TI TPS92023D

TPS92023 是一款高性能谐振开关 LED 驱动控制器，专为较高功率 LED 照明系统设计。相较于传统半桥转换器，TPS92023 采用 LLC 谐振开关拓扑，以实现极高效率。

可编程死区时间利用最小磁化电流实现零电压开关，从而在多种应用中大幅提升系统效率。

TPS92023 支持两种开关频率模式运行：当负载电流恒定时，固定频率模式可简化设计；当负载电流持续变化时，可变开关频率可实现最优闭环控制。内部振荡器支持 30kHz 至 380kHz 的开关频率范围。该高精度振荡器将最小开关频率偏差限制在 4% 容差以内，使设计人员能够避免功率级的过度设计，从而降低整体系统成本。

The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipments utilizing a half-bridge topology. The TPS92023 incorporates a 0.4-A source and 0.8-A sink for driving a low-cost gate driver transformer, delivering complete system protection functions including overcurrent, UVLO, bias supply OVP and OTP.

• LLC resonant switching driver controller for multi-string LED lighting applications
• Half-bridge topology
• Fixed or variable switching frequency control
• Programmable soft-start time
• Programmable dead time for optimal efficiency
• Simple on/off control
• Overcurrent protection
• Overtemperature protection
• Bias voltage UVLO and OVP
• Integrated gate driver with 0.4A source and 0.8A sink capability
• Operating temperature range: -40°C to 125°C
• SOIC 8-pin package

• Commercial/Industrial LED lighting drivers
• High-bay LED lighting
• Low-bay LED lighting
• Street LED lighting
• Area LED lighting
• Stadium LED lighting
• LED wall wash lighting
• LED digital television (DTV) and monitor backlight ballasts