UC2854 高功率因数前置稳压器
UC2854 描述
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.
|
UC2854 |
UC3854 |
| UVLO Thresholds On/Off(V) |
16/10 |
16/10 |
| Operating Supply(Max)(V) |
30 |
30 |
| Startup Current(mA) |
1.5 |
1.5 |
| Operating Supply Current(mA) |
10 |
10 |
| Vref(V) |
7.5 |
7.5 |
| Vref tol(%) |
1.3 |
1.3 |
| Duty Cycle(Max)(%) |
95 |
95 |
| Practical Operating Frequency(Max)(MHz) |
0.2 |
0.2 |
| Pin/Package |
16PDIP, 16SOIC |
16PDIP, 16SOIC, 20PLCC |
| Rating |
Catalog |
Catalog |
UC2854 特性
- Complete 8-pin Power Factor Solution
- Reduced External Components
- RMS Line Voltage Compensation
- Precision Multiplier/Squarer/Divider
- Internal 75kHz Synchronizable Oscillator
- Average Current Mode PWM Control
- Overvoltage Protection Comparator
- High Current, Clamped Gate Driver
UC2854 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 |
| UC2854D |
ACTIVE |
-40 to 85 |
2.30 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
UC2854D |
| UC2854DG4 |
ACTIVE |
-40 to 85 |
2.30 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
UC2854D |
| UC2854DTR |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
UC2854D |
| UC2854DTRG4 |
ACTIVE |
-40 to 85 |
1.90 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
UC2854D |
| UC2854N |
ACTIVE |
-40 to 85 |
2.30 | 1ku |
PDIP (N) | 8 |
50 | TUBE |
UC2854N |
| UC2854NG4 |
ACTIVE |
-40 to 85 |
2.30 | 1ku |
PDIP (N) | 8 |
50 | TUBE |
UC2854N |
UC2854 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 |
| UC2854D |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
UC2854D |
| UC2854DG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC2854DG4 |
UC2854DG4 |
| UC2854DTR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
UC2854DTR |
| UC2854DTRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC2854DTRG4 |
UC2854DTRG4 |
| UC2854N |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
|
UC2854N |
| UC2854NG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC2854NG4 |
UC2854NG4 |
UC2854 应用技术支持与电子电路设计开发资源下载
- UC2854 数据资料 dataSheet 下载.PDF
- TI 德州仪器AC/DC 和 DC/DC 电源产品选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF
1305 KB)
- Analog-to-Digital Converter Grounding Practices Affect System
Performance (PDF 56 KB)
- Principles of Data Acquisition and Conversion (PDF 50 KB)
- Interleaving Analog-to-Digital Converters (PDF 64 KB)
- What
Designers Should Know About Data Converter Drift (PDF 95 KB)
- Giving Delta-Sigma Converters a Gain Boost with a Front End
Analog Gain Stage (PDF 70 KB)
- Programming Tricks for Higher Conversion Speeds Utilizing Delta
Sigma Converters (PDF 105 KB)
UC2854 工具与软件