Texas Instruments UCC25800 | Demoboard PMP31054

Description

This reference design features an LLC converter controlled by the UCC25800-Q1 (open-loop LLC transformer driver for isolated bias supplies),operating with 9 V, generating three output voltages of 9.0 V with a maximum load current of 50 mA each. An air core transformer was used to avoid the core saturation in the presence of a strong external magnetic field.

Features

• Supplies three isolated outputs, each 9 V, 50 mA from single 9-V source
• Coreless transformer cannot saturate because of external static magnetic field
• Low input-output inter-winding capacitance thanks to resonant topology
• Open loop converter: no feedback compensation
• Possibility to use coreless transformer or printed windings on the PCB

Typical applications

• Electricity meter

More information

• Datasheet
• IC product information