FLT007A0

Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum; 7A Output Current Maximum RoHS Compliant Features Compliant to RoHS EU Directive 2002/95/EC (Z versions) Compatible in a Pb-free or SnPb reflow environment (Z versions) Surface Mount and Through hole versions Common-mode and Differential-mode filtering Small size and low profile 25.4 mm x 25.4 mm x 12.2 mm (1 x 1 x 0.48 in) Same footprint as FLTR75V5 module Applications Distributed power architectures Intermediate bus voltage applications Telecommunications equipment Wireless Base stations Enterprise Networks Industrial equipment Cost efficient open frame design Wide operating temperature range (-40°C to +85°C) Meets the voltage isolation requirements for ETSI 300-132-2 and complies with and is licensed for Basic Insulation rating per EN60950-1 UL* 60950-1 Recognized, CSA† C22.2 No. 60950-103 Certified, and VDE‡ 0805:2001-12 (EN60950-1) Licensed CE mark meets 73/23/EEC and 93/68/EEC directives§ ISO** 9001 and ISO 14001 certified manufacturing facilities Options Surface Mount Interconnect (-SR) Description The FLT007A0 filter module is designed to operate over an input voltage range up to 75Vdc at output currents up to 7A in an ambient temperature of -40ºC to 85ºC. The filter module is optimized for use with dc/dc converter modules, to significantly reduce the conducted differential and common-mode noise returned to the power source. This filter module enables designers to meet the requirements of EMI standards CISPR 22 (EN55022) and FCC Class B by insertion in-line between the power source and the dc/dc converter module. These modules are designed and manufactured to be either surface mounted (-SR version) or through hole mounted on PCBs. * UL is a registered trademark of Underwriters Laboratories, Inc. † ‡ CSA is a registered trademark of Canadian Standards Association. VDE is a trademark of Verband Deutscher Elektrotechniker e.V. ** ISO is a registered trademark of the International Organization of Standards Document No:DS05-028 ver 1.23 PDF name: FLT007A0_FLT007A0-SR_ds.pdf Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect the device reliability. Parameter Input Voltage Continuous Operating Ambient Temperature (see Thermal Considerations section) Storage Temperature I/O to Ground Isolation All All Tstg − -55 − 125 2250 °C Vdc All All VIN TA 0 -40 100 85 Vdc °C Device Symbol Min Max Unit Electrical Specifications Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. Parameter Operating Input Voltage Maximum Input-to-Output Current (VIN= 0 to ViN,max) Resistance per leg All All Imax R 7 25 Adc mΩ Device All Symbol VIN Min 0 Typ 24/48 Max 75 Unit Vdc CAUTION: This power module is not internally fused. An input line fuse must always be used. This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 10 A (see Safety Considerations section). Based on the information provided in this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s data sheet for further information. LINEAGE POWER 2 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Insertion Loss Tables Parameter Common-mode Insertion Loss 50Ω circuit, 500kHz 50Ω circuit, 1MHz 50Ω circuit, 10MHz Differential-mode Insertion Loss 50Ω circuit, 500kHz 50Ω circuit, 1MHz 50Ω circuit, 10MHz All All All 44 60 40 50 66 46 All All All 44 54 44 50 60 50 dB Device Symbol Min Typ Max Unit dB dB dB dB dB General Specifications Parameter Calculated MTBF (VIN= VIN, nom, IO= 0.8IO, max, TA=40°C) Telecordia SR 332 Issue 1: Method 1, case 3 Weight ⎯ Min Typ 22,576,100 7.8 (0.275) ⎯ Max Unit Hours g (oz.) LINEAGE POWER 3 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Characteristic Curves The following figures provide typical characteristics for the FLT007A0 Module. 0 -10 INSERTION LOSS (dB) -20 -30 -40 -50 -60 -70 -80 0.01 INPUT 8 4 N 5 1 ame = 4 8 4 N 5 1 ame = 4 OUTPUT GROUND 0.1 1 10 100 FREQUENCY (MHz) Figure 1. Typical Common-Mode Insertion Loss in a 50Ω circuit. 0 -10 -20 Figure 4. Internal Schematic INSERTION LOSS (dB) -30 -40 -50 -60 -70 -80 -90 -100 0.01 0.1 1 10 100 FREQUENCY (MHz) Figure 2. Typical Differential-Mode Insertion Loss in a 50Ω circuit. 8 OUTPUT CURRENT, Io (A) 7 6 2m/s (400LFM) 1m/s (200LFM) 5 0.5m/s (100LFM) NC 4 20 30 40 50 60 70 O 80 90 AMBIENT TEMPERATURE, TA C Figure 3. Derating Output Current versus Local Ambient Temperature and Airflow. LINEAGE POWER 4 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Application Guidelines Conducted noise on the input power lines can occur as either differential-mode or common-mode noise currents. Differential-mode noise is measured between the two input lines, and is found mostly at the low frequency end of the spectrum. This noise shows up as noise at the fundamental switching frequency and its harmonics. Common-mode noise is measured between the input lines and ground and is mostly broadband noise above 10 MHz. The high-frequency nature of common-mode noise is mostly due to the high-speed switching transitions of power train components. Either or both types of noise may be covered in a specification, as well as a combination of the two. Differential-mode noise is best attenuated using a filter composed of line-to-line capacitors (X caps) and series inductance, provided by either a discrete inductor or the leakage inductance of a commonmode choke. In addition to the differential filtering provided by the filter module, it is recommended that an electrolytic capacitor be located at the converter side of the filter to provide additional attenuation of low-frequency differential noise and to provide a low source impedance for the converter, preventing input filter oscillations and load transient induced input voltage dips. Open-frame DC/DC converter modules and the older metal-cased DC/DC converter modules require slightly different filtering arrangements. The FLT007A0 series of modules are optimized for the newer open-frame series of modules, but can also be used with older metal-case modules. The main differences in filtering recommendations between the two types of modules are in common-mode filtering, as explained below. where the two common-mode capacitors are to be placed is shown in Fig. 6. C2 VI(+) VI(+) VO(+) FILTER MODULE VI(-) CHASSIS GROUND C1 DC/DC CONVERTER MODULE VI(-) VO(-) C3 Figure 5. Schematic diagram showing recommended connection of the FLT007A0 filter module with open-frame DC/DC converter modules. C2 VO+ PLANE VIN+ VIN+ VI+ V O+ Input FLT007A0 MODULE GND VIN− V O+ C1 DC/DC CONVERTER Load V O− VIN− CHASSIS GROUND VI− V O− VO− PLANE C3 Figure 6. Diagram showing recommended layout of the FLT007A0 filter module with openframe DC/DC converter modules. Filtering Metal-Case DC/DC Converter Modules For metal-case DC/DC converter modules with a case pin, a different filtering arrangement and layout is recommended. Figure 7 shows the schematic diagram of the recommended circuit. The main difference with open-frame module is the use of an isolated shield plane located underneath the module which is connected through capacitors C2 through C5 to the input and output connections of the module. The shield plane along with the case of the module serves as a Faraday shield helping reduce EMI. The corresponding layout for metal-case modules is shown in Fig. 8. Filtering Open-Frame DC/DC Converter Modules For filtering open-frame DC/DC converter modules, the recommended circuit is shown in Fig. 5. In addition to the input electrolytic filter capacitor C1 (recommended value is a minimum of 100uF and approximately 1uF/W at power levels above 100W), common-mode filtering capacitors C2 and C3 should be connected between the input and outputs as shown. Suitable values for common-mode capacitors C2 and C3 are in the range between 1000pF to 0.1μF are usually indicated in the DC/DC converter data sheet. These capacitors need to be rated for the isolation voltage desired between the input and output sides of the DC/DC converter module. The recommended power layout of the modules showing LINEAGE POWER 5 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Level 80 [dBµV] VI(+) VI(+) VO(+) 70 60 50 40 30 FILTER MODULE VI(-) C1 DC/DC CONVERTER MODULE VI(-) CASE VO(-) CHASSIS GROUND C2 C3 C4 C5 20 10 SHIELD PLANE 0 150k 300k 500k Figure 7. . Schematic diagram showing recommended connection of the FLT007A0 filter module with metal-cased DC/DC converter modules. C2 VIN+ VI+ VIN+ VO + 1M 2M 3M 4M 5M Frequency [Hz] 7M 10M 30M Figure 9. Experimental results showing conducted EMI measured using a FLT007A0 module with a QBE025A0B1 DC/DC converter. C4 VO+ Input FLT007A0 MODULE GND VIN− VO− C1 DC/DC CONVERTER CASE VI− Load VIN− CHASSIS GROUND SHIELD PLANE VO− C3 C5 Figure 8. Diagram showing recommended layout of the FLT007A0 filter module with metalcase DC/DC converter modules. Example Data Showing Results using the FLT007A0 Modules Figure 9 shows example results obtained using a QBE025A0B1 DC/DC converter module with the FLT007A0 filter module. The QBE025A0B1 module is operated at an input voltage of 43.2V and output loading corresponding to an input current of 6.2A, a level close to the 7A capability of the FLT007A0 filter module. A 10nF ceramic capacitor was connected between Vin(-) and Vo(-) and a 4700pF ceramic capacitor between Vin(+) and Vo(+). The results show that the filter module is capable of meeting EN55022 Class B limits with sufficient margin. LINEAGE POWER 6 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Thermal Considerations Power modules operate in a variety of thermal environments; however, sufficient cooling should always be provided to help ensure reliable operation. Considerations include ambient temperature, airflow, module power dissipation, and the need for increased reliability. A reduction in the operating temperature of the module will result in an increase in reliability. The thermal data presented here is based on physical measurements taken in a wind tunnel. The test setup is shown in Fig. 10. Note that the airflow is parallel to the long axis of the module as shown in Fig. 10. 25.4_ (1.0) Wind Tunnel PWBs Figure 11. Tref Temperature measurement location. Power Module 76.2_ (3.0) x 12.7_ (0.50) Probe Location for measuring airflow and ambient temperature Air flow Figure 10. Thermal Test Set-up. The thermal reference point, Tref used in the specifications is shown in Figure 11. For reliable operation this temperature should not exceed 125oC. The output power of the module should not exceed the rated output current of the module. Please refer to the Application Note “Thermal Characterization Process For Open-Frame BoardMounted Power Modules” for a detailed discussion of thermal aspects including maximum device temperatures. LINEAGE POWER 7 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum Post solder Cleaning and Drying Considerations Post solder cleaning is usually the final circuit-board assembly process prior to electrical board testing. The result of inadequate cleaning and drying can affect both the reliability of a power module and the testability of the finished circuit-board assembly. For guidance on appropriate soldering, cleaning and drying procedures, refer to Lineage Power Board Mounted Power Modules: Soldering and Cleaning Application Note. nozzle outer diameter, which will safely fit within the allowable component spacing, is 8 mm max. Pick and Place Location Through-Hole Lead-Free Soldering Information The RoHS-compliant through-hole products use the SAC (Sn/Ag/Cu) Pb-free solder and RoHS-compliant components. They are designed to be processed through single or dual wave soldering machines. The pins have an RoHS-compliant finish that is compatible with both Pb and Pb-free wave soldering processes. A maximum preheat rate of 3°C/s is suggested. The wave preheat process should be such that the temperature of the power module board is kept below 210°C. For Pb solder, the recommended pot temperature is 260°C, while the Pb-free solder pot is 270°C max. Not all RoHS-compliant through-hole products can be processed with paste-through-hole Pb or Pb-free reflow process. If additional information is needed, please consult with your Lineage Power representative for more details. Figure 12. Pick and Place Location. Tin Lead Soldering The FLT007A0-SR power modules are lead free modules and can be soldered either in a lead-free solder process or in a conventional Tin/Lead (Sn/Pb) process. It is recommended that the customer review data sheets in order to customize the solder reflow profile for each application board assembly. The following instructions must be observed when soldering these units. Failure to observe these instructions may result in the failure of or cause damage to the modules, and can adversely affect long-term reliability. In a conventional Tin/Lead (Sn/Pb) solder process peak reflow temperatures are limited to less than 235oC. Typically, the eutectic solder melts at 183oC, wets the land, and subsequently wicks the device connection. Sufficient time must be allowed to fuse the plating on the connection to ensure a reliable solder joint. There are several types of SMT reflow technologies currently used in the industry. These surface mount power modules can be reliably soldered using natural forced convection, IR (radiant infrared), or a combination of convection/IR. For reliable soldering the solder reflow profile should be established by accurately measuring the modules CP connector temperatures. Surface Mount Information Pick and Place The FLT007A0-SR SMT modules use an open frame construction and are designed for a fully automated assembly process. The modules are fitted with a label designed to provide a large surface area for pick and place operations. The label meets all the requirements for surface mount processing, as well as safety standards, and is able to withstand reflow o temperatures of up to 300 C. The label also carries product information such as product code, serial number and location of manufacture. Nozzle Recommendations The module weight has been kept to a minimum by using open frame construction. Even so, these modules have a relatively large mass when compared to conventional SMT components. Variables such as nozzle size, tip style, vacuum pressure and pick & placement speed should be considered to optimize this process. The minimum recommended nozzle diameter for reliable operation is 5mm. The maximum LINEAGE POWER 8 Data Sheet March 26, 2008 FLT007A0/FLT007A0-SR Input Filter Modules 75Vdc Input Voltage Maximum, 7A Output Current Maximum 300 Pb-free Reflow Profile P eak Temp 235oC Co o ling zo ne 1 oCs -1 -4 250 REFLOW TEMP (°C) 200 Heat zo ne max 4oCs -1 150 100 So ak zo ne 30-240s P reheat zo ne max 4oCs -1 Tlim above 205oC 50 Power Systems will comply with J-STD-020 Rev. C (Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices) for both Pb-free solder profiles and MSL classification procedures. This standard provides a recommended forced-air-convection reflow profile based on the volume and thickness of the package (table 4-2). The suggested Pb-free solder paste is Sn/Ag/Cu (SAC). The recommended linear reflow profile using Sn/Ag/Cu solder is shown in Figure. 15. 0 MSL Rating REFLOW TIME (S) Figure 13. Reflow Profile for Tin/Lead (Sn/Pb) process. 240 235 The FLT007A0-SR SMT modules have a MSL rating of 1. Storage and Handling The recommended storage environment and handling procedures for moisture-sensitive surface mount packages is detailed in J-STD-033 Rev. A (Handling, Packing, Shipping and Use of Moisture/Reflow Sensitive Surface Mount Devices). Moisture barrier bags (MBB) with desiccant are required for MSL ratings of 2 or greater. These sealed packages should not be broken until time of use. Once the original package is broken, the floor life of the product at conditions of