高功率因数前置稳压器 High Power Factor Preregulator
DESCRIPON
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/divider, a current amplifier, and a fixed-frequency PWM. In addition, the UC1854 contains a power MOSFET compatible gate driver, 7.5V reference, line anticipator, load-enable comparator, low-supply detector,and over-current comparator.
FEATURES
• Control Boost PWM to 0.99 Power Factor
• Limit Line Current Distortion To <5%
• World-Wide Operation Without Switches
• Feed-Forward Line Regulation
• Average Current-Mode Control
• Low Noise Sensitivity
• Low Start-Up Supply Current
• Fixed-Frequency PWM Drive
• Low-Offset Analog Multiplier/Divider
• 1A Totem-Pole Gate Driver
• Precision Voltage Reference
频率 200 kHz
电源电压DC 15.0V min
输出接口数 1
耗散功率 1.00 W
开关频率 200 kHz
最大占空比 95 %
工作温度Max 85 ℃
工作温度Min -40 ℃
电源电压 14.5V ~ 30V
安装方式 Surface Mount
引脚数 16
封装 SOIC-16
长度 10.28 mm
宽度 7.52 mm
高度 2.35 mm
封装 SOIC-16
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC2854DWG4 TI 德州仪器 | 当前型号 | 当前型号 |
UC2854DWTR 德州仪器 | 完全替代 | UC2854DWG4和UC2854DWTR的区别 |
UC2854DW 德州仪器 | 类似代替 | UC2854DWG4和UC2854DW的区别 |
UC3854DWTR-FG4 德州仪器 | 类似代替 | UC2854DWG4和UC3854DWTR-FG4的区别 |