The TPS92020 is a high-performance resonant-switching LED driver controller. It is designed for use in higher power LED lighting systems. The TPS92020 uses resonant switching in an LLC topology to achieve a very high efficiency compared to traditional half-bridge converters.

The programmable dead time enables zero-voltage switching with minimum magnetizing current, maximizing system efficiency across a variety of applications.

The TPS92020 can operate in two switching frequency modes. Fixed frequency allows for simple design when the load current is constant while variable switching allows for optimal closed-loop control for loads with varying currents. The internal oscillator supports the switching frequencies from 30 kHz to 350 kHz. This high-accuracy oscillator realizes the minimum switching frequency limiting with 4% tolerance, allowing the designer to avoid over-design of the power stage and, thus, further reducing overall system cost.

The programmable soft-start timer maximizes design flexibility demanded by the varied requirements of end equipments utilizing a half-bridge topology. The TPS92020 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 Best Efficiency
• Easy ON/OFF Control
• Overcurrent Protection
• Over-Temperature Protection
• Bias Voltage UVLO and OVP
• Integrated Gate Driver With 0.4-A Source and 0.8-A Sink Capability
• Operating Temperature Range: –40°C to 125°C
• SOIC 8-Pin Package

• Control mode
• Voltage
• Features
• LLC, Adjustable Switching Frequency, Enable/Shutdown, Soft Start, Soft Switching, Thermal Shutdown
• Operating temperature range (C)
• -40 to 125
• Supply voltage (Max) (V)
• 18
• Supply voltage (Min) (V)
• 11.5
• Topology
• Half-Bridge, Resonant
• Rating
• Catalog

TPS92020的完整型号有：TPS92020D、TPS92020DR，以下是这些产品的关键参数及官网采购报价：

TPS92020D，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS92020D的批量USD价格：.82（1000+）

TPS92020DR，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS92020DR的批量USD价格：.683（1000+）

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UCC28810EVM-003 是一款具有功率因数校正功能的 110W 离线式 AC-to-DC LED 电流驱动器。此设计采用三个阶段方法（具有通用输入升压 PFC 阶段和低侧降压阶段），提供了受控制的电流源和半桥接 DC 转换阶段，可以为 4 个 LED 灯串提供隔离。