UC1854 高功率因素前置稳压器_BDTIC代理TI 德州仪器UC1854

UC1854 高功率因素前置稳压器

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.

The UC1854 uses average current-mode control to accomplish fixed-frequency current control with stability and low distortion

	UC1854
UVLO Thresholds On/Off (V)	16/10
Operating Supply (Max) (V)	30
Startup Current (mA)	1.5
Operating Supply Current (mA)	10
Vref (V)	7.5
Vref tol (%)	1.3
Duty Cycle (Max) (%)	95
Practical Operating Frequency (Max) (MHz)	0.2
Pin/Package	16CDIP
Rating	Military

UC1854 特性

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

UC1854 芯片订购指南

器件	状态	温度 (oC)	价格（美元）	封装 \| 引脚	封装数量 \| 封装载体	丝印标记
5962-9326101MEA	ACTIVE	-55 to 125	10.77 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1854J	ACTIVE	-55 to 125	8.78 \| 100u	CDIP (J) \| 16	1 \| TUBE
UC1854J883B	ACTIVE	-55 to 125	10.77 \| 100u	CDIP (J) \| 16	1 \| TUBE

UC1854 质量与无铅数据

器件	环保计划*	铅/焊球涂层	MSL 等级/回流焊峰	环保信息与无铅 (Pb-free)	DPPM / MTBF / FIT 率
5962-9326101MEA	TBD	Call TI	Call TI	5962-9326101MEA	5962-9326101MEA
UC1854J	TBD	A42	N/A for Pkg Type	UC1854J	UC1854J
UC1854J883B	TBD	A42	N/A for Pkg Type	UC1854J883B	UC1854J883B

UC1854 工具与软件

培训内容	型号	软件/工具类型
最常用开关模式电源的功率级设计器	POWERSTAGE-DESIGNER	分析软件