UC2854B中文资料PDF规格书
厂商型号 |
UC2854B |
参数属性 | UC2854B 封装/外壳为16-SOIC(0.295",7.50mm 宽);包装为卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带;类别为集成电路(IC) > PFC(功率因数校正);产品描述:IC PFC CTR AVERAGE 120KHZ 16SOIC |
功能描述 | UCx854 High-Power Factor Preregulator |
文件大小 |
1.35319 Mbytes |
页面数量 |
31 页 |
生产厂商 | Texas Instruments(TI) |
企业简称 |
TI1【德州仪器】 |
中文名称 | 德州仪器 (TI)官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-5-26 10:58:00 |
UC2854B规格书详情
1 Features
1• 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
2 Applications
• Offline AC-to-DC Converters
• Medical, Industrial, Telecom, and IT Power
Supplies
• Uninterruptible Power Supplies (UPS)
• Appliances and White Goods
3 Description
The UC1854 provides active-power factor correction
for power systems that otherwise would draw nonsinusoidal
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 linecurrent
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 MOSFETcompatible
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.
产品属性
- 产品编号:
UC2854BDWG4
- 制造商:
Texas Instruments
- 类别:
集成电路(IC) > PFC(功率因数校正)
- 包装:
卷带(TR)剪切带(CT)Digi-Reel® 得捷定制卷带
- 模式:
平均电流
- 频率 - 开关:
80kHz ~ 120kHz
- 电压 - 供电:
10V ~ 20V
- 工作温度:
-40°C ~ 85°C
- 安装类型:
表面贴装型
- 封装/外壳:
16-SOIC(0.295",7.50mm 宽)
- 供应商器件封装:
16-SOIC
- 描述:
IC PFC CTR AVERAGE 120KHZ 16SOIC
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI/德州仪器 |
2023+ |
SOP16 |
5956 |
询价 | |||
TI |
23+ |
SOP16 |
12300 |
全新原装真实库存含13点增值税票! |
询价 | ||
TI |
21+ |
DIP |
16500 |
进口原装正品现货 |
询价 | ||
TI |
23+ |
原厂封装 |
4636 |
原装现货 |
询价 | ||
UC |
22+ |
SOP |
21321 |
原装正品现货 |
询价 | ||
UC |
05+ |
SOP/16 |
384 |
自己公司全新库存绝对有货 |
询价 | ||
TI |
2023+ |
SOP |
16800 |
芯为只有原装,公司现货 |
询价 | ||
TI |
23+ |
16-DIP |
13531 |
确保原装正品,一站式配单-认准水星电子。 |
询价 | ||
TI |
2016+ |
DIP16 |
6022 |
只做原装,假一罚十,公司可开17%增值税发票! |
询价 | ||
UC |
22+ |
SOP |
2960 |
诚信交易大量库存现货 |
询价 |
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