FLT Series www.murata-ps.com Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters OBSOLETE PRODUCT Thiss product iss not RoHS S compli compliant. iant.. Features ■ Compatible with most modern switching DC/DC converters ■ Provides both common-mode and differential-mode filtering ■ Facilitates compliance with all conductedemissions specifications ■ Small size; PCB mountable ■ –40 to +100°C (case) operation ■ UL94V-0 rated package material ■ UL approved ■ Lucent FLTR100V10/20 compatible Although agency-imposed conducted-emissions standards are targeted for system-level designs, designers often apply these standards at the component level to ensure system-level compliance. For those DC/DC converters that do not meet these standards, DATEL offers the FLT-100V Series EMI filters. When used with the recommended external capacitors, this family of filters significantly reduces both the common-mode and differential emissions injected back to the power source. These rugged filters are packaged in non-conductive, UL94V-0 rated, 1" x 2" x 0.5" (FLT-100V10) and 1.6" x 2" x 0.5" (FLT-100V20) packages. Components and the pcb are coated with a humidity-sealing conformal coating and then encapsulated with a thermally conductive potting compound providing outstanding moisture/vibration resistance. Both filters are rated for 100Vdc differential input voltage and are internally bypassed with a telecom/datacom preferred mylar, self-healing, 100Vdc rated capacitor. Input-to-GND and Output-to-GND isolation voltages are guaranteed at 1500Vdc. Inductor copper losses and pcb trace losses are minimized to attain a low Input-to-Output per leg resistance of 9.5mΩ for FLT-100V10 and 4.8mΩ for FLT100V20 when measured at +25°C. Both Filters are fully characterized to 20MHz for both common-mode and differential-mode dynamic insertion losses. The FLT-100V series EMI filters are UL approved. +INPUT +OUTPUT –INPUT –OUTPUT Model FLT-100V10 GROUND +INPUT +OUTPUT +INPUT +OUTPUT –INPUT –OUTPUT Model FLT-100V20 –INPUT –OUTPUT GROUND Figure 1. Simplified Schematics For full details go to www.murata-ps.com/rohs www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 1 of 7 FLT Series Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters Performance Specifications and Ordering Guide ➀ Model VIN (Volts, max.) Average current (Amps max.) Resistance Per Leg Typ. (mΩ, max.) Common-Mode ➁ Insertion Loss (dB, typ.) Differential-Mode ➁ Insertion Loss (dB Typ.) Package (Case, Pinout) FLT-100V10 100 10 4.8 –37 –58 F1, P45 FLT-100V20 100 20 9.5 –29 –48 F2, P46 ➀ Specifications at TA = +25°C unless otherwise noted. ➁ 50Ω load @ 500kHz. PA R T N U M B E R S T R U C T U R E FLT - 100V10 - L1 Part Number Suffixes The FLT-100V series offer shorter pins than those shown in the mechanical specifications drawing. Add suffix as desired Filter Module Series 100V10 = 100 Volt input 10 Amp rating 100V20 = 100 Volt input 20 Amp rating L1 Suffix Short pins: 0.110" (+0.015/–0.010) L2 Suffix Short pins: 0.145" (+0.015/–0.010) M E C H A N I C A L S P E C I F I C AT I O N S Model FLT-100V10 Model FLT-100V20 2.00 (50.80) 2.00 (50.80) PLASTIC CASE 0.48 (12.19) Case F2 STANDOFF 0.020 (0.51) 0.031 ±0.001 DIA. (0.787 ±0.025) 0.20 MIN (5.08) PLASTIC CASE 0.48 (12.19) Case F1 0.20 MIN (5.08) 0.15 (3.81) 1.700 (43.18) 0.15 (3.81) 1.700 (43.18) 0.475 (12.07) 1 STANDOFF 0.020 (0.51) 0.040 ±0.001 DIA. (10.16 ±0.025) 0.700 (17.78) 5 3 0.750 (19.05) 2 1.00 (25.40) 0.600 (15.24) 3 EQ. SP. @ 0.200 (5.08) 4 3 5 9 0.10 (2.54) 2 6 7 1 4 0.25 (6.35) 8 0.600 (15.24) 3 EQ. SP. @ 0.200 (5.08) 1.60 (40.64) BOTTOM VIEW 0.13 (3.30) BOTTOM VIEW I/O Connections Pin 1 2 3 4 5 Function P45 +Input –Input Ground –Output +Output I/O Connections Pin 1 2 3 4 5 6 7 8 9 Function P46 +Input +Input –Input –Input –Output –Output +Output +Output Ground www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 2 of 7 FLT Series Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters Performance/Functional Specifications T E C H N I C A L N O T E S Typical @ TA = +25°C under nominal line voltage, balanced "full-load" conditions, unless noted. Input Input Voltage Range: 100 Volts maximum Average Current @ +25°C: ➀ FLT-100V10 FLT-100V20 10 Amps maximum 20 Amps maximum Average Current @ +60°C: ➁ FLT-100V10 FLT-100V20 10 Amps maximum 20 Amps maximum Resistance Per Leg: FLT-100V10: @ 25°C @ –40°C @ +125°C FLT-100V20: @ 25°C @ –40°C @ +125°C 9.5mΩ 7.6mΩ 11.8mΩ 4.8mΩ 4mΩ 6.3mΩ Isolation Voltage Input to GND 1500Vdc minimum Isolation Voltage Output to GND 1500Vdc minimum Dynamic Characteristics Differential-Mode Insertion Loss See Ordering Guide Common-Mode Insertion Loss See Ordering Guide Environmental Operating Case Temperature –40 to +100°C MTBF @ 100°C Case FLT-100V10 FLT-100V20 2,856,374 hours 2,521,681 hours Storage Temperature –55 to +125°C Physical Case Material Plastic, UL 94V-0 rating Case Dimensions: FLT-100V10 FLT-100V20 1" x 2" x 0.5" (25.4 x 50.8 x 12.7mm) 1.6" x 2" x 0.5" (40.6 x 50.8 x 12.7mm) Pin Material Brass, solder coated Pin Diameter: FLT-100V10 FLT-100v20 0.031" (0.787mm) 0.040" (1.016mm) Pin Length See Part Number Structure Weight: FLT-100V10 FLT-100V20 1.28 ounces (36.3 grams) 2.16 ounces (61.2 grams) Lead Temperature Soldering, 10 seconds +300°C ➀ +25°C, 20lfm (natural convection). ➁ +60°C, 20lfm air flow (natural convection). Description The FLT-100V series of passive filters are optimized to reduce both commonmode and differential-mode noise on both input and output lines of switching DC/DC converters. The FLT-100V10 is rated for 10A of continuous current while the FLT-100V20 is rated for 20A. Differential-mode and Common-mode Noise Designers who are faced with reducing conducted emissions in DC/DC applications must address both differential-mode and common-mode noise. Differences measured between the two input lines of the DC/DC converter are classified as differential noise. The dominant contribution to differential noise is the switching action of the DC/DC converter. Consequently, the majority of noise will be seen at the converter’s switching frequency and it’s harmonics. The FLT-100V series filter uses a mylar, self healing, 100Vdc rated input capacitor connected between the two input lines (traditionally referred to as “X” capacitors), in conjunction with the leakage inductance of the common mode chokes to attenuate the low-frequency differential noise. In addition to the filter, a low-ESR input capacitor (C1 of Figure 4) is also recommended at the input to the DC/DC to provide a low source impedance and additional noise attenuation. See typical performance curves for differential-mode insertion loss performance. Common –mode noise is measured as variations between the input lines (in common) with respect to the Ground pin. Common-mode noise is generally in the high frequency spectrum (>10MHz) and originates in the switching components of the DC/DC converter. A capacitor from each line to the ground pin (referred to as “Y” capacitors), connected between the two common mode chokes, provides attenuation of this unwanted common-mode noise. This ground pin should be connected to a relatively quiet chassis ground point independent from the DC/DC converter case connection. Note that a noisy chassis ground can inadvertently introduce common noise into the system. Some DATEL DC/DC converters are designed with an internal input-to-outptut capacitor to reduce common-mode noise generated from within the converter. In addition, common-mode noise can be reduced with the addition of external ceramic capacitors of 0.1μF to 1.0μF (C2 thru C4 of Figure 4) installed from inputs and outputs to a shield plane connected to the DC/DC case; safety standards may limit the size of these capacitors for some applications. See typical performance curves for common-mode insertion loss performance. FLT-100V series filters incorporate an internal, multi-layer film polymer capacitor between the input lines for differential-mode noise filtering. This telecom/datacom preferred capacitor provides electrical stability under both AC and DC current loads. The capacitors insulation resistance tends to improve under the stresses of heat and voltage. A typical ESR of 6 milli-OHMs @ 500kHz, provides the necessary low impedance for high frequency input current handling. Absolute Maximum Ratings Input Voltage Range 100 Volts Isolation Voltage Input to GND 1500Vdc minimum Isolation Voltage Output to GND 1500Vdc minimum Operating Case Temperature –40 to +100°C Storage Temperature –55 to +125°C www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 3 of 7 FLT Series Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters FLT-100V FILTER +INPUT OUTPUT –INPUT OUTPUT DC/DC CONVERTER +INPUT Conducted Emissions Performance +V1OUT +V2OUT C1 –INPUT GND CHASSIS GND OUTPUT RETURN CASE C2 C6 C C4 C3 SHIELD PLANE Figure 2. Typical Application Using FLT-100V Series Filters in Front of a DC/DC Converter Conducted Emissions standards imposed by governing agencies must be met at the system level, not the component level. Many designers, however, apply these standards to the individual components to assure system-level compliance. The following performance graphs show the Conducted Emissions improvements seen when using an FLT-100V series filter in series with the input lines of a typical switching DC/DC converter. Conducted Emissions testing was performed within a EMCO 5305 GTEM test cell utilizing EMCO automated EMC test software. Signal levels were measured from an EMCO 3825/2 Line Impedance Stabilization Network (LISN) using a Hewlett Packard 8568B spectrum analyzer with an attached Hewlett Packard 85650A quasi-peak adapter in peak detection. Limits are based on FCC Part 15 Subpart J Class A and B, as well as EN 55022 Class A and B. Figure 2 shows a typical connection diagram for the attenuation of both differential and common-mode noise when used as an input filter to a DC/DC converter, while Figure 3 shows the recommended layout. Noise introduced into circuits is dependent upon the characteristics of the load, layout and grounding techniques, and cabling. Since application requirements differ, the final circuit configurations may be best obtained through empirical testing. C3 8 4 4 4 2 2 2 4 2 FLT-100V10 FILTER 1 1 1 3 7 C1 3 3 5 5 1 90 EN 55022 Class A Limit EN 55022 Class B Limit 80 Radiated Emissions (dBμV/M) C5 BWR-5/6-3.3/7-D12 Conducted Emissions 100 70 60 50 40 30 20 10 6 Conducted Emissions 5 0 C2 TOP VIEW DC/DC CONVERTER 0.1 5 1.0 10.0 Frequency (MHz) C4 BWR-5/6-3.3/7-D12 Conducted Emissions Using FLT-100V10 Filter C6 100 90 Figure 3. Typical Layout Using FLT-100V Series Filters in Front of a DATEL BWR-5/6-3.3/7-D12 Dual-Output DC/DC Converter EN 55022 Class A Limit EN 55022 Class B Limit Radiated Emissions (dBμV/M) 80 70 60 50 40 30 20 Conducted Emissions 10 0 0.1 1.0 10.0 Frequency (MHz) www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 4 of 7 FLT Series Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters Operating Temperature FLT-100V10 BWR-5/700-D48A Both the FLT-100V10 and FLT-100V20 are guaranteed for operation up to +100°C case temperature. Performance graphs (see typical performance curves) are provided for both models that depict the case temperature rise versus average current for various air flow conditions. +5V OUT +INPUT +INPUT OUTPUT COMMON –INPUT –INPUT OUTPUT –5V OUT On/Off Control and External Fusing 10μF +5V LOAD GND To eliminate any current-path bypassing of the filter, the on/off control circuitry used to control the DC/DC converter should be referenced to the –Input pin of the converter and not to the –Input of the filter. The FLT-100V series filters do not provide internal fusing, therefore An external fuse of appropriate DC/DC rating should be provided externally. 10μF –5V LOAD Figure 5. Using FLT-100V10 as an Output Filter for Bipolar DC/DC Using a Single Filter with Multiple Converters A single FLT-100V series filter can be used with multiple DC/DC converters provided that the maximum rated current is observed. The use of commonmode chokes in the design of these filters, however, requires that the +Input current and –Input current be equal. A small imbalance in these currents may cause the inductor to saturate and degrade the filter’s performance. Output Ripple and Noise of BWR-5/700-D48A (No external capacitance.) Input Capacitor FLT-100V series fi lters incorporate an internal, multi-layer film polymer capacitor between the input lines for differential-mode noise filtering. This telecom/datacom preferred capacitor provides electrical stability under both AC and DC current loads. The capacitors insulation resistance tends to improve under the stresses of heat and voltage. A typical ESR of 6 milliOHMs @ 500kHz, provides the necessary low impedance for high frequency input current handling. Using FLT-100V as an Output Filter Although optimized for use an input conducted emissions filter, the FLT-100V series can be used as an output filter for DC/DC converters to reduce output ripple and attenuate high frequency noise. Figures 4 and 5 show the recommended connections for both unipolar and bipolar applications. Depending upon application and desired performance, the Gnd pin connection can be made at the output return, case shield plane, or left fl oating.Output ripple and noise improvements are shown in the following illustrations for a typical DC/DC converter that is using the setup shown in Figure 5. UWR-5/1800-D48A 20mV/div, 20MHz Bandwidth Output Ripple and Noise of BWR-5/700-D48A (Using single leg of FLT-100V10 and 10μF capacitance.) FLT-100V10 +INPUT +5V OUT +INPUT –INPUT COMMON –INPUT OUTPUT 6.8μF +5V LOAD OUTPUT GND Figure 4. Using FLT-100V10 as an Output Filter for Unipolar DC/DC 20mV/div, 20MHz Bandwidth www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 5 of 7 FLT Series Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters Case Temperature Rise vs. Average Current and Air Flow FLT-100V10 FLT-100V20 50 0.1m/s (20lfm) Natural Convection Case Temperature Rise Above Ambient (˚C) Case Temperature Rise Above Ambient (˚C) 50 1.0m/s (197lfm) 40 2.0m/s (394lfm) 3.0m/s (591lfm) 30 20 10 0 0.1m/s (20lfm) Natural Convection 1.0m/s (197lfm) 40 2.0m/s (394lfm) 3.0m/s (591lfm) 30 20 10 0 0 2 4 6 8 0 10 4 Current Through Each Leg (Amps) 8 12 16 20 10.000 100.000 10.000 100.000 Current Through Each Leg (Amps) Typical Differential-Mode Insertion Loss Curves FLT-100V20 Differential-Mode Insertion Loss (Into 50 Ohm Load) 0 Differential-Mode Insertion Loss (dB) Differential-Mode Insertion Loss (dB) FLT-100V10 Differential-Mode Insertion Loss (Into 50 Ohm Load) –10 –20 –30 –40 –50 –60 –70 –80 –90 0.001 0.010 0.100 1.000 10.000 0 –10 –20 –30 –40 –50 –60 0.001 100.000 0.010 0.100 1.000 Frequency (MHz) Frequency (MHz) Typical Common-Mode Insertion Loss Curves FLT-100V20 Common-Mode Insertion Loss (Into 50 Ohm Load) 0 Common-Mode Insertion Loss (dB) Common-Mode Insertion Loss (dB) FLT-100V10 Common-Mode Insertion Loss (Into 50 Ohm Load) –10 –20 –30 –40 –50 –60 –70 –80 0.001 0.010 0.100 1.000 Frequency (MHz) 10.000 100.000 0 –10 –20 –30 –40 –50 –60 –70 0.001 0.010 0.100 1.000 Frequency (MHz) www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 6 of 7 FLT Series Filter Modules, 100Vdc, 10 Amp and 20 Amp Differential/Common-Mode Filters Murata Power Solutions, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A. ISO 9001 and 14001 REGISTERED ISO 9001 REGISTERED Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2011 Murata Power Solutions, Inc. 05/06/08 www.murata-ps.com/support MMP_FLT10-20-Series.B04 Page 7 of 7