Helps power engineers build ultra-thin, high-efficiency 480W AC/DC supplies with fast transient response, compact magnetics, and compliance-ready EMI and power-factor performance.
Texas Instruments has introduced the TIDA-01495 reference design to help design engineers develop compact, high-density AC/DC switched-mode power supplies (SMPS) for space-constrained industrial and consumer applications. The design delivers 480W output power from a universal AC input while maintaining a profile height below 17mm, making it suitable for slim electronics such as 4K/8K televisions, gaming systems, programmable DC power supplies, radar equipment, and avionics platforms.
The reference platform operates with an input voltage range of 85 VAC to 265 VAC and provides a regulated 24V DC output at up to 20A. TI claims peak efficiencies of 94.1% at 230 VAC and 92% at 115 VAC, enabling compliance with 80 Plus Platinum efficiency targets. Full-load efficiency remains above 93.3% at 230VAC, addressing thermal challenges common in thin-profile power systems.
At the front end, the design uses a two-phase interleaved transition-mode power factor correction (PFC) architecture built around the UCC28063A controller. Interleaving reduces input current ripple, shrinks PFC inductor size, and lowers EMI filter requirements, helping engineers reduce both board area and thermal load. The design achieves a power factor greater than 0.99 while meeting IEC 61000-3-2 Class A harmonic current regulations.
For the isolated DC/DC conversion stage, TI employs a half-bridge LLC resonant topology controlled by the UCC256301. The hybrid hysteretic control method improves transient response and allows designers to reduce the size of bulk and output capacitors without compromising stability. This becomes particularly important in thin-form-factor power supplies where vertical component clearance is limited.
The secondary-side synchronous rectification stage uses the UCC24612 to minimise conduction losses through proportional gate-drive control. Additional efficiency optimisation comes from phase shedding in the PFC stage and burst-mode operation in the LLC section, enabling more than 84% efficiency even at 5% load under 230VAC input conditions.
Protection and robustness features include over-voltage protection, short-circuit protection, over-current protection, and zero-current-switching avoidance. The reference design is also engineered to meet EN55011 Class B conducted EMI standards, reducing development effort for compliance testing.
To accelerate prototyping, TI provides downloadable design collateral including schematics, Gerber files, PCB layouts, BOMs, assembly drawings, and performance validation reports through the official design page by clicking here.
