The UCC28810 and UCC28811 are general lighting power controllers for low to medium power lumens applications requiring power factor correction and EMC compliance. It is designed for controlling a flyback, buck or boost converter operating in critical conduction mode. It features a transconductance voltage amplifier for feedback error processing, a simple current reference generator for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic and a totem-pole driver for driving an external FET.

In the critical conduction mode operation, the PWM circuit is self-oscillating with the turn-on being governed by a transformer zero energy detector (TZE pin) and the turn-off being governed by the current sense comparator. Additionally, the controller provides features such as peak current limit, restart timer, overvoltage protection (OVP), and enable.

The efficient system performance is attained by incorporation of zero power detect function which allows the controller output to shut down at light load conditions without running into overvoltage. The device also features an innovative slew rate enhancement circuit which improves the large signal transient performance of the voltage error amplifier. The low start-up and operating currents of the device result in low power consumption and ease of start-up. The highly-accurate internal bandgap reference leads to tight regulation of the output voltage in normal and OVP conditions, resulting in higher system reliability. The enable comparator ensures that the controller is off if the feedback sense path is broken or if the input voltage is very low.

There are two key parametric differences between UCC28810 and UCC28811, the UVLO turn-on threshold and the g_M amplifier source current. The UVLO turn-on threshold of the UCC28810 is 15.8 V and for the UCC28811 it is 12.5 V. The g_M amplifier source current for UCC28810 is typically 1.3 mA, and for the UCC28811 it is 300µA. The higher UVLO turn-on threshold of the UCC28810 allows quicker and easier start-up with a smaller VDD capacitance while the lower UVLO turn-on threshold of UCC28811 allows operation of the critical conduction mode controller to be easily controlled by the downstream PWM controller in two-stage power converters. The UCC28810 g_M amplifier also provides a full 1.3-mA typical source current for faster start-up and improved transient response when the output is low either at start-up or during transient conditions. The UCC28811 is suitable for applications such as street lights and larger area luminaires where a two-stage power conversion is needed. The UCC28810 is suitable for applications such as commercial or residential retrofit luminaires where there is no down-stream PWM conversion and the advantages of smaller VDD capacitor and improved transient response can be realized.

Devices are available in the industrial temperature range of –40°C to 105°C. Package offering is an 8-pin SOIC (D) package.

• Transition Mode Controller for Low Implementation Cost of AC Input LED Lighting Applications
• Implements Single Stage Power Factor Corrected LED Driver
• Enhanced Transient Response With Slew-Rate Comparator
• Interfaces with Traditional Wall Dimmers
• Accurate Internal VREF for Tight Output Regulation
• Two UVLO Options
• Overvoltage Protection (OVP), Open-Feedback Protection and Enable Circuits
• ±750-mA Peak Gate Drive Current
• Low Start-Up and Operating Currents
• Lead (Pb)-Free Packages
• APPLICATIONS
  • AC Input General Lighting Applications Using HB LEDs
  • Industrial, Commercial and Residential Lighting Fixtures
  • Outdoor Lighting: Street, Roadway, Parking, Construction and Ornamental LED Lighting Fixtures

All trademarks are the property of their respective owners.

• Topology
• Boost, Buck, Flyback, PFC Controller, Sepic
• Control mode
• Current
• Practical operating frequency (Max) (MHz)
• 0.2
• UVLO thresholds on/off (V)
• 12.5 / 9.7
• Device type
• Controllers
• Operating supply current (mA)
• 4
• Features
• Soft Start
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 105

UCC28811的完整型号有：UCC28811D、UCC28811DR，以下是这些产品的关键参数及官网采购报价：

UCC28811D，工作温度：-40 to 105，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UCC28811D的批量USD价格：.33（1000+）

UCC28811DR，工作温度：-40 to 105，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UCC28811DR的批量USD价格：.275（1000+）

UCC28810EVM-003 — 具有通用线路输入和 PFC 评估模块的 110W 多串 LED 驱动器

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。

PMP22538 — 60W GaN PFC 反激式参考设计

此参考设计使用 UCC28811 功率因数校正 (PFC) 反激式控制器来创建隔离式 60V 输出，能够承受 1A 负载，同时保持较低的输入谐波失真。使用 LMG3411R150 GaN 初级开关可提高效率，实现小巧尺寸和运行期间低温升。

PMP6024 — 100-240VAC 输入、60W、双串 PWM 可调光 LED 驱动器参考设计

PMP6024 是一种离线 LED 驱动器电路，包含一个隔离式功率因素校正恒定输出电压反激式转换器，随后是两个直流/直流降压 LED 电流控制器。它适用于 3500-5000 流明（取决于 LED 选择）的室内或室外区域照明应用。LED 亮度由 3.3V 10kHz PWM 信号控制，此信号转换为 LED 灯串电流的直流电平调整值，从而避免对光输出进行 PWM 调制。