typical Eutectic (96.5Sn/3.0Ag/0.5Cu) Solder Pr ofile 330 mm (13”) diameter reel thermally sealed cover tape Reel View Direction of feed Pin 1 location Trailer: 160 mm min. Leader: 400 mm min. 44 mm 16 mm Tape View carrier tape

Input:Input: Outputs:Outputs: Current:Current: PPackage:ackage: 10.2 - 13.2V10.2 - 13.2V 7A7A SMTSMTTTechnical Sechnical Specificationpecification Product # NQ10W50PKA07 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2NS2T5N Rev. B 6/12/07 Page 14 PART NUMBERING SYSTEM The part numbering system for SynQor’s NiQor DC/DC con- verters follows the format shown in the example below. The first 12 characters comprise the base part number and the next 3 characters indicate available options. A “-G” suffix indicates the product is 6/6 RoHS compliant. Application Notes A variety of application notes and technical white papers can be downloaded in pdf format from our website

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, the next 3 characters for options. A “-G” suffix indicates the product is 6/6 RoHS compliant. The following option choices must be included in place of the x & z spaces in the model numbers listed above. NQ 10 W50 P K A 07 Q S 1 Product Family Packaging (see Ordering Information) Performance Level Thermal Design Output Current Input Voltage Output Voltage Input Voltage Output Voltage Max Output CurrentModel Number Packaging: p 1 - Internal 0.7V Reference & Margining (DCM version) 2 - External Reference & Variable Margining (DCM version) 3 - External Reference & Variable Margining (CCM version) 4 - Internal 0.6V Reference & Variable Margining (CCM version) S - SMTQ - PositiveP - 0.4"x0.9" Surface Mount Options Description: x y z Packaging Enable Logic Pin Style Feature Set Options (see Ordering Information) 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. Contact SynQor for further information: Phone: 978-849-0600 Toll Free: 888-567-9596 Fax: 978-849-0602 E-mail: power@synqor .com Web: www .synqor.com Address: 155 Swanson Road Boxborough, MA 01719 USA PATENTS (additional patent applications may be filed) SynQor holds the following patents, one or more of which might apply to this product: 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