ALLOY POWDER CORE SERIES INTRODUCTION
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1 ALLOY POWDER CORE SERIES INTRODUCTION 1 DMEGC alloy powder cores are made from insulated pretreatment alloy powders which have low losses at elevated temperature and have relatively stable inductance over temperature. DMEGC cores feature distributed air gaps which minimize fringing flux and makes them highly suited for applications such as switching regulator inductors, flyback transformers, and power factor correction (PFC) inductors. DMEGC alloy powder cores are competitively priced against gapped ferrite E-cores and their distributed air gap eliminates EMI loss problems associated with ferrites. A selection of standard size Toriode core, DE CORE, DQ CORE, SMD cores is available along with the ability to produce custom dimensions and other geometries. DMEGC offers a range of permeabilities (14µ ~ 125µ) as well as with a variety of other soft magnetic materials such as Sendust (DS Series), Iron silicon (DF Series), High Flux ( DH series) and MPP (DM Series). DMEGC Iron powder as a core material has been widely used in RF application for years. The distributed air gap properties inherent in iron powder cores make them extremely well suited for a variety of energy storage inductor applications. DMEGC Iron powder products, can be used in place of ferrite and iron-alloy laminations requiring a gap, which cover materials with permeabilities from 10 to intended for frequencies ranging from line frequency to 5MHz. SENDUST MATERIAL(DS SERIES) DMEGC sendust is approximately 85% iron, 9% silicon and 6% aluminum. Like all powder core there is evenly distributed air gap inside the sendust core. Sendust cores have near zero magnetostriction which is benefit to eliminating audible frequency noise in filter inductors. Sendust powder has better ratio of performance versus price and low temperature rising performance in circuit due to its low core loss. It is possible that sendust powder core will offer a reduction in core size over powder iron cores in a similar application. DS SENDUST POWDER CORE MATERIAL CHARACTERISTICS 1. Evenly distributed gaps in the core 2. Bs is up to 00Gs. 3. Good DC Bias. 4. Low core loss, lower than High-Flux and IPC core. 5. Working temperature can be up to 200C and has not thermal aging problem. 6. Having negative temperature coefficient when work in more than 25C. 7. Permeability is from 14 to 125.
2 Characteristics DMEGC DS MATERIAL TYPICAL CHARACTERIESTICS Unit 软 磁 金 属 Parameter 磁 粉 心 系 列 产 品 Initial Permeability -- 26~125 Saturation Magnetic Flux Density (Gs) 00 Curie (-40 ~125 ) Temperature ( ) >400 Temperature Coefficient 10-6/ 300 Density (g/cm3) Temperature Range -40~200 2 DS SENDUST POWDER CORE MAIN APPLICATIONS 1. PFC inductor. 2. On-line filter. 3. Switching regulator inductor 4. Flyback and Pulse transformer. 5. Solar inverter
3 3 DF IRON-SILICON MATERIAL(DF SERIES) The 6.5 wt% Iron-Silicon material is a well known alloy and offers significant advantages, displaying excellent soft magnetic properties such as high saturation magnetization, near zero magnetostriction and higher resistivity. DMEGC DF series powder cores are manufactured from a complex composition of Iron-Silicon powdered particles, compacted into geometries such as toroid, block, E or U-core shapes. The powder metal compaction process produces a product with excellent core loss performance compared with the conventional silicon-iron tape wound core due to the distributed air gap feature. DMEGC DF series powder cores have a typical 15,000 Gauss saturation flux density and core losses significantly lower than iron powder cores at high frequencies. The combination of high saturation flux density and high DC bias makes DF Iron-Silicon powder cores an ideal choice for higher power densities: where a low number of winding turns, low core loss and smaller size are required in today's power supply systems - especially in high energy storage applications. The curie temperature of the DF Iron-Silicon powder material is over 500 ºC. High temperature operation of the cores does not significantly affect the magnetic properties. There are no organic binders within DMEGC DF series powder cores. They are, therefore, not subject to thermal aging when operated at elevated temperatures. DMEGC DF series powder cores can provide a 30% reduction in volume compared to Iron powder cores and are the best solution for large-current applications at a competitive price. DF SERIES POWDER CORE MATERIAL CHARACTERISTICS 1. Evenly distributed gaps in the core. 2. Bs is up to 15000Gs. 3. Excellent DC Bias. 4. Core Loss is lower than iron powder core 5. No subject to thermal aging and material can work in Low cost and it can substitute IPC/Sendust /Hi-Flux core in some applications. 7. Permeability is from 14 to 125
4 Initial Characteristics Permeability Unit -- Parameter Saturation Magnetic Flux Density (Gs) 26~125 Curie Temperature ( ) (-40 ~125 ) >400 Temperature ρ Coefficient 10-6/ 400 Temperature Density Range (g/cm3) -40~ ~6.5 DMEGC DF MATERIAL TYPICAL CHARACTERIESTICS 4 DF SERIES POWDER CORE MAIN APPLICATIONS 1. Power inductor for big current circuit 2. PFC inductor 3. Switching regulator inductor 4. Buck inductor for VRM. 5. Smoothing choke for inverter 6. Solar inverter 7. UPS Power Supply
5 ALLOY POWDER CORE PART NUMBER DEFINATIONS TYPICAL ELECTRICAL PERFORMANCE CURVES DS DF permeability 0.1 毫 米 Material Mix. OD in 0.1mm DS: DF: Sendust Iron-Silicon 5 Percent Initial Permeability %µ S090 S125 S075 S060 S DC Magnetizing Force (Oersteds)
6 102 6 Percent Initial Permeability %µ S026 S060 S075 S090 S Temperature ( O C) 00 S026 Core loss(mw/cm 3 ) 0 500KHz 300KHz 200KHz KHz 50KHz 25KHz Flux Density (mt)
7 00 7 S060~S125 Core Loss (mw/cm 3 ) 0 500KHz 300KHz 200KHz KHz 50KHz 25KHz Flux Density (mt) Percent Initial Permeability %µ F075 F090 F125 F060 F DC Magnetizing Force (Oersteds)
8 104 8 Percent Initial Permeability %µ F125 F090 F075 F060 F Temperature ( O C) 00 F026 Material Core Loss Pcv (mw/cm 3 ) 0 300KHz 200KHz KHz 50KHz 25KHz 10KHz Flux Density B (mt)
9 0 9 F060~F125 Material Core Loss Pcv (mw/cm 3 ) KHz 200KHz KHz 50KHz 25KHz 10KHz 1 10 Flux Density B (mt)
10 DMEGC Customized Part Number sizes are welcome. DS /DF SERIES POWDER (mm) OD Before coating After coating CORES (mm) ID PHISICAL (mm) HT ODmax DATA (mm) IDmin (mm) HTmax (mm) (cm2) Ae (cm) Le (cm3) Ve DS/DF063XXX DS/DF068XXXA DS/DF078XXX DS/DF097XXX DS/DF102XXX DS/DF103XXX DS/DF112XXX DS/DF127XXXB DS/DF146XXX DS/DF166XXX DS/DF173XXX DS/DF203XXX DS/DF229XXX DS/DF236XXX DS/DF270XXXA DS/DF330XXX DS/DF358XXX DS/DF384XXX DS/DF400XXX DS/DF467XXX DS/DF468XXX DS/DF508XXX DS/DF571XXX DS/DF572XXX
11 DMEGC DS 26 Sendust Fe-Si AL nh/n2 OD (mm) ID (mm) HT (mm) /DF SERIES POWDER CORESINDUCTANCE FACTOR TABLE DS DS DS DF DF DF Permeability DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS068026A DS068060A DF068026A DF068060A DS068075A DF068075A DS068125A DS068090A DF068125A DF068090A DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF
12 pperuperm Sendust Fe-Si AL nh/n2 OD (mm) 软 磁 金 属 ID 磁 (mm) 粉 心 系 列 HT 产 (mm) 品 DS097026B DS097060B DF097026B DF097060B DS097075B DF097075B DS097125B DS097090B DF097125B DF097090B DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS127026B DS127060B DF127026B DF127060B DS127075B DF127075B DS127125B DS127090B DF127125B DF127090B DMEGC 12
13 pperuperm Sendust Fe-Si AL nh/n2 OD (mm) 软 磁 金 属 ID 磁 (mm) 粉 心 系 列 HT 产 (mm) 品 DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DF DS DS DF DF DS DF DS DF DS DS DF DF DMEGC 13
14 pperuperm Sendust Fe-Si AL nh/n2 OD (mm) 软 磁 金 属 ID 磁 (mm) 粉 心 系 列 HT 产 (mm) 品 DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DS DS DF DF DF DS DS DF DF DMEGC 14
15 pperuperm Sendust Fe-Si AL nh/n2 OD (mm) 软 磁 金 属 ID 磁 (mm) 粉 心 系 列 HT 产 (mm) 品 DS DS DS DF DF DF DS DS DF DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DF DS DS DF DF DS DS DS DF DF DF DS DS DF DF DS DS DF DF DS DF DS DS DF DF DS DS DS DF DF DF DMEGC 15
16 SMD SERIES PRODUCT OF ALLOY POWDER CORE 16 There are two kinds of SMD alloy powders, Iron-Silicon and sendust. Sendust have lower core loss and Iron-Silicon have better DC bias. Sendust core loss is a half of Iron-Silicon material and one-third of iron powder core. But Sendust material is more expensive than Iron-Silicon and iron powder. Iron-Silicon material has more reasonable high ratio of performance versus price, and has not thermal aging problem. It can substituted iron SMD core in many field. Material SMD S40 No. Material Name Ref Permeability Color GENERAL MATERIAL TYPES S60 Sendust Black F30 F50 DF Black
17 17 SMD CORE SHAPES 图 1 图 2 Figure 图 33 Figure 图 44 Figure 图 55 Figure 图 66
18 TYPE DMEGC Figure (mm) A (mm) B (mm) C D(mm) (mm) E (mm) F (mm) G AL ~ (nh/n2) SMD CORE SIZES ~ ~ ~ ~1.13.8/4.0/ / ~ ~ ~1.54.8/5.2/ / /10. DQY ~ ~ DQ10.0 DQ ~80 DQC ~ ~4.5 40~ DQ ~1.2 40~ ~ ~ Notes: 18 a) The height and the wall thickness can be adjusted in a certain range. b) The typical outer dimension tolerance of DQ6.8 series is ±0.15mm.The typical outer dimension tolerance of DQ10 and DQC10 series is ±0.20mm.The typical outer dimension tolerance of DQ12.7 and DQ12.7Y series is ±0.25mm, please refer to the specific drawing for the details. c) General inductance tolerance is ±15% d) Please feel free to contact sample@dmegc.com.cn if you have any question
19 Characteristics SMD Bs Unit Parameter SENDUST MATERIAL CHARACTERIESTICS Saturation (-40 ~125 ) Magnetic Flux Core Loss MW/cm3 800@kHz,mT Initial Density Permeability (Gs) ~75 Temperature Curie Temperature Coefficient 10-6/ ( ) >400 Temperature Density Range (g/cm3) -55~ SMD SENDUST MATERIAL CHARACTERISTIC 1) Good frequency characteristic, Operating frequency can be up to more than 500kHz. 2) Loss core loss. Lower than IPC and Hi-Flux. Low temperature rise in circuit. 3) Good DC bias which can be work in tens of current. 4) Working in high temperature and no thermal aging problem. 5) High storage energy stability, 6) Having negative temperature coefficient. SENDUST POWDER CORE APPLICATIONS 1) Notebook / PDA/ LCD/ Car 2) DC/DC Converter in power system 3) low profile, high current powder supplier 4) portable electronic devices
20 SMD SENDUST ELECTRICAL PERFORMANCE CURVES Percent of Initial Permeablity (%) S 60 S DCMagnetizing Force (Oe) Core Loss (mw/cm 3 ) kHz 50kHz 25kHz khz Flux Density (Gs)
21 21 S40 Percent of Initiao Permeability (%) S Frequency (MHz) Characteristics SMD Bs Unit Parameter IRON-SILICON DF MATERIAL CHARACTERISTICS Saturation (-40 ~125 ) Magnetic Flux Core Loss MW/cm3 1500@50kHz,mT Initial Density Permeability (Gs) -- 26~75 Curie Temperature ( ) Temperature Coefficient 10-6/ >400 Density (g/cm3) Temperature Range -55~200
22 22 SMD DF MATERIAL CHARACTERISTIC 1. Good frequency characteristic, Operating frequency can be up to more than 500kHz. 2. Loss core loss and lower than iron powder core and higher than sendust core 3. Excellent DC Bias. 4. No thermal aging problem in operating temperature of 200 SMD DF MATERIAL APPLICATIONS 1. Inductor for low Profile and high current power supply. 2. DC/DC Converter 3. Buck inductor for VRM. SMD DF MATERIAL ELECTRCIAL PERFORMANCE CURVES 90 Percnet of Initial Permeablity (%) WH35 F 35 -WH55 F DC Magnetizing Force (Oe)
23 Core Loss (mw/cm 3 ) 0 500kHz 300kHz 25kHz khz 50kHz F Flux Density (Gs) Core Loss (mw/cm 3 ) 0 300kHZ khz 50kHZ 25kHZ F Flux Density (Gs)
24 24 Percent of Initial Permeability (%) F 55 WH55 WH35 F Frequency (MHz)
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