Our line of magnetic components covers a wide array of products

Magnetic Terms and Measurement
Magnetic Terms and Measurement
1. Short form explanation:-
1
Video Isolation Transforrmers
MEDICAL GRADE MAGNETICS
L or Lp = Primary Inductance, in µH or mH
ton
LL = Leakage Inductance, in µH
Ip1 Ip2
Ns
R1
ton
ton
Is1
Is2
T/2
Ns
T
CR2
Ip2
DWV = Dielectric Withstanding Voltage, in DCV
Hipot = High Potential Isolation, in ACV
Is2
Push-Pull, Full-Wave, Center-Tapped Circuit
SRF: Self Resonance Frequency, in KHz or MHz
Pt = Po ( √2/η + √2 ) Watts
IM = Magnetization Current, in mA
IDC = Lp drops 10%* typical from initial value at this DC current
IRMS = Typical ΔT of 40°C* rise at this RMS current
ISAT = same as IDC, different terms
2
T1
RL = Return Loss, in dB
CMRR = Common Mode Rejection Ratio, in dB
ton
DCMR = Differential Mode to Common Mode Rejection Ratio, in dB
Ip
Ns
Np
R1
ton
ton
Is1
Is2
T/2
Ns
T
T
CR2
2. Differential Choke for RFI.
Is2
Fc = Cut off Frequency
•Medical Grade Transformer constructed
to comply with IEC60950 and UL60601
Reinforced Isolation
•Designed to support Video, Telecom
and Power applications
•Power from 1 Watt to 1000 Watts
IEC950 Transformer
•Switching frequency from
10KHz to 1MHz
•Other safety requirments subject to request
•RoHS and REACH Compliance
CR1
Is1
Ip
Ip
Xtalk = Cross Talk, in dB
DIGITAL AUDIO TRANSFORMER
(Normally = -3dB)
Full-Wave, Center-Tapped Circuit
L = Total Inductance
Pt = Po ( 1/η + √2 ) Watts
C = Total Capacitance
Z = Impedance
π = 3.14
∏√
3
Ip
ton
Ip
3. Common Mode Choke for EMI
Ip
Fc= Corner Frequency
Np
T1
Is
Bridge
Diode
ton
Is
Ns
R1
T
D = Damping factor
Automotive
CR1
+
Np
DCR = Direct Current Resistance, in Ω
IL = Insertion Loss, in dB
•Shielded and non shielded version
available
•Low leakage, low capacitance and
low distortion
•Compatible to AES/EBU and SPDIF
•RoHS and REACH Compliance
-
T
CD = Distributed Capacitance, in pF
Is1
Np
ton
T/2
CWW = Interwinding Capacitance, in pF
Frequency: 10Hz to 12MHz
Package:
Shielded Enclosure or Open frame
•Different sizes for special
requirements
•75Ω:75Ω, 75Ω: 100Ω and
custom impedance
•RoHS and REACH Compliance
T1
Ip1
OCL = Open Circuit Inductance, in µH or mH
Is
T
(normally = 0.707)
Military and Aerospace
L=(Rload*D)/(π*Fc)
Full-Wave Bridge Circuit
C=1/{(π*Fc)2*L}
Pt = Po ( 1/η + 1 ) Watts
Where Pt = Apparent Power, Po = Output Power, h = Efficiency
A. Magnetic Flux caused by common mode current is accumulated to produce impedance
B. Magnetic Flux caused by differential mode current cancels each other so non or
very little impedance is produced.
4
Flyback transformer with flux band and shield connection
4. Current Transformer
Ip*Np=Is*Ns
If Np=1, Ip=Is*Ns
Vout = Is*RT
Vout = Vref
Rt = Vref*Ns/Ip
•Complies with Automotive and Industrial Standards
PPAP, MSDS and Reliablity Testing
ground will give better result on EMI suppression.
Applicable standards:
•Supports -40°C to +130°C and better
MIL-STD-1553B
•Custom Design and Manufacturing of Tranformers, Common
•Designed and Manufactured in
Mode Chokes, Power Inductors and Current Transformers
• Connect the Flux Band and Faraday shield to V_High other than
Solderability: MIl-STD-202, 208D
the USA
•Material Insulation: UL94V-0, Class B to Class H
•Solder: Sn60Pb40 or SN63Pb37
•RoHS and REACH Compliance
•100% Testing per MIl-PRF-27
•Cage Code: 4QGP2
• Diode helps to reduce the flywheel effect on transformer.
4. Straight Wire Inductor
OCL = inductance in µH
Calculation of OCL
L = length of wire, in cm
E (J) = ½ * L * I2
d = diameter of wire, in cm
e = L * (dI/dT)
Our line of magnetic components covers a wide array of products
and applications to meet all your project needs on magnetics.
L = (e*dT)/dI
Military Pulse Transformer
dI = (e*dT)/L
OCL = 0.002*L*[2.3*log(4*L/d - 0.75)]µH
The insulation thickness of the wire play an important role of inductance over rod core
E (Joule) = ½ * L * (e*dT/L)2
E (Joule) = (½ e2*T2)/L
and aircoil. At the same time, the leakage inductance interwinding capacitance are
counting on the distance between 2 wires distance from center to center of the copper.
Please contact MPS for more magnetic technical information.
Please contact MPS for more magnetic technical information.
www.mpsind.com
SWITCHING POWER SUPPLY (SMPS) TRANSFORMERS
POWER INDUCTORS
Power Output: 1 Watt to 1,000 Watts
Current Capacity: 1mA to 50A
Application: 10 BASE-T, 10/100 BASE-T, Gigabit, PoE
Switching Frequency: 10KHz to 5MHz
Operating Frequency: DC to 10MHz
RJ45 with Magnetic Module:
Topology: Full Range
Package: SMD and Thru Hole, Radial and Axial
Vertical, Horizontal, SMD, 1xN, 2xN, USB Combo
Package: Surface Mount and Thru Hole
Material: UL94V-0, Class A to Class N
Meets and exceeds IEEE 802.3 requirements
Material: UL94V-0, Class A to Class N
Compliance: RoHS and REACH
SMD Switching Transformer
Compliance: RoHS and REACH
Construction in compliance with: VDE, CSA, IEC60950, IEC 61558, and
High Voltage Flyback
Transformer
LAN AND RJ45 WITH MAGNETIC MODULES
Operating Temp: 0°C to 70°C, extended temperature range available
Application: AC Flux Choke, Differential Choke, Filter, Buck/Boost
SMD Self-Leaded Inductor
SMD High Current Inductor
upon request
Verticle Mount RJ45
Surface Mount RJ45
Compliance: RoHS and REACH compliance
Converter, PFC Inductor
UL60601 (subjected to customer request)
LINEAR TRANSFORMERS | EE, EI AND TOROIDAL TYPE
CURRENT TRANSFORMER | EI AND TOROIDAL TYPE
COMMON MODE CHOKES
RF and BALUN TRANSFORMER
ADSL, HDSL, SHDSL AND VDSL
OTHER TELECOM TRANSFORMER
IMPEDANCE MATCHING, FREQUENCY MIXER AND DIRECTION COUPLER
T1/E1, ISDN, T3/E3, E4/STM-1, FIBRE CHANNEL
Power Output: 1 Watt to 1,000 Watts
Current Capacity: 0.1A to 100A
Current: Up to 50A, Single phase
Frequency: Up to 3GHz
Baud Rate: Up to 100Mbps Baud Rate: Up to 155Mbps
Operating Frequency:
Operating Frequency:
and Three Phase
Impedance Ratio:
Harmonic Distortion:
Harmonic Distortion:
50Hz to 400Hz
50Hz to 500KHz
Inductance: Up to 100mH
Subject to request
Extremely low
Extremely low signal distortion
Topology: Traditional
Accuracy: up to ±0.2%
Operating Frequency:
Package: SMD and Thru Hole
Package: SMD and Thru Hole
Meets and exceeds CCITT G703
Package:
Package: SMD and Thru Hole
Up to 100MHz
Material:
Isolation: IEC950 Basic
Surface Mount and Thru Hole
Material: UL94V-0, Class A to Class F
Split Bobbin Lamination
Transformer
Compliance: RoHS and REACH
Construction in compliance with: VDE, UL, CSA
Material:
1000:1 Currrent Transformer
Package: SMD and Thru Hole
UL94V-0, Class A to Class H
Material: UL94V-0, Class A to Class F
Compliance: RoHS and REACH
Hipot: Up to 4KVRMS
Compliance: RoHS and REACH
Three Phase CMC
UL94V-0, Class A to Class F
Compliance: RoHS and REACH
Audio Transformer
and Supplementary
Compliance: RoHS and REACH
VDSL2 Transformer
Package: SMD and Thru Hole
Material Insulation:
UL94V-0, Class B to Class F
Compliance: RoHS and REACH
Telecom T3/E3 SMD
SWITCHING POWER SUPPLY (SMPS) TRANSFORMERS
POWER INDUCTORS
Power Output: 1 Watt to 1,000 Watts
Current Capacity: 1mA to 50A
Application: 10 BASE-T, 10/100 BASE-T, Gigabit, PoE
Switching Frequency: 10KHz to 5MHz
Operating Frequency: DC to 10MHz
RJ45 with Magnetic Module:
Topology: Full Range
Package: SMD and Thru Hole, Radial and Axial
Vertical, Horizontal, SMD, 1xN, 2xN, USB Combo
Package: Surface Mount and Thru Hole
Material: UL94V-0, Class A to Class N
Meets and exceeds IEEE 802.3 requirements
Material: UL94V-0, Class A to Class N
Compliance: RoHS and REACH
SMD Switching Transformer
Compliance: RoHS and REACH
Construction in compliance with: VDE, CSA, IEC60950, IEC 61558, and
High Voltage Flyback
Transformer
LAN AND RJ45 WITH MAGNETIC MODULES
Operating Temp: 0°C to 70°C, extended temperature range available
Application: AC Flux Choke, Differential Choke, Filter, Buck/Boost
SMD Self-Leaded Inductor
SMD High Current Inductor
upon request
Verticle Mount RJ45
Surface Mount RJ45
Compliance: RoHS and REACH compliance
Converter, PFC Inductor
UL60601 (subjected to customer request)
LINEAR TRANSFORMERS | EE, EI AND TOROIDAL TYPE
CURRENT TRANSFORMER | EI AND TOROIDAL TYPE
COMMON MODE CHOKES
RF and BALUN TRANSFORMER
ADSL, HDSL, SHDSL AND VDSL
OTHER TELECOM TRANSFORMER
IMPEDANCE MATCHING, FREQUENCY MIXER AND DIRECTION COUPLER
T1/E1, ISDN, T3/E3, E4/STM-1, FIBRE CHANNEL
Power Output: 1 Watt to 1,000 Watts
Current Capacity: 0.1A to 100A
Current: Up to 50A, Single phase
Frequency: Up to 3GHz
Baud Rate: Up to 100Mbps Baud Rate: Up to 155Mbps
Operating Frequency:
Operating Frequency:
and Three Phase
Impedance Ratio:
Harmonic Distortion:
Harmonic Distortion:
50Hz to 400Hz
50Hz to 500KHz
Inductance: Up to 100mH
Subject to request
Extremely low
Extremely low signal distortion
Topology: Traditional
Accuracy: up to ±0.2%
Operating Frequency:
Package: SMD and Thru Hole
Package: SMD and Thru Hole
Meets and exceeds CCITT G703
Package:
Package: SMD and Thru Hole
Up to 100MHz
Material:
Isolation: IEC950 Basic
Surface Mount and Thru Hole
Material: UL94V-0, Class A to Class F
Split Bobbin Lamination
Transformer
Compliance: RoHS and REACH
Construction in compliance with: VDE, UL, CSA
Material:
1000:1 Currrent Transformer
Package: SMD and Thru Hole
UL94V-0, Class A to Class H
Material: UL94V-0, Class A to Class F
Compliance: RoHS and REACH
Hipot: Up to 4KVRMS
Compliance: RoHS and REACH
Three Phase CMC
UL94V-0, Class A to Class F
Compliance: RoHS and REACH
Audio Transformer
and Supplementary
Compliance: RoHS and REACH
VDSL2 Transformer
Package: SMD and Thru Hole
Material Insulation:
UL94V-0, Class B to Class F
Compliance: RoHS and REACH
Telecom T3/E3 SMD
SWITCHING POWER SUPPLY (SMPS) TRANSFORMERS
POWER INDUCTORS
Power Output: 1 Watt to 1,000 Watts
Current Capacity: 1mA to 50A
Application: 10 BASE-T, 10/100 BASE-T, Gigabit, PoE
Switching Frequency: 10KHz to 5MHz
Operating Frequency: DC to 10MHz
RJ45 with Magnetic Module:
Topology: Full Range
Package: SMD and Thru Hole, Radial and Axial
Vertical, Horizontal, SMD, 1xN, 2xN, USB Combo
Package: Surface Mount and Thru Hole
Material: UL94V-0, Class A to Class N
Meets and exceeds IEEE 802.3 requirements
Material: UL94V-0, Class A to Class N
Compliance: RoHS and REACH
SMD Switching Transformer
Compliance: RoHS and REACH
Construction in compliance with: VDE, CSA, IEC60950, IEC 61558, and
High Voltage Flyback
Transformer
LAN AND RJ45 WITH MAGNETIC MODULES
Operating Temp: 0°C to 70°C, extended temperature range available
Application: AC Flux Choke, Differential Choke, Filter, Buck/Boost
SMD Self-Leaded Inductor
SMD High Current Inductor
upon request
Verticle Mount RJ45
Surface Mount RJ45
Compliance: RoHS and REACH compliance
Converter, PFC Inductor
UL60601 (subjected to customer request)
LINEAR TRANSFORMERS | EE, EI AND TOROIDAL TYPE
CURRENT TRANSFORMER | EI AND TOROIDAL TYPE
COMMON MODE CHOKES
RF and BALUN TRANSFORMER
ADSL, HDSL, SHDSL AND VDSL
OTHER TELECOM TRANSFORMER
IMPEDANCE MATCHING, FREQUENCY MIXER AND DIRECTION COUPLER
T1/E1, ISDN, T3/E3, E4/STM-1, FIBRE CHANNEL
Power Output: 1 Watt to 1,000 Watts
Current Capacity: 0.1A to 100A
Current: Up to 50A, Single phase
Frequency: Up to 3GHz
Baud Rate: Up to 100Mbps Baud Rate: Up to 155Mbps
Operating Frequency:
Operating Frequency:
and Three Phase
Impedance Ratio:
Harmonic Distortion:
Harmonic Distortion:
50Hz to 400Hz
50Hz to 500KHz
Inductance: Up to 100mH
Subject to request
Extremely low
Extremely low signal distortion
Topology: Traditional
Accuracy: up to ±0.2%
Operating Frequency:
Package: SMD and Thru Hole
Package: SMD and Thru Hole
Meets and exceeds CCITT G703
Package:
Package: SMD and Thru Hole
Up to 100MHz
Material:
Isolation: IEC950 Basic
Surface Mount and Thru Hole
Material: UL94V-0, Class A to Class F
Split Bobbin Lamination
Transformer
Compliance: RoHS and REACH
Construction in compliance with: VDE, UL, CSA
Material:
1000:1 Currrent Transformer
Package: SMD and Thru Hole
UL94V-0, Class A to Class H
Material: UL94V-0, Class A to Class F
Compliance: RoHS and REACH
Hipot: Up to 4KVRMS
Compliance: RoHS and REACH
Three Phase CMC
UL94V-0, Class A to Class F
Compliance: RoHS and REACH
Audio Transformer
and Supplementary
Compliance: RoHS and REACH
VDSL2 Transformer
Package: SMD and Thru Hole
Material Insulation:
UL94V-0, Class B to Class F
Compliance: RoHS and REACH
Telecom T3/E3 SMD
Magnetic Terms and Measurement
Magnetic Terms and Measurement
1. Short form explanation:-
1
Video Isolation Transforrmers
MEDICAL GRADE MAGNETICS
L or Lp = Primary Inductance, in µH or mH
ton
LL = Leakage Inductance, in µH
Ip1 Ip2
Ns
R1
ton
ton
Is1
Is2
T/2
Ns
T
CR2
Ip2
DWV = Dielectric Withstanding Voltage, in DCV
Hipot = High Potential Isolation, in ACV
Is2
Push-Pull, Full-Wave, Center-Tapped Circuit
SRF: Self Resonance Frequency, in KHz or MHz
Pt = Po ( √2/η + √2 ) Watts
IM = Magnetization Current, in mA
IDC = Lp drops 10%* typical from initial value at this DC current
IRMS = Typical ΔT of 40°C* rise at this RMS current
ISAT = same as IDC, different terms
2
T1
RL = Return Loss, in dB
CMRR = Common Mode Rejection Ratio, in dB
ton
DCMR = Differential Mode to Common Mode Rejection Ratio, in dB
Ip
Ns
Np
R1
ton
ton
Is1
Is2
T/2
Ns
T
T
CR2
2. Differential Choke for RFI.
Is2
Fc = Cut off Frequency
•Medical Grade Transformer constructed
to comply with IEC60950 and UL60601
Reinforced Isolation
•Designed to support Video, Telecom
and Power applications
•Power from 1 Watt to 1000 Watts
IEC950 Transformer
•Switching frequency from
10KHz to 1MHz
•Other safety requirments subject to request
•RoHS and REACH Compliance
CR1
Is1
Ip
Ip
Xtalk = Cross Talk, in dB
DIGITAL AUDIO TRANSFORMER
Full-Wave, Center-Tapped Circuit
(Normally = -3dB)
L = Total Inductance
Pt = Po ( 1/η + √2 ) Watts
C = Total Capacitance
Z = Impedance
π = 3.14
∏√
3
Ip
ton
Ip
3. Common Mode Choke for EMI
Ip
Fc= Corner Frequency
Np
T1
Is
Bridge
Diode
ton
Is
Ns
R1
T
D = Damping factor
Automotive
CR1
+
Np
DCR = Direct Current Resistance, in Ω
IL = Insertion Loss, in dB
•Shielded and non shielded version
available
•Low leakage, low capacitance and
low distortion
•Compatible to AES/EBU and SPDIF
•RoHS and REACH Compliance
-
T
CD = Distributed Capacitance, in pF
Is1
Np
ton
T/2
CWW = Interwinding Capacitance, in pF
Frequency: 10Hz to 12MHz
Package:
Shielded Enclosure or Open frame
•Different sizes for special
requirements
•75Ω:75Ω, 75Ω: 100Ω and
custom impedance
•RoHS and REACH Compliance
T1
Ip1
OCL = Open Circuit Inductance, in µH or mH
Is
T
(normally = 0.707)
Military and Aerospace
L=(Rload*D)/(π*Fc)
Full-Wave Bridge Circuit
C=1/{(π*Fc)2*L}
Pt = Po ( 1/η + 1 ) Watts
Where Pt = Apparent Power, Po = Output Power, h = Efficiency
A. Magnetic Flux caused by common mode current is accumulated to produce impedance
B. Magnetic Flux caused by differential mode current cancels each other so non or
very little impedance is produced.
4
Flyback transformer with flux band and shield connection
4. Current Transformer
Ip*Np=Is*Ns
If Np=1, Ip=Is*Ns
Vout = Is*RT
Vout = Vref
Rt = Vref*Ns/Ip
•Complies with Automotive and Industrial Standards
PPAP, MSDS and Reliablity Testing
ground will give better result on EMI suppression.
Applicable standards:
•Supports -40°C to +130°C and better
MIL-STD-1553B
•Custom Design and Manufacturing of Tranformers, Common
•Designed and Manufactured in
Mode Chokes, Power Inductors and Current Transformers
• Connect the Flux Band and Faraday shield to V_High other than
Solderability: MIl-STD-202, 208D
the USA
•Material Insulation: UL94V-0, Class B to Class H
•Solder: Sn60Pb40 or SN63Pb37
•RoHS and REACH Compliance
•100% Testing per MIl-PRF-27
•Cage Code: 4QGP2
• Diode helps to reduce the flywheel effect on transformer.
4. Straight Wire Inductor
OCL = inductance in µH
Calculation of OCL
L = length of wire, in cm
E (J) = ½ * L * I2
d = diameter of wire, in cm
e = L * (dI/dT)
Our line of magnetic components covers a wide array of products
and applications to meet all your project needs on magnetics.
L = (e*dT)/dI
Military Pulse Transformer
dI = (e*dT)/L
OCL = 0.002*L*[2.3*log(4*L/d - 0.75)]µH
The insulation thickness of the wire play an important role of inductance over rod core
E (Joule) = ½ * L * (e*dT/L)2
E (Joule) = (½ e2*T2)/L
and aircoil. At the same time, the leakage inductance interwinding capacitance are
counting on the distance between 2 wires distance from center to center of the copper.
Please contact MPS for more magnetic technical information.
Please contact MPS for more magnetic technical information.
www.mpsind.com
Magnetic Terms and Measurement
Application Notes on Transformers
1. Short form explanation:
1
Ip1
Ip1
Ip1
䤀瀀㄀
Ip1
OCL = Open Circuit Inductance, in µH or mH
VIDEO ISOLATION TRANSFORMERS
L or Lp = Primary Inductance, in µH or mH
MEDICAL GRADE MAGNETICS
Frequency: 10Hz to 12MHz
Package:
Shielded Enclosure or Open frame
•Different sizes for special
requirements
•75Ω:75Ω, 75Ω: 100Ω and
custom impedance
•RoHS and REACH Compliance
LL = Leakage Inductance, in µH
ton
ton
ton
ton ton
ton
琀漀渀
琀漀渀
ton
ton
Ip1
Ip1
Ip2
Ip1 Ip2
Ip2
䤀瀀㄀
䤀瀀㈀
Ip1
Ip2
CWW = Interwinding Capacitance, in pF
T/2
T/2
T/2
吀⼀㈀
T/2
DCR = Direct Current Resistance, in Ω
R1
R1
R1
刀㄀
R1
ton
ton
ton
ton ton
ton
琀漀渀
琀漀渀
ton
ton
Is1
Is1
Is2
Is1 Is2
Is2
䤀猀㄀
䤀猀㈀
Is1
Is2
Is1
Is2
T/2
T/2
T/2
吀⼀㈀
T/2
Ns
Ns
Ns
一猀
Ns
Ip2
Ip2
Ip2
䤀瀀㈀
Ip2
DWV = Dielectric Withstanding Voltage, in DCV
TT
TT
吀
Is2
Is2
Is2
䤀猀㈀
Is2
PP
us
h-P
ull,
ave,
enter-T
aaapped
ircuit
PP
us
h-P
ull,
ull-W
ave,
CC
enter-T
pped
CC
ircuit
us
h-P
ull,FFFull-W
Full-W
ull-W
ave,CC
enter-T
apped
ppedCC
ircuit
倀甀猀栀ⴀ倀甀氀氀Ⰰ 䘀甀氀氀ⴀ圀愀瘀攀Ⰰ 䌀攀渀琀攀爀ⴀ吀愀瀀瀀攀搀 䌀椀爀挀甀椀琀
us
h-P
ull,
ave,
enter-T
ircuit
Hipot = High Potential Isolation, in ACV
SRF: Self Resonance Frequency, in KHz or MHz
Pt = Po ( √2/η + √2 ) Watts
IM = Magnetization Current, in mA
IDC = Lp drops 10%* typical from initial value at this DC current
IRMS = Typical ΔT of 40°C* rise at this RMS current
ISAT = same as IDC, different terms
2
CMRR = Common Mode Rejection Ratio, in dB
T1
T1
T1
吀㄀
T1
ton
ton
ton
ton
ton ton
琀漀渀
琀漀渀
ton
ton
Is1
Is1
Is2
Is1 Is2
Is2
䤀猀㄀
䤀猀㈀
Is1
Is2
Ns
Ns
Ns
一猀
Ns
R1
R1
R1
刀㄀
R1
T/2
T/2
T/2
吀⼀㈀
T/2
Ns
Ns
Ns
一猀
Ns
TT
TT
吀
TT
TT
吀
CR2
CR2
CR2
䌀刀㈀
CR2
2. Differential Choke for RFI.
Is2
Is2
Is2
䤀猀㈀
Is2
Fc = Cut off Frequency
•Medical Grade Transformer constructed
to comply with IEC60950 and UL60601
Reinforced Isolation
•Designed to support Video, Telecom
and Power applications
•Power from 1 Watt to 1000 Watts
IEC950 Transformer
•Switching frequency from
10KHz to 1MHz
•Other safety requirments subject to request
•RoHS and REACH Compliance
CR1
CR1
CR1
䌀刀㄀
CR1
Is1
Is1
Is1 CR1
䤀猀㄀
Is1
Np
Np
Np
一瀀
Np
Ip
Ip
Ip
䤀瀀
Ip
Xtalk = Cross Talk, in dB
DIGITAL AUDIO TRANSFORMER
Ip
Ip
Ip
䤀瀀
Ip
ton
ton
ton
琀漀渀
ton
Ip
Ip
Ip
䤀瀀
Ip
DCMR = Differential Mode to Common Mode Rejection Ratio, in dB
FF
ull-W
aa
enter-T
apped
ircuit
FF
ull-W
ave,
ve,
CC
enter-T
apped
CC
ircuit
ull-W
ave,
ve,C
enter-T
appedC
ircuit
䘀甀氀氀ⴀ圀愀瘀攀Ⰰ 䌀攀渀琀攀爀ⴀ吀愀瀀瀀攀搀 䌀椀爀挀甀椀琀
ull-W
C
enter-T
apped
C
ircuit
(Normally = -3dB)
L = Total Inductance
Pt = Po ( 1/η + √2 ) Watts
C = Total Capacitance
Z = Impedance
π = 3.14
πππ
3
Ip
Ip
Ip
䤀瀀
Ip
ton
ton
ton
琀漀渀
ton
Ip
Ip
Ip
䤀瀀
Ip
3. Common Mode Choke for EMI
Ip
Ip
Ip
䤀瀀
Ip
Fc= Corner Frequency
Np
Np
Np
一瀀
Np
T1
T1
T1
吀㄀
T1
IsIs
IsIs
䤀猀
Bridge
Bridge
Bridge
䈀爀椀搀最攀 Bridge
Diode
Diode
Diode
䐀椀漀搀攀
Diode
ton
ton
ton
琀漀渀
ton
Ns
Ns
Ns
一猀
Ns
IsIs
IsIs
䤀猀
R1
R1
R1
刀㄀
R1
TT
吀TT
D = Damping factor
AUTOMOTIVE AND INDUSTRIAL
Ns
Ns
Ns
一猀
Ns
Np
Np
Np
一瀀
Np
RL = Return Loss, in dB
low distortion
•Compatible to AES/EBU and SPDIF
•RoHS and REACH Compliance
Np
Np
Np
一瀀
Np
CR2
CR2
CR2
䌀刀㈀
CR2
IL = Insertion Loss, in dB
•Shielded and non shielded version
available
•Low leakage, low capacitance and
CR1
CR1
CR1
䌀刀㄀
Is1
Is1
Is1 CR1
䤀猀㄀
Is1
--ⴀ- - ++
++
⬀
TT
TT
吀
CD = Distributed Capacitance, in pF
T1
T1
T1
吀㄀
T1
IsIs
IsIs
䤀猀
TT
吀TT
(normally = 0.707)
MILITARY AND AEROSPACE
L=(Rload*D)/(π*Fc)
FF
FFull-Wave
ull-Wave
ridge
CCircuit
ircuit
ull-WaveBBBBridge
ridgeCC
ircuit
䘀甀氀氀ⴀ圀愀瘀攀 䈀爀椀搀最攀 䌀椀爀挀甀椀琀
ull-Wave
ridge
ircuit
C=1/{(π*Fc)2*L}
Pt = Po ( 1/η + 1 ) Watts
Where Pt = Apparent Power, Po = Output Power, η = Efficiency
A. Magnetic Flux caused by common mode current is accumulated to produce impedance
B. Magnetic Flux caused by differential mode current cancels each other so none or
very little impedance is produced.
4
Flyback transformer with flux band and shield connection
4. Current Transformer
Ip*Np=Is*Ns
If Np=1, Ip=Is*Ns
Vout = Is*RT
Vout = Vref
Rt = Vref*Ns/Ip
•Complies with Automotive and Industrial Standards
PPAP, IMDS and Reliablity Testing
ground will give better result on EMI suppression.
Applicable standards:
•Supports -40°C to +130°C and better
MIL-STD-1553B
•Custom Design and Manufacturing of Tranformers, Common
•Designed and Manufactured in
Mode Chokes, Power Inductors and Current Transformers
• Connecting the Flux Band and Faraday shield to V_High other than
Solderability: MIL-STD-202, 208D
the USA
•Material Insulation: UL94V-0, Class B to Class H
•Solder: Sn60Pb40 or SN63Pb37
•RoHS and REACH Compliance
•Cage Code: 4QGP2
• Diode helps to reduce the flywheel effect on transformer.
4. Straight Wire Inductor
OCL = inductance in µH
Calculation of OCL
L = length of wire, in cm
E (J) = ½ * L * I2
d = diameter of wire, in cm
e = L * (dI/dT)
Our line of magnetic components covers a wide array of products
and applications to meet all your project needs on magnetics.
L = (e*dT)/dI
Military Pulse Transformer
dI = (e*dT)/L
OCL = 0.002*L*[2.3*log(4*L/d - 0.75)]µH
The insulation thickness of the wire plays an important role of inductance over rod
E (Joule) = ½ * L * (e*dT/L)2
E (Joule) = (½ e2*T2)/L
core and aircoil. At the same time, the leakage inductance interwinding capacitance is
counting on the distance between 2 wires distance from center to center of the copper.
Please contact MPS for more magnetic technical information.
MPS_CMYK.indd 1
Please contact MPS for more magnetic technical information.
www.mpsind.com
12/7/10 5:18 PM