Switch Mode Transformer Signal Transformers
Description
Switch mode transformers, also known as switching transformers, are integral components in switching power supplies and DC-DC converters. They function as energy storage elements, transferring energy from input to output in discrete packets. These transformers are designed to handle various topologies, including push-pull, flyback, boost, forward, buck, and bridge configurations, each serving a specific purpose in energy conversion and regulation.
Working Principle
Switch mode transformers operate by utilizing a chopped waveform input at frequencies of 20 kHz and above. They work under conditions that require special power-grade ferrites with high saturation levels and low losses. The transformers store energy during the input cycle and release it during the output cycle, effectively transferring energy in discrete packets. This process is crucial for maintaining efficiency and stability in power supplies and converters. The output voltage is typically rectified and filtered to provide the desired DC output, with a control circuit adjusting the ON/OFF time of the switched waveform to compensate for any output changes.
Applications
Switch mode transformers are widely used in various applications, including:
- Switching Power Supplies: They are essential in converting AC to DC power efficiently, making them suitable for use in computers, televisions, and other electronic devices.
- DC-DC Converters: These transformers are used in automotive and industrial applications to step up or step down DC voltages as required.
- Telecommunications: They provide isolation and voltage conversion in communication devices and systems.
Advantages over other Signal Transformers
Switch mode transformers offer several advantages over traditional signal transformers:
- Efficiency: They are designed to operate at higher frequencies, which reduces the size of the magnetic components and increases efficiency.
- Versatility: With multiple topologies available, they can be tailored to specific applications, providing flexibility in design.
- Compact Size: The higher operating frequencies allow for smaller transformer sizes, which is beneficial in space-constrained applications.
Limitations
Despite their advantages, switch mode transformers have some limitations:
- Complexity: The design and implementation of switch mode transformers can be complex, requiring careful consideration of the circuit topology and component selection.
- EMI Concerns: Operating at high frequencies can lead to electromagnetic interference (EMI), which must be managed through proper shielding and filtering.
Considerations
When selecting and using switch mode transformers, several factors should be considered:
- Initial Costs: The complexity of design and the need for specialized components can lead to higher initial costs compared to traditional transformers.
- Operating Expense: While they are efficient, the need for additional components to manage EMI and ensure stability can increase operating expenses.
- Durability and Maintenance: The high-frequency operation can lead to wear and tear, necessitating regular maintenance and potential replacements to ensure long-term reliability.
- Accuracy: Ensuring precise voltage conversion and regulation requires careful design and component selection, impacting the overall accuracy of the system.
from DigiKey
XFMR FLYBACK 3.9MH TH [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -25 to 125
- Operating Frequency: 44000 to 132000
- Mounting: Chip Transformer
from Triad Magnetics
Designed for switching power supply applications, Triad current sense transformers are used to detect the current passing through a conductor. These transformers are very reliable and operate effectively over the frequency range of 20 kHz - 200 kHz. They are constructed of UL rated 130 ºC... [See More]
- Other Transformer Types / Applications: Current-Sense; Switch Mode Transformers
- Operating Frequency: 20 to 200000
- Center Tap Options: Both Sides
from DigiKey
XFMR FLYBACK TH [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: 125
- Operating Frequency: 132000
- Mounting: Chip Transformer
from Triad Magnetics
Designed for switching power supply applications, Triad current sense transformers are used to detect the current passing through a conductor. These transformers are very reliable and operate effectively over the frequency range of 20 kHz - 200 kHz. They are constructed of UL rated 130 ºC... [See More]
- Other Transformer Types / Applications: Current-Sense; Switch Mode Transformers
- Operating Frequency: 20 to 200000
- Center Tap Options: Both Sides
from DigiKey
XFMR FLYBACK 940UH TH [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -25 to 125
- Operating Frequency: 132000
- Mounting: Chip Transformer
from Triad Magnetics
Triad's CST25 series of current sense transformers are ideal for monitoring currents in high frequency applications such as switch-mode power supplies, LED lighting, etc. The CST25 series is offered with a built-in sense winding allowing for ease of use. These current sense transformers are fully... [See More]
- Other Transformer Types / Applications: Current-Sense; Switch Mode Transformers; Isolation
- Operating Frequency: 50 to 500000
from DigiKey
FLYBACK TRANSFORMER [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 100000 to 400000
- Mounting: Chip Transformer
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
TRANSF FLYBACK 3W 14V ER9.5 [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 155
- Operating Frequency: 100000 to 400000
- Mounting: Chip Transformer
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
TRANSF GATE DRIVE 2W 15V [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 400000
- Mounting: Chip Transformer
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
TRANSFORMER GATE DRIVE 3W 15V [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 155
- Operating Frequency: 300000 to 400000
- Mounting: Chip Transformer
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
Forward, Push-Pull Converters For For DC/DC Converters SMPS Transformer 3100Vrms Isolation Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Mounting: Chip Transformer
- Operating Temperature: -40 to 125
- Package Type: Connectorized; Surface Mount
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
- Center Tap Options: Both Sides
from DigiKey
Forward, Push-Pull Converters For For DC/DC Converters SMPS Transformer 3100Vrms Isolation Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Mounting: Chip Transformer
- Operating Temperature: -40 to 125
- Package Type: Connectorized; Surface Mount
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
- Center Tap Options: Both Sides
from DigiKey
Forward, Push-Pull Converters For For DC/DC Converters SMPS Transformer 3100Vrms Isolation Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Mounting: Chip Transformer
- Operating Temperature: -40 to 125
- Package Type: Connectorized; Surface Mount
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
Forward, Push-Pull Converters For For DC/DC Converters SMPS Transformer 3100Vrms Isolation Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Mounting: Chip Transformer
- Operating Temperature: -40 to 125
- Package Type: Connectorized; Surface Mount
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
XFMR POE DC/DC CONV 710UH SMD [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 100
- Operating Frequency: 250000
- Mounting: Chip Transformer
from Triad Magnetics
Triad telecommunications transformers are designed to meet the requirements for access over leased private lines or through the dial-up switched telephone network. The TY series transformers are used for a variety of applications including impedance matching, isolation, repeat coil, line balancing,... [See More]
- Other Transformer Types / Applications: Audio; Switch Mode Transformers; Telecom; Isolation
- Standards / Compliance: FCC 68.304 for Dielectric Strength FCC 68.310 for Longitudinal Balance
from DigiKey
XFMR POE DC/DC CONV 166.5UH SMD [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 500000
- Mounting: Chip Transformer
from Triad Magnetics
Triad gate drive transformers are used universally in all high frequency switching topologies to isolate the control circuitry from the line-connected switches. The windings are interleaved for the lowest possible practical leakage inductance. Turn ratios of 1:1 and 1:1.5 optimize coupling and... [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Standards / Compliance: UL; UL
- Operating Frequency: 200000
from DigiKey
XFMR POE DC/DC CONV 90UH SMD [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 250000
- Mounting: Chip Transformer
from DigiKey
XFMR POE DC/DC CONV 153UH SMD [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 250000
- Mounting: Chip Transformer
from DigiKey
TRANSF PLANAR 60W 3.3V OUT [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 200000
- Mounting: Chip Transformer
from DigiKey
XFMR POE DC/DC CONV 150UH SMD [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 250000
- Mounting: Chip Transformer
from DigiKey
XFMR POE DC/DC CONV SMD [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 250000
- Mounting: Chip Transformer
from DigiKey
Pulse Transformer [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 200000
- Mounting: Chip Transformer
from DigiKey
For SMPS Transformer Isolation [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 250000
- Mounting: Chip Transformer
from DigiKey
Flyback Converters For For DC/DC Converters SMPS Transformer 500Vrms Isolation Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Mounting: Chip Transformer
- Operating Temperature: -40 to 125
- Package Type: Connectorized; Surface Mount
from DigiKey
Flyback Converters For For DC/DC Converters SMPS Transformer 500Vrms Isolation Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Mounting: Chip Transformer
- Operating Temperature: -40 to 125
- Package Type: Connectorized; Surface Mount
from DigiKey
Flyback Converters For For DC/DC Converters SMPS Transformer 500Vrms Isolation 391kHz Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 391000
- Mounting: Chip Transformer
from DigiKey
Flyback Converters For For DC/DC Converters SMPS Transformer 500Vrms Isolation 391kHz Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 391000
- Mounting: Chip Transformer
from DigiKey
Flyback Converters For For DC/DC Converters SMPS Transformer 1500Vrms Isolation 200 ~ 300kHz Surface Mount [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Temperature: -40 to 125
- Operating Frequency: 200000 to 300000
- Mounting: Chip Transformer
from Datatronics™
Feature. Designed for Switching Mode Power Supply Applications. High Dielectric Strength Capability 3750VRMS. Frequency Range 20 kHz - 200 kHz. Fully molded construction with center thru hole for Primary Lead. The PT27312 is VDE approved [See More]
- Other Transformer Types / Applications: Current-Sense; Switch Mode Transformers
- Mounting: PCB/SMD
- Operating Frequency: 50000 to 200000
- Package Type: Through Hole Plug-in
from Tamura Corporation of America
Transformer packages may vary based on safety requirements, switching frequency, duty cycle, inductance requirements, and temperature rise performance. Tamura Design Staff should be contacted for complete designs on these “Tamura Preferred ” low cost packages. Mechanical dimensions are... [See More]
- Other Transformer Types / Applications: Switch Mode Transformers
- Operating Frequency: 130000
- Center Tap Options: None
- Power Rating (Watts): 1 to 3