Les convertisseurs flyback grimpent jusqu’à 440 W
Power Integrations公司近日发布新一代TOPSwitchGaN系列集成电路，将反激式转换器的功率上限提升至440W。这一突破为LLC等谐振拓扑结构提供了一种更简洁、更具成本效益的替代方案，同时实现了效率提升与设计优化。
传统反激式转换器通常适用于75W以下的中低功率场景，而LLC谐振转换器虽能处理更高功率，但设计复杂、元件数量多、成本较高。新款TOPSwitchGaN芯片通过集成高压GaN开关、控制器及保护功能，显著简化了高压电源设计。其采用有源钳位反激拓扑，搭配零电压开关技术，使系统效率在230VAC输入条件下可达93%，功率密度超过30W/in³。
该技术特别适用于工业电机驱动、电器电源及高性能计算等需要高功率密度与高可靠性的领域。Power Integrations强调，新方案在保持反激结构简洁性的同时，缩小了与LLC架构在效率上的差距，为设计人员提供了新的高性价比选择。
Power Integrations has extended the power range of flyback converters to 440 W with its new TOPSwitchGaN integrated circuits, positioning them as a simpler and more cost-effective alternative to resonant topologies like LLC. The advancement also promises improved efficiency and streamlined design.
The TOPSwitchGaN family leverages gallium nitride (GaN) technology to achieve this higher power level, which was traditionally the domain of more complex resonant converter architectures. By enabling flyback designs at this scale, the company aims to reduce component count, simplify electromagnetic interference (EMI) filtering, and lower overall system costs for applications such as industrial power supplies, displays, and appliances.
Key improvements include enhanced thermal performance and higher switching frequencies, which contribute to both size reduction and efficiency gains. This development challenges the conventional design trade-off where higher power typically necessitated a shift away from the inherently simpler flyback topology.
Power Integrations repousse les limites des convertisseurs flyback jusqu’à 440 W avec ses circuits TOPSwitchGaN, offrant une alternative plus simple et économique aux topologies résonantes type LLC, tout en améliorant rendement et conception. Power Integrations annonce une avancée intéressante dans la conversion d’énergie avec sa nouvelle famille de circuits intégrés TOPSwitchGaN. Cette innovation étend la […]
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Power Integrations推出新款TOPSwitchGaN IC，将反激转换器功率提升至440W，为LLC谐振拓扑提供了更简单经济的替代方案。
Power Integrations — 美国公司，专注于高压电源转换IC设计。
Monitor — 该技术若被广泛采用，可能影响中高功率电源市场格局。