ST family of resonant controllers represents the state-of-the-art in high-efficiency power conversion. While our primary controllers for double-ended (half-bridge) topologies continue to set the standard for high noise immunity through zero voltage switching (ZVS), the portfolio has evolved to include sophisticated digital and combo solutions. These next-generation controllers integrate advanced digital engines and Arm® Cortex®-M0+ cores to manage both PFC and resonant stages, ensuring maximum efficiency across all load conditions, meeting the most stringent global energy-saving regulations. From ultra-compact USB-PD adapters to high-power data center modules, ST provides the ideal control architecture for every resonant design.
ST family of resonant controllers represents the state-of-the-art in high-efficiency power conversion. While our primary controllers for double-ended (half-bridge) topologies continue to set the standard for high noise immunity through zero voltage switching (ZVS), the portfolio has evolved to include sophisticated digital and combo solutions. These next-generation controllers integrate advanced digital engines and Arm® Cortex®-M0+ cores to manage both PFC and resonant stages, ensuring maximum efficiency across all load conditions, meeting the most stringent global energy-saving regulations. From ultra-compact USB-PD adapters to high-power data center modules, ST provides the ideal control architecture for every resonant design.
_Elisa%20CAPPELLETTI.png)
Product types
- L6599A/AT/AF: the industry standard for high-voltage resonant half-bridge control. Features a high-accuracy oscillator (up to 500 kHz) and burst-mode for superior light-load efficiency.
Note: L6599AF is guaranteed for extreme temperatures down to -50°C.
- STNRG599: specialized analog controller introducing phase shift control (PSC). It offers enhanced stability and efficiency for high-end consumer SMPS by modulating the phase between half-bridge transitions.
- L6699: enhanced version featuring adaptive deadtime and a "safe-start" procedure to prevent hard-switching during startup.
- L6598: versatile 600 V driver with integrated timing for softstart, ideal for cost-effective AC-DC adapters.
- STNRG011/011A/012: high-integration digital controllers combining multi-mode PFC and a time-shift LLC resonant engine. All models feature integrated 800 V startup, X-cap discharge, and ultra-low standby power.
- STNRG011A: specifically enhanced with a fast overload protection (OLP) for high-reliability industrial and consumer demands.
- STNRG012: optimized for dual AC and DC input management, perfect for professional lighting.
- STNRG328S/388A: powered by SMED (State Machine Event Driven) technology for hardware-speed reaction times (10ns).
- STNRG328S is dedicated to switched tank (STC) topologies in data center applications.
- The fully integrated SoC family for high-power density chargers. All versions embed an Arm® Cortex®-M0+ core, an active-clamp flyback controller, synchronous rectification, and integrated galvanic isolation for secondary-side digital control.
- ST-ONE: ipioneer SoC, designed for high-efficiency USB-PD adapters up to 100 W.
- ST-ONEHP: high-power evolution supporting USB-PD EPR (Extended Power Range) up to 140 W (28 V/5 A), ideal for high-end laptop adapters.
- ST-ONEMP: specialized version for dual-port chargers, supporting one USB Type-C™ port and one USB Type-A port in a single integrated solution.
Family portrait
Benefits
- Zero voltage switching (ZVS): drastically reduces switching losses and EMI across the entire portfolio.
- Phase shift precision: dedicated control logic for improved dynamic response in high-end designs.
- Hardware-speed digital: SMED technology allows for 10 ns reaction times, surpassing traditional DSP-based control.
- Maximum integration: SoC and combo solutions reduce component count by up to 40%, significantly shrinking PCB footprints.