Technical Specification NQ20x20ETC20 9 - 20 V 0 - 20 V 20 A Non- Eighth-brick Continuous Input Outputs Current Isolated DC-DC Converter The NiQor® eighth-brick dc-dc converter is a non-isolated buck-boost regulator, which employs synchronous rectification to achieve extremely high conversion efficiency. Non-Isolated 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). Operational Features • Ultra high efficiency, up to 95% • Delivers up to 20 A of output current • Input Voltage Range: 9 - 20 V • Output voltage range: 0 - 20 V (negative output is possible) • Extensive on-board input and output filtering • No minimum load requirement means no preload resistors required • Buck or buck-boost mode available • Adjustable current limit with current monitor (C option) Mechanical Features • Industry standard eighth-brick pin-out configuration • Size: 0.99" x 2.39" (25x60.6 mm) • Total height only 0.50" (12.7 mm) • Total weight: 1.7 oz (48 grams) NiQor eighth-brick module Protection Features • 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 Safety Features • UL/cUL 60950-1 recognized (US & Canada) • TUV certified to EN60950-1 • Board and plastic components meet UL94V-0 flammability requirements Control Features • On/Off control • Output voltage trim permits custom voltages • Remote Sense (S option, standard) • Current limit trim (C option) Product # NQ20x20ETC20 Phone 1-888-567-9596 www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 1 9 - 20 V 0 - 20 V 20 A Eighth-brick Input: Outputs: Current: Package: Technical Specification MECHANICALDIAGRAM 0.99 (25) 0.600 (15.24) 0.450 (11.43) 0.300 (7.62) 0.500 ±0.025 (12 ±0.63) 0.150 (3.81) Overall height 8 7 6 5 4 2.39 (60.6) 2.00 (50.8) Side View Top View 0.145 0.18 (4.6) 1 2 (3.68) 3 0.19 (4.9) 0.020 ±0.010 (0.51 ±0.25) 0.300 (7.62) 0.600 (15.24) Bottom side Clearance NOTES PIN DESIGNATIONS 1) Pins 1-3, 5-7 are 0.040" (1.02 mm) diameter. with 0.080" (2.03mm) diameter standoff shoulders. 2) Pins 4 and 8 are 0.062” (1.57 mm) diameter with 0.100" (2.54 mm) diameter standoff shoulders. 3) Other pin extension lengths available. 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 are shown for visual reference only. 6) All dimensions in inches (mm) Tolerances: x.xx ±0.02" (x.x ±0.5 mm) x.xxx ±0.010” (x.xx ±0.25 mm) 7) Weight: 1.7 oz (48 g) typical 8) Workmanship: Meets or exceeds IPC-A-610C Class II Pin No. Name Function 1 Vin(+) Positive input voltage 2 ON/OFF TTL input to turn converter on and off, referenced to Vin(-), with internal pull up 3 Vin(-) Negative input voltage, internal short to Pin 4 4 Vout(-) Negative output voltage, internal short to Pin 3 5 6 7 8 SENSE(-) ITRIM VTRIM SENSE(+) IMON Vout(+) Negative remote sense1 (S option) Current limit trim (C option) Output voltage trim Positive remote sense2 (S option) Current monitor output (C option) Positive output voltage Notes: 1. SENSE(–) should be connected to Vout(–) either remotely or at the converter. 2. SENSE(+) should be connected to Vout(+) either remotely or at the converter. Product # NQ20x20ETC20 Phone 1-888-567-9596 www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 2 9 - 20 V 0 - 20 V 20 A Eighth-brick Input: Outputs: Current: Package: Technical Specification NQ20x20ETC20 ELECTRICAL CHARACTERISTICS Ta = 25 °C, airflow rate = 300 LFM, Vin = 12 V dc unless otherwise noted; full operating temperature range is -40 °C to +105 °C ambient 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 Vout Min. All All All All 0 Typ. -55 0 Max. Units Notes & Conditions 30 20 125 5.5 V V °C V Continuous Continuous 20 25 20 V A A µF V A Turn on at 10V Fast blow external fuse recommended Input current max equals output rated current ESR < 1.5 Ω RECOMMENDED OPERATING CONDITIONS Input Voltage Range Input Fuse Rating All All 9 All All All 100 0 0 All All All All 12 24 48 All All 9.2 8.1 All All 0 0 All 3.3 5 20 All All ±160 mV ±4%*Vout 10 20 40 24 0 5000 mV mV mV A µF All All All 1.25 1.83 10 V V kΩ All All All All All 0.12 2.12 10.2 2.5 2 V V kΩ V µA 125 125 100 °C °C °C 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 Total Output Voltage Range Output Voltage Ripple and Noise (pk-pk/36Vin) “ “ Output DC Over Current limit External Output Capacitance C Option: Isense voltage No load Full load Output resistance of Isense C Option: Itrim voltage Voltage at no load Voltage at maximum load Pull-Up Resistance of Itrim Pin Pull-Up Voltage C Option: Reverse Current TEMP LIMITS FOR POWER DERATING Semiconductor Junction Temperature Board Temperature Baseplate Temperature EFFICIENCY 100% Load; 12 Vin “ ; 48 Vin “ ; 24 Vin 50% Load; 12 Vin “ ; 48 Vin “ ; 24 Vin Product # NQ20x20ETC20 20 20 9.5 8.5 1.0 24 115 120 175 80 20\1.1\60 All All All 3.3 5 20 3.3 5 20 Phone 1-888-567-9596 83 88 94 88 91 95 www.synqor.com 10 8.9 V V V A mA mA mA mA µF\µH\µF 20 20 V A % % % % % % Output voltage dependent Set output by Rtrim resistor Sense pin, over sample, line, load, temp. & life 10 Vin Full Load; 100uF; 20 MHz b.w. " Effective on input, output condition ESR > 1 mΩ 20 A load 20 A load Enabled or Disabled Package rated to 150 °C ULrated max operating temp 130 °C W mode only W mode only Doc.# 005-NS2020W Rev. C 03/06/09 Page 3 Input: Outputs: Current: Package: Technical Specification 9 - 20 V 0 - 20 V 20 A Eighth-brick NQ20x20ETC20 ELECTRICAL CHARACTERISTICS (Continued) Ta = 25 °C, airflow rate = 300 LFM, Vin = 12 V dc unless otherwise noted; full operating temperature range is -40 °C to +105 °C ambient temperature with appropriate power derating. Specifications subject to change without notice. Parameter Vout Min. Typ. Max. Units Notes & Conditions DYNAMIC CHARACTERISTICS Output Voltage during Current Transient For a Step Change in Output Current Settling Time Turn on Transient Startup delay Rise Rate Output Voltage Overshoot FEATURE CHARACTERISTICS Switching Frequency ON/OFF Control Negative Logic (N) ON/OFF Control Off-State Voltage On-State Voltage Pull-Up Voltage Pull-Up Resistance Output Voltage Trim Range Input/Output Over-Voltage Protection Over-Temperature Shutdown Over-Temperature Shutdown Restart Hysteresis RELIABILITY CHARACTERISTICS Calculated MTBF (TR-NWT-000332; Telcordia) Calculated MTBF (MIL-HDBK-217F; MIL-217) Field Demonstrated MTBF All 1 V All 5 ms All All All 2 0.2 0 ms V/ms V 260 kHz 3.3 0.8 V V V kΩ V V °C °C All 240 All All All All All All All All 1.8 0 All All All 250 3.3 10 0 22 24 115 15 20 25 TBD TBD (0.1 A/µs); 50%-75%-50% Iout max To within 1.5% Vout nom. Resistive load " " Measured Vout+ to common pins Over full temp range Average PCB Temperature 106 Hrs. 100% load, 200LFM, 40 °C Ta 106 Hrs. 100% load, 200LFM, 40 °C Ta 106 Hrs. See our website for details STANDARDS COMPLIANCE Parameter Notes & Conditions STANDARDS COMPLIANCE UL/cUL 60950-1 Pending UL Approval File # E194341 EN60950-1 Certified by TUV Needle Flame Test (IEC 695-2-2) Test on entire assembly; board & plastic components UL94V-0 compliant IEC 61000-4-2 ESD test, 8 kV - NP, 15 kV air - NP (Normal Performance) GR-1089-CORE Section 7 - electrical safety, Section 9 - bonding/grounding Telcordia (Bellcore) GR-513 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 Parameter # Units Test Conditions QUALIFICATION TESTING Life Test 32 95% rated Vin and load, units at derating point, 1000 hours Vibration 5 10-55 Hz 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 Toperating = min to max, Vin = min to max, full load, 100 cycles Design Marginality 5 Tmin-10 °C to Tmax+10 °C, 5 °C steps, Vin = min to max, 0-105% load Humidity 5 85 °C, 85% RH, 1000 hours, continuous Vin applied except 5 min/day Solderability 15 pins MIL-STD-883, method 2003 Note: Extensive characterization testing of all SynQor products and manufacturing processes is performed to ensure that we supply robust, reliable product. Contact the factory for official product family qualification documents. Product # NQ20x20ETC20 Phone 1-888-567-9596 www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 4 Technical Specification 100 20 12Vin 20Vout 12Vin 5Vout 12Vin 3.3Vout 20Vin 12Vout 20Vin 5Vout 20Vin 3.3Vout Power Dissipation (W) 95 90 Efficiency (%) 9 - 20 V 0 - 20 V 20 A Eighth-brick Input: Outputs: Current: Package: 85 80 12Vin 20Vout 12Vin 5Vout 12Vin 3.3Vout 20Vin 12Vout 20Vin 5Vout 20Vin 3.3Vout 75 70 65 60 15 10 5 0 0 4 8 12 16 20 0 4 8 12 16 20 Load Current (A) Load Current (A) Figure 1: Efficiency at different output voltage vs. load current for different input voltage at 25 °C. Figure 2: Power dissipation at different output voltage vs. load current for different input voltage at 25 °C. 21 1 µH Derated Output Current (A) 18 See Fig. 5 source impedance 15 12 iS 9 See Fig. 6 iC Tb=80 C; Vout=5 V Tb=100 C; Vout=5 V 6 VSOURCE Tb=80 C; Vout=12 V Tb=100 C; Vout=12 V 3 VIN Dc-dc Converter C* 100 µF 100mW ESR Tb=80 C; Vout=20 V tantalum capacitor Tb=100 C; Vout=20 V 0 8 10 12 14 16 Input Voltage (V) 18 * See values for recommended external input capacitance. Inductor optional as needed. 20 Figure 3: Maximum output power derating curve with a controlled baseplate temperature of 80ºC and 100ºC. VOUT Figure 4: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 5), and Output Voltage Ripple (Figure 6). 20 Vout 20 Vout 12 Vout 12 Vout 5.0 Vout 5.0 Vout 3.3 Vout 3.3 Vout Figure 5: Input Terminal Ripple Current at 10 V input voltage and rated load current (500 mA/div). Bandwidth: 20 MHz. See Figure 4. Product # NQ20x20ETC20 Phone 1-888-567-9596 Figure 6: Output Voltage Ripple at 10 V input voltage and rated load current (20mV/div). Zero load capacitance. Bandwidth: 20 MHz. See Figure 4. www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 5 Input: Outputs: Current: Package: Technical Specification 9 - 20 V 0 - 20 V 20 A Eighth-brick 20 Vout 20 Vout 12 Vout 12 Vout 5.0 Vout 3.3 Vout 5.0 Vout 3.3 Vout ON/OFF ON/OFF Figure 7: Turn-on transient at zero load (50 ms/div). ON/OFF input (5 V/div) Ch 1-4: Vout (5 V/div) Figure 8: Turn-on transient at full load (50 ms/div). ON/OFF input (5 V/div) Ch 1-4: Vout (5 V/div) 1.9 2.5 1.8 2.0 Itrim (V) IMON (V) 1.7 1.6 1.5 1.5 1.0 1.4 0.5 1.3 1.2 0.0 0 5 10 15 20 0 Load (A) 5 10 15 20 25 Current Limit (A) Figure 9: Imon pin voltage vs. load current at 16 V input and 13.8 V output. Load capacitance: 100µF electrolytic cap. C option only. Figure 10: Current limit vs. Itrim pin voltage with 16 V input and 13.8 V output. Load capacitance: 100µF electrolytic cap. C option only. 20 Vout 12 Vout 5.0 Vout 3.3 Vout Figure 11: Output voltage response for 3.3 V, 5 V, 12 V, 20 V units to step‑change in load current (50-75-50% of Iout max; di/dt=0.1A/µs). Load cap: 100µF, 100mW ESR tant, Ch 1-4: Vout (1 V/div);(5ms/div). Product # NQ20x20ETC20 Phone 1-888-567-9596 www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 6 Input: Outputs: Current: Package: Technical Specification BASIC OPERATION AND FEATURES These converters use a digital controller for the buck stage and boost stage (see Figure A). It automatically changes operating mode (buck mode or boost) when the line voltage or output set point changes. Both stages are accomplished with synchronous rectifiers. Very high efficiency is maintained over wide input and output ranges by shifting operational modes and use of synchronous rectifiers. Vin+ Linput Cin1 GATE_Q1 Q1 GATE_Q3 Q3 JUMPER L Cin2 GATE_Q2 Q2 GATE_Q4 Loutput Cout1 Q4 Vin- Vout- W mode: Q3, Q4 are populated, Jumper is open. T mode: Q3, Q4 are open, Jumper is populated. The converter runs at a fixed frequency with a predictable EMI performance. This series of quarter-brick and eighth-brick converters use the industry standard footprint and pin-out configuration. CONTROL FEATURES REMOTE ON/OFF: The ON/OFF input permits the user to control when the converter is on or off. Only Negative ON/OFF logic is available in this power module series. Negative logic ON/OFF signal turns the module OFF during logic high (leave the pin floating or set voltage between 1.8~3.3 V) and turns the module ON during logic low [tie to Vin(-)]. OUTPUT VOLTAGE TRIM: The output voltage can be programmed to any voltage between 0 V dc and Vmax by connecting one resistor between the Pin 6 (TRIM) pin and Pin 5 [Sense(-)]. For a desired output voltage, the value of the resistor should be: [( V(pin6) = 2.366 – 2.180 2.314 where: ( ) Vout Vmax Vout = desired output voltage Vmax = maximum rated output voltage To maintain the accuracy of the output voltage over load current, it is vital that any trim-up resistor be terminated directly to the converter’s Sense(-) pin (S option) or Vout(-) pin (C option), not at the connection to the load. A separate Kelvin connection to the PCB pad for the Vout(-) is optimal. PROTECTION FEATURES Figure A: Topology Rtrim-up(Vout) = Alternatively, the TRIM pin can be driven from an external voltage source: Vout+ Cout2 9 - 20 V 0 - 20 V 20 A Eighth-brick 11830 x Vmax 12465 Vout + .0569 0.058 x Vmax Product # NQ20x20ETC20 ) ] _ 10912 Phone 1-888-567-9596 (Ω) 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 Shutdown: To provide protection in an output short condition, the unit is equipped with internal short circuit protection. When the short protection is triggered, the unit shutdowns first. After approximately 16 ms inhibit time, the units turn on again. If the short condition remains, the current limit circuit will limit the output current. The units operate normally once the fault condition is removed. Internal Over-Voltage Protection: To fully protect from excessive output voltage, the output over-voltage shutdown circuitry is contained. This OVP is independent of the trimmed set point. The shutdown point is fixed on the standard option. 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. www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 7 Technical Specification APPLICATION CONSIDERATIONS Limited output voltage resolution: The internal voltage control feedback loop has limited resolution. Therefore, the output voltage will exhibit discrete steps as the loop responds to changes in line, load, trim, or remote sense. For instance, on close examination, the startup ramp has a “stair-step” shape. Likewise, a load transient response will be composed of multiple discrete steps. 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 capacitance must be placed directly adjacent to the input pin of the module, to minimize input ripple voltage and ensure module stability. Output capacitance: For stable operation of the module, there is no extra external capacitor required. To reduce the output ripple and improve dynamic response to a step load change, additional capacitance at the output can be used. Low ESR polymer and ceramic capacitors are recommended to improve the dynamic response of the module. In many applications, however, additional external output capacitance is a requirement which will cause the startup time to change. Remote sense (S option): Vout remote sensing is provided to achieve proper regulation at the load points and reduce effects of distribution losses on output line. In the event of an open remote sense line, the module shall maintain local sense regulation through an internal resistor. The module shall correct for a total of 10% Vout. Current limit: Available power is limited by output current in buck mode (Vin>Vout), but by input current in boost mode (Vin<Vout). for Vin >Vout, Ilimit = 1.2 x Imax Vin+ 1 Cin1 Vin-/ Vout+ Cin2 Vout+ SENSE+ 2 ENABLE TRIM Dc/dc SENSE3 Vin- converter VoutVin+ 8 7 6 5 4 Cout1 Rtrim-up Vout- Figure B: Negative output setup Using this negative output setup impacts the available output voltage range and current limit. The output voltage range becomes 0 to Vmax - Vin, and the current limit is scaled by: V in (Vin + Vout) Current monitor/trimmable current limit (C option): In addition to voltage trim, the C option offers an adjustable current limit input and a current monitor output. The C option also includes an ideal diode circuit in series with the Vout+ pin that prevents reverse current flow. This enables applications such as battery charging, current sharing, and current read back. Dc/dc converter Vin+ 1 Cin Vin+ 2 ENABLE Vin- 3 Vin- Vout+ 8 IMON 7 VTRIM 6 ITRIM 5 Vout- 4 Vout+ IMON Cout RadjIlim Rtrim-up Vout- Figure C: Current monitor/trimmable current limit setup Ilimit = 1.2 x Imax for Vin < Vout, 9 - 20 V 0 - 20 V 20 A Eighth-brick Input: Outputs: Current: Package: The Rtrim-up resistor increases the output voltage, identical in function to the S option. ( ) Vin The RadjItrim resistor reduces the output current limit, according to the following equation: Vout where Imax = Maximum rated output current RadjItrim = Negative output: This series of converters can be set to negative output (see Figure B). [( 0.0469 Imax + Itrim 1.153 Imax + Itrim ) ] 10200 - 10 (Ω) Alternatively, the Itrim pin can be driven from an external voltage source: V(pin5) = 2.085(Itrim/Imax) + 0.0953 where Itrim is the desired current limit setpoint If Ilimit is less than Itrim, then Ilimit takes precedence. The Imon pin voltage tracks the output current, as shown in figure 10. This pin has a 10kOhm output impedance. Product # NQ20x20ETC20 Phone 1-888-567-9596 www.synqor.com Doc.# 005-NS2020W Rev. C 03/06/09 Page 8 Input: Outputs: Current: Package: Technical Specification 9 - 20 V 0 - 20 V 20 A Eighth-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. NQ2 0 W 2 0 E T C 2 0 N N S - G 6/6 RoHS Options (see Ordering Information) Model Number Input Voltage Output Voltage Max Output Current NQ20w20ETC20xyz-G 9 - 20 V 0 - 20 V 20 A Output Current Thermal Design Performance Level Package Size Output Voltage Mode (see Ordering Information) Input Voltage The following options must be included in place of the x y z spaces in the model numbers listed above. Product Family 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. Mode: w T - Buck W - Buck / Boost 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: Phone: Toll Free: Fax: E-mail: Web: Address: Product # NQ20x20ETC20 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 Options Description: x y z Enable Logic Pin Style Feature Set N - Negative K - 0.110" N - 0.145" R - 0.180" Y - 0.250" S - Standard C - Current monitor output / Trimmable current limit Contact SynQor for C - Feature Set availability. Not all combinations make valid part numbers, please contact SynQor for availability. See the Product Summary web page for more options. 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 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-NS2020W Rev. C 03/06/09 Page 9