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Power Transformer
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AC/DC
❖ Introduction
• AC/DC Adapter
❖ Advantage
• Customer Design
• Design with different bobbin Ex. OFF-LINE Switch Mode
• Watt range: 5 to 1K Watt Output Power Levels
• Designed to meet appropriate safety standards & OBJY2 Insulation
system
• Flyback, Buck, Resonant(LLC) Half Bridge
❖ Application
• Offline Switching Power
• Power over Ethernet(PSE.PD)
• Industrial Controls
• Metering
• LED Lighting -
DC/DC
❖ Introduction
• DC/DC Converters
❖ Advantage
• Customer Design
• Design with different bobbin Ex.OFF-LINE Switch Mode
• Watt range: 5 to 1K Watt Output Power Levels
• Designed to meet appropriate safety standards & OBJY2 Insulation
system
• Flyback, Buck, Resonant(LLC) Half Bridge
❖ Application
• Offline Switching Power
• Power over Ethernet(PSE.PD)
• Industrial Controls
• Metering
• LED Lighting -
PFC / Power
❖ Introduction
• Custom designs for other inductor and current rating available
❖ Advantage
• Ferrite based SMD inductor with lower core loss.
• Low Profile SMD & Through Hole Packages
• Lower DCR, Tighter tolerance, Higher current, Higher operating
temperatures.
• High current output chokes with approx. 20% roll off.
• Customer Design Available
❖ Application
• Industrial High Current Filter Inductors
• Switching Regulator Inductor(DC TO DC)
• In-Line Noise Filters
• Differential Mode Choke
• Boost PFC Choke
• Voltage Regulator Module (VRM) applications -
Planar Transformer
❖ Introduction
Planar transformers have some advantages over wound transformers.
The cores have wider surface areas than traditional E, EC or EP cores
which allows for smaller numbers of turns in the windings. The wider
core areas also enable lower DC resistance of the copper.
❖ Advantage
• Low profile surface mount planar design
• Lower leakage inductance
• Less AC winding resistance
• Offers high efficiency
• Planar technology offers excellent reliability and repeatability
• Custom designs available
❖ Application
• Used in push-pull, half-bridge and full-bridge topologies
• Use in high-current, isolated or non-isolated power supply
