LLC controllers
Achieve enhanced load transient response with minimal output capacitance
Power density
Minimize solution size while maximizing your efficiency
Our latest LLC controllers provide unique control methodologies and integrated features to simplify system design, increase efficiency across loads, and minimize audible noise. Integrated high-voltage startup and hybrid hysteretic control enable a significant reduction in the size of passive components while maintaining excellent transient response, high power density and high average efficiency. Additionally, these solutions provide a highly efficient burst mode with soft-on and soft-off periods to achieve very low standby power and low audible noise in standby operation.
Technical resources
Implementation of wide output LLC in power tool charging and LED lighting applications
Improving Transient Response in LLC Converters Using Hybrid Hysteretic Control (Rev. B)
How to reduce audible noise and power consumption at standby in your AC/DC design
Discover featured applications
Enable high-power charging in battery-powered applications with our LLC controllers
In battery-operated power tools, our LLC controllers address the need for higher power and more efficient charging solutions by supporting applications from 150 W to 1 kW.
Achieve high power density, low standby power and low audible noise in lighting solutions with our LLC controllers
Design challenges in LED lighting solutions include supporting a wide range of output power for dimming, maximizing efficiency over the full load range, and minimizing audible noise. Our LLC controllers address these challenges by maximizing power density and efficiency with low total harmonic distortion.
Featured resources
- UCC256402 – LLC resonant controller with ultra-low standby power and high voltage startup
- UCC25640EVM-020 – UCC25640x half bridge LLC evaluation module
Maximize power denisty and exceed standby power requirements with our LLC controllers
As TV's are increasing in size, while decreasing in width, advanced power solutions are required to maximize power density and efficiency while minimizing standby power. Our LLC controllers combined with our PFC controllers provide the perfect power combo to maximize performance.
Featured resources
- PMP40580 – 180-W universal input PFC + LLC TV power supply reference design
- UCC256404 – LLC resonant controller with ultra-low power, ultra-quiet standby operation and high voltage startup
- PFCLLCSREVM034 – AC to isolated DC EVM with UCC28056B, UCC256404 and UCC24624
- UCC25640x LLC Resonant Controller Features Brief Overview and Bring up Guideline – Application note
- UCC25640x design calculator – Resource
Design & development resources
AC to isolated DC EVM with UCC28056B, UCC256404 and UCC24624
PFCLLCSREVM034 is a 168-W AC/DC supply with a transition-mode power-factor-correction front end and isolated half-bridge LLC resonant converter with synchronous rectification. This EVM accepts AC input from 90 Vrms to 264 Vrms and outputs 12-V DC with 168-W full-load output power.