The NDS Series of converters are low profile, single output, DC-DC converters intended for SMT placement and reflow soldering. The product provides onboard conversion of standard telecom, datacom, and industrial input voltages to isolated low output voltages. Proprietary patented manufacturing process ensures optimal quality with full process automation. These are high performance, cost effective converters with an extremely small PCB footprint. RoHS-compliant for all six substances Single board design Basic insulation 1500 VDC i/o electric strength test voltage Low profile SMT design High current density Low conducted and radiated EMI Excellent co-planarity (within 0.1 mm) Output overcurrent protection Full output power at 70 °C and 1 m/s airflow Operating temperature up to 100 °C Remote shutdown (primary referenced) Output voltage trim adjust, positive or negative 8.5 mm height profile Safety-approved to IEC/EN 60950-1 and Approved to the following Safety Standards: UL/CSA60950-1, EN60950-1, and IEC60950-1 Distributed power architectures Telecommunications equipment LAN/WAN applications Data processing Industrial applications NDS Series 2 INPUT VOLTAGE VDC INPUT CURRENT, MAX A OUTPUT VOLTAGE V OUTPUT CURRENT A OUTPUT RIPPLE/NOISE, mV P-P TYPICAL EFFICIENCY % NDS03ZE-M6G 36 - 75 0.35 3.3 3.0 75 85 NDS02ZG-M6G 36 - 75 0.35 5.0 2.0 90 87 MODEL Stresses in excess of the absolute maximum ratings may cause performance degradation, adversely affect long term reliability, and cause permanent damage to the converter. All specifications apply over input voltage, output load, and temperature range, unless otherwise noted. PARAMETER CONDITIONS / DESCRIPTION Input Voltage (Vi) Continuous Transient Input Voltage (VIT) Transient, 100 ms Operating Case Temperature (TC) At 100% load Storage Temperature (TS) ON/OFF Control Voltage (VRC) Referenced to -Vi MIN NOM 36 MAX UNITS 75 VDC 100 VDC -40 100 ºC -55 120 °C -1.0 5.5 V MAX UNITS All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted. PARAMETER CONDITIONS / DESCRIPTION MIN NOM Shock IEC68-2-27 100 gn Sinusoidal Vibration IEC68-2-6 10 gn Weight 10 Water Washing Standard process MTBF Per Bellcore TR-NWT-000332 (100% load @25 °C, GB) g Yes N/A 6 052 000 h All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted PARAMETER CONDITIONS / DESCRIPTION MIN NOM MAX UNITS Basic N/A Electric Rating Strength Test Voltage 1500 VDC Insulation Capacitance (Cps) 4100 pF Insulation Safety Vi = 36 – 75 VDC 10 Insulation Resistance (Rps) MΩ All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted PARAMETER CONDITIONS / DESCRIPTION Operating Input Voltage Range (Vi) Continuous Input Current when Shutdown Vi , Remote Control activated Turn-On Input Voltage 36 – 75 Vi Ramping Up, Io max MIN NOM MAX 36 48 75 V 3 6 mA 34 36 V 32 UNITS [email protected] NDS Series Turn-Off Input Voltage 36 – 75 Vi 3 Ramping Down, Io max 30 To Output Regulation Band Turn-On Time After Remote Control Rise Time Input Reflected Ripple Current Vi, Io max 32 34 V 350 1 1 500 5 5 ms ms ms 50 mApp 1.4 μF MAX UNITS 1.0 V Input Capacitance All specifications apply over specified input voltage, output load and temperature range, unless otherwise noted. PARAMETER CONDITIONS / DESCRIPTION MIN NOM Shutdown Control Converter OFF Shutdown pin is pulled low -1.0 Converter ON Voltage source or open circuit 3.5 Sink Current 5.5 0.3 Vi=Vi nom V mA All specifications apply over input voltage, output load and temperature range, unless otherwise noted. PARAMETER CONDITIONS / DESCRIPTION MIN NOM MAX Output Voltage Set Point (Vo) Vi nom, Io = 1.5 A, 25 °C 3.26 3.3 3.34 V Output Current (Io) Vi min to Vi max 3.0 A Line Regulation Vi min to Vi max, 50% Io max 65 mV Load Regulation Vi nom, Io min to Io max 65 mV Dynamic Regulation: 50-100% Io.Max load step Peak Deviation change ±250 mV Settling Time to 1% error band 250 μs 75 mVpp 2200 μF 200 %Iomax 0 Output Ripple and Noise – 20 MHz bandwidth1 (Vr) Vi min to Vi max, Io min to Io max, Admissible Load Capacitance (Co max) Io max, Vi nom Output Current Limit Threshold (IoL) Vo ≤0.90 Vo nom Switching Frequency (fs) Vi nom, Io max 50 120 400 Temperature Coefficient (Tco) Trim Range (Vt) 1 Io min to Io min, Vi min to Vi max 3.0 UNITS kHz 0.02 %Vo/°C 3.6 Vo Measured with a 1 μF ceramic across the output pins Asia-Pacific +86 755 298 85888 Europe, Middle East +353 61 225 977 © 2016 Bel Power Solutions & Protection North America +1 408 785 5200 BCD.00013_AD 17-Oct-2016 NDS Series 4 TYPICAL CHARACTERISTIC CURVES All specifications apply over input voltage, output load and temperature range, unless otherwise noted. PARAMETER CONDITIONS / DESCRIPTION MIN NOM MAX UNITS Output Voltage Set Point (Vo) Vi nom, Io = 1.5 A, 25 °C 4.94 5.0 5.06 V Output Current (Io) Vi min to Vi max 2.0 A Line Regulation Vi min to Vi max, 50% Io max 65 mV Load Regulation Vi nom, Io min to Io max 65 mV Dynamic Regulation: 50-100% Io.Max load step Peak Deviation change ±350 mV Settling Time to 1% error band 250 μs 125 mVpp 2200 μF 200 %Iomax 0 2 Output Ripple and Noise – 20 MHz bandwidth (Vr) Vi min to Vi max, Io min to Io max, Admissible Load Capacitance (Co max) Io max, Vi nom Output Current Limit Threshold (IoL) Vo ≤0.90 Vo nom Switching Frequency (fs) Vi nom, Io max 75 120 400 Temperature Coefficient (Tco) Trim Range (Vt) 2 Io min to Io min, Vi min to Vi max 4.5 kHz 0.02 %Vo/°C 5.5 Vo Measured with a 1 μF ceramic across the output pins [email protected] NDS Series 5 TYPICAL CHARACTERISTIC CURVES This series of converters does not require any external components for proper operation. However, if the distribution of the input voltage to the converter contains significant inductance, a capacitor across the input terminals may be required to stabilize the input voltage. A minimum of 1 μF, quality electrolytic / ceramic capacitor is recommended for this purpose. For output decouplingit is recommend connecting a 1 μF ceramic capacitor directly across the output pins of the converter. 8.1 The remote control pin functions as a normal soft shutdown. It is referenced to the –Vi pin. With positive logic, when the remote control pin is pulled low, the output is turned off and the unit goes into a very low input power mode. An open collector switch is recommended to control the voltage between the remote control pin and the –Vi pin of the converter. The remote control pin is pulled up internally, so no external voltage source is required. The user should avoid connecting a resistor between the remote control pin and the +Vi pin. The user must take care to ensure that the pin reference for the control is connected close to the –Vi pin. The control signal must not be referenced ahead of EMI filtering, or remotely from the unit. If the remote control pin is not used, it can be left floating. 8.2 The converter is designed for natural or forced convection cooling. The output power of the converter is limited by the maximum case temperature (Tc). To ensure reliable long term operation of the converters, and to comply with safety agency requirements, Bel Power Solutions limits max. allowable case temperature (Tc) to 100 °C; see Mech. Drawing. 8.3 Paralleling of two converters is not possible. 8.4 When the output is overloaded above the maximum output current rating, the voltage will start to reduce to maintain the output power to a safe level. In a condition of high overload or short-circuit, where the output voltage is pulled below approximately 30% of Vo.Nom, the unit will enter a ‘Hiccup’ mode of operation. Under this condition the unit will attempt to restart, approximately every 25 ms, until the overload has cleared. Asia-Pacific +86 755 298 85888 Europe, Middle East +353 61 225 977 © 2016 Bel Power Solutions & Protection North America +1 408 785 5200 BCD.00013_AD 17-Oct-2016 NDS Series 6 8.5 The trim feature allows the user for adjusting the output voltage by means of an external resistor. To increase Vo resistor should be connected between pins 12 and 14. To decrease Vo a resistor should be connected between pins 12 and 13. To increase Vo: Rext MODEL (A - (DxVo) (Vo - Vonom) To reduce Vo: Rext [Ω] A B NDS03ZE-M6G 7010 NDS02ZG-M6G 11260 ((B x Vo) - C) (Vonom - Vo) [Ω] C D 3161 7010 1500 4532 11240 1500 Note: When the output voltage is trimmed up, the output power from the converter must not exceed its maximum rating. This is determined by measuring the voltage on the output pins, and multiplying it by the output current. The derating curves below give an indication of the output power achievable with and without forced-air cooling. However in the final application, in order to ensure the reliability of the unit, care must be taken to ensure the maximum case temperature is not exceeded under any conditions. [email protected] NDS Series 7 These converters are tested with 1500 VDC from input to output. The input-to-output resistance is greater than 10 MΩ. These converters are provided with Basic Insulation between input and output. Nevertheless, if the system using the converter needs to receive safety agency approval, certain rules must be followed in the design of the system. In particular, all of the creepage and clearance requirements of the end-use safety requirements must be observed. In order to consider the output of the converter as SELV (Safety Extra Low Voltage) or TNV-1, according to IEC/EN 60950-1 and UL/CSA 60950-1, one of the following requirements must be met in the system design: (i) (ii) (iii) Fuse: The converter has no internal fuse. An external fuse must be provided to protect the system from catastrophic failure. A fuse with a rating not greater than 2.0 A is recommended. The user can select a lower rating fuse based upon the inrush transient and the maximum input current of the converter, which occurs at the minimum input voltage. Both input traces and the chassis ground trace (if applicable) must be capable of conducting a current of 1.5 times the value of the fuse without opening. The fuse must not be placed in the grounded input line, if any. If the voltage source feeding the converter is SELV, TNV-1, or TNV-2, the output is considered SELV and may be grounded or ungrounded. The circuitry of the converter may generate transients, which exceed the input voltage. Even if the input voltage is SELV (<60 V), the components on the primary side of the converter may have to be considered as hazardous. A safety interlock may be needed to prevent the user from accessing the converter while operational. 11.1 The converters meet the requirements class A of IEC/EN 55022 (conducted noise on the input terminals) without any external components. The results for this solution are displayed below. To meet class B, it is necessary to fit a 5 μF ceramic capacitor across the input terminals. 11.2 STANDARD APPLIED STRESS CLASS LEVEL PERFORMANCE CRITERION1 Electrostatic Discharge EN 61000-4-2 2 kV to pins 1 B Electromagnetic Field EN 61000-4-3 3 V/m 2 A Electrical Fast Transient EN 61000-4-4 2000 Vp to input 3 B Conducted Disturbances EN 61000-4-6 3 VAC to input 2 B 1) A: normal operation, no deviation from specification. B: temporary deviation from specification is possible. Asia-Pacific +86 755 298 85888 Europe, Middle East +353 61 225 977 © 2016 Bel Power Solutions & Protection North America +1 408 785 5200 BCD.00013_AD 17-Oct-2016 NDS Series 8 The following soldering instructions must be observed to prevent failure or significant degradation of the module performance. Power Bel Solutions will not honor any warranty claims arising from failure to observe these instructions. The lead-frame is constructed for a high temperature glass filled, UL94 V-0 flame retardant, dually orthophthalate molding compound commonly used for packaging of electronics components. It has passed NASA outgassing tests, and is certified to MIL-M-14. The coefficient of thermal expansion is equivalent to FR4. The gull wing leads are formed to ensure optimal solder join strength and structure. Furthermore they facilitate visual inspection (manual or automatic). The leads are formed from a 97% Cu alloy plated with Ni and matte Sn. This material is commonly used in the manufacture of integrated circuits. It has good corrosion resistance and exhibits the nobility inherent to all high copper alloys. Unlike brasses, this material is essentially immune to stress corrosion cracking. It also exhibits excellent solderability. It is readily wetted by solders and performs well in standard solderability tests. (Dip of Class II or better). The product is manufactured with a patented process, which is fully automated, and ‘in-line’. This ensures that there is no contamination or mechanical stress on the lead-frame so that the co planarity and solderability are maintained. The product is shipped in JEDEC trays to ensure preservation of the co-planarit and enable fully automated assembly in the final application. Mind the marking for pin 1! These products are approved for forced convection reflow soldering only. Products RoHS-compliant for all 6 substances (model designation ending with -M6G) allow for a solder profile with higher temperatures; see tables below. RECOMMENDED REFLOW PROFILE (measured at the leads of the converter) PRE-HEAT RAMP PRE-HEAT SOAKING RAMP TO REFLOW REFLOW COOLING From To Rate From To Time Rate Time above liquids Peak temp. Time within ±5 ºC of peak temp Time to peak Rate ºC ºC ºC/s ºC ºC s ºC s ºC s s ºC/s M6 (Sn-Pb eutectic) 25 150 2 150 183 90-120 2 45 220±5 10 180 3 M6G (lead free) 25 180 2 180 217 90-120 2 45 240±5 10 210 3 PRODUCT WORST CASE REFLOW PARAMETERS FOLLOWING J-STD-020D (measured in the center, on top side of the converter) PRE-HEAT RAMP PRE-HEAT SOAKING RAMP TO REFLOW REFLOW COOLING Rate Max. time above liquids Max. peak temp. Max. time within ±5 ºC of peak temp Max. time to peak Rate From To Rate From To Max. Time ºC ºC ºC/s ºC ºC s ºC s ºC s s ºC/s M6 (Sn-Pb eutectic) 25 150 3 100 150 120 3 45 230 10 360 6 M6G (lead free) 25 180 3 150 200 120 3 45 260 10 480 6 PRODUCT The product is designed with a large flat area in the center of the top surface to serve as a pick up point for automated vacuum pick and place equipment. The ‘open board’ construction of the unit ensures that weight is kept to a minimum. However due to the relatively large size of the component, a large nozzle (>6.0mm, depending on vacuum pressure) is recommended for picking and placing. The unit may also be automatically handled using ‘odd-form’ placement equipment, with mechanical grippers. For this type of equipment the end edges of the device, which have no leads and also feature the greatest dimensional accuracy, should be used as pick-up points. [email protected] NDS Series 9 Dimensions in mm [inches] Dimensions in mm [inches] Asia-Pacific +86 755 298 85888 Europe, Middle East +353 61 225 977 © 2016 Bel Power Solutions & Protection North America +1 408 785 5200 BCD.00013_AD 17-Oct-2016 NDS Series 10 PIN DESIGNATION FUNCTION REFERENCE 1 Shutdown Shutdown control. Pull low to turn unit off Primary 2 -Vi Input voltage return Primary 3 NC No connection Primary 4 No Pin No pin - 5 No pin No pin - 6 No pin No pin - 7 No pin No pin - 8 No pin No pin - 9 NC No connection Secondary 10 NC No connection Secondary 11 NC No connection Secondary 12 Trim Output voltage adjust Secondary 13 +Vo Positive output voltage Secondary 14 -Vo Output voltage return Secondary 15 NC No connection Secondary 16 NC No connection Secondary 17 No pin No pin - 18 No pin No pin - 19 No pin No pin - 20 No pin No pin - 21 No pin No pin - 22 NC No connection Primary 23 +Vi Positive input voltage Primary 24 NC No connection Primary [email protected] NDS Series 11 Dimensions in mm [inches] NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems. TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice. Asia-Pacific +86 755 298 85888 Europe, Middle East +353 61 225 977 © 2016 Bel Power Solutions & Protection North America +1 408 785 5200 BCD.00013_AD 17-Oct-2016