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
开关频率 200 kHz
占空比 95 %
最大占空比 95 %
工作温度Max 70 ℃
工作温度Min 0 ℃
电源电压 14.5V ~ 30V
电源电压Max 35 V
电源电压Min 15 V
安装方式 Through Hole
引脚数 16
封装 DIP-16
长度 19.3 mm
宽度 6.35 mm
高度 4.57 mm
封装 DIP-16
工作温度 0℃ ~ 70℃
产品生命周期 Active
包装方式 Each
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC版本 2015/06/15
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC3854NG4 TI 德州仪器 | 当前型号 | 当前型号 |
UC3854N 德州仪器 | 完全替代 | UC3854NG4和UC3854N的区别 |
UC3854DWTR 德州仪器 | 完全替代 | UC3854NG4和UC3854DWTR的区别 |
UC3854DW 德州仪器 | 完全替代 | UC3854NG4和UC3854DW的区别 |