UC3854_TI 支持 50Hz 至 400Hz 范围内线路频率、温度范围为 0°C 至 70°C 的双极性 CCM PFC 控制器

UC3854的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：交流/直流和隔离式直流/直流开关稳压器 - 功率因数校正 (PFC) 控制器
功能描述：支持 50Hz 至 400Hz 范围内线路频率、温度范围为 0°C 至 70°C 的双极性 CCM PFC 控制器
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UC3854的产品详情：

The UC1854 provides active-power factor correction for power systems that otherwise would draw non-sinusoidal current from sinusoidal power lines. This device implements all the control functions necessary to build a power supply capable of optimally using available power-line current while minimizing line-current distortion. To do this, the UC1854 contains a voltage amplifier, an analog multiplier and divider, a current amplifier, and a fixed-frequency PWM.

In addition, the UC1854 contains a power MOSFET-compatible gate driver, 7.5-V reference, line anticipator, load-enable comparator, low-supply detector, and overcurrent comparator.

The UC1854 uses average current-mode control to accomplish fixed-frequency current control with stability and low distortion. Unlike peak current-mode, average current control accurately maintains sinusoidal line current without slope compensation and with minimal response to noise transients.

The high reference voltage and high oscillator amplitude of the UC1854 minimize noise sensitivity while fast PWM elements permit chopping frequencies above 200 kHz. The UC1854 is used in single-phase and three-phase systems with line voltages that vary from 75 V to 275 V and line frequencies across the 50-Hz to 400-Hz range. To reduce the burden on the circuitry that supplies power to this device, the UC1854 features low starting supply current.

These devices are available packaged in 16-pin plastic and ceramic dual in-line packages, and a variety of surface-mount packages.

UC3854的优势和特性：

Control Boost PWM to 0.99 Power Factor
Limit Line-Current Distortion to < 5%
World-Wide Operation Without Switches
Feedforward Line Regulation
Average Current-Mode Control
Low Noise Sensitivity
Low Startup Supply Current
Fixed-Frequency PWM Drive
Low-Offset Analog Multiplier and Divider
1-A Totem-Pole Gate Driver
Precision Voltage Reference

UC3854的参数（英文）：

Topology
Boost
Control mode
CCM
Practical operating frequency (Max) (MHz)
0.2
UVLO thresholds on/off (V)
16/10
Device type
Controllers
Operating supply current (mA)
10
Features
Average Current Mode, Continuous Control Mode , Enable
Rating
Catalog
Operating temperature range (C)
0 to 70

UC3854具体的完整产品型号参数及价格（美元）：

UC3854的完整型号有：UC3854DW、UC3854DWTR、UC3854N，以下是这些产品的关键参数及官网采购报价：

UC3854DW，工作温度：0 to 70，封装：SOIC (DW)-16，包装数量MPQ：40个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC3854DW的批量USD价格：1.463（1000+）

UC3854DWTR，工作温度：0 to 70，封装：SOIC (DW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UC3854DWTR的批量USD价格：1.238（1000+）

UC3854N，工作温度：0 to 70，封装：PDIP (N)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网UC3854N的批量USD价格：1.631（1000+）

UC3854的评估套件：

UC3854的电路图解：

UC3854的评估套件：