Pulse Electronics continues to innovate and bring to market exciting new power magnetic products. Leveraging the research presented in our 2019 APEC paper “Power Transformer Core Optimization Enables Dramatically Increased Power Density” Pulse has released an improved DC/DC transformer series that maintains the industry standard footprint but doubles the component power density to over 11W/cm3. The EP7+ series (PA5099.XXXNL and PA5100.XXXNL) and EP10+ series (PA5130.XXXNL and PA5131.XXXNL) achieve this significant performance enhancement by using three-dimensional finite element analysis to balance the flux utilization in the core, thereby minimizing AC losses and increasing saturation currents. The series is comprised of twenty-four part numbers designed for continuous mode flybacks and active clamp forwards ranging in output power from 17W to 35W. With multiple input voltage ranges (9-57v and 33-57v) and output voltage combinations from 3.3v to 24v they are suitable for a variety of end-applications.
“Pulse is able to use our sophisticated design skills, knowledge of proximity loss minimization and understanding of our customers technical roadmaps to anticipate the market needs and continually improve magnetic component performance”
John Gallagher | Product Marketing, Power PBU, Pulse Electronics
| Pulse Series | PA5099.XXXNLT | PA5100.XXXNLT | PA5130.XXXNLT | PA5131.XXXNLT |
| Platform size | EP7+ 13.6 X 11.0 X 15.5 mm Max |
EP10+ 15.1 X 13.0 X 15.0 mm Max |
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| Power | 17W | 27W | 25W | 35W |
| Topology | CM Flyback | Active Clamp Forward | CM Flyback | Active Clamp Forward |
| Input Voltage | 9-57v or 33-57v | 9-57v or 33-57v | 9-57v or 33-57v | 9-57v or 33-57v |
| Output Voltages | 2 x 3.3 volts 2 x 5.0 volts 2 x 12.0 volts |
2 x 3.3 volts 2 x 5.0 volts 2 x 12.0 volts |
2 x 3.3 volts 2 x 5.0 volts 2 x 12.0 volts |
2 x 3.3 volts 2 x 5.0 volts 2 x 12.0 volts |
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Pulse has verified the simulated component performance by designing two test board power supplies and comparing the actual efficiency and thermal performance between the standard platform (EP7 and EP10) and the optimized version (EP7+ and EP10+). The lab tested results matched the simulation very well showing reduced temperature rise and increased efficiency.
Although primarily designed for PoE and PoE+ applications, including IP phones, security cameras, instrumentation and automation test equipment, they are also suitable for most low voltage (<75v) switch-mode power supply designs including 5G network and datacom implementations.
To see Pulse’s complete line of optimized DC/DC Power Transformers please see our EP7+, EP10+ and EP13+ datasheets. To learn more about our 2019 APEC paper please see our power technical papers.
Samples are available through the web portal or via the Pulse distribution network.