UCC38050 8 转换模式 PFC 控制器
UCC38050 描述
The UCC38050 and UCC38051 are PFC controllers for low-to-medium power applications requiring compliance with IEC 1000-3-2 harmonic reduction standard. It is designed for controlling a boost preregulator operating in transition mode (also referred to as boundary conduction mode or critical conduction mode operation). It features a transconductance voltage amplifier for feedback error processing, a simple multiplier for generating a current command proportional to the input voltage, a current-sense (PWM) comparator, PWM logic and a totem-pole driver for driving an external FET.
In the transition mode operation, the PWM circuit is self-oscillating with the turn-on being governed by an inductor zero-current detector (ZCD pin) and the turn-off being governed by the current-sense comparator.
|
UCC28050 |
UCC28051 |
UCC38050 |
UCC38051 |
| UVLO Thresholds On/Off(V) |
16/10 |
16/10 |
16/10 |
16/10 |
| Operating Supply(Max)(V) |
18 |
18 |
18 |
18 |
| Startup Current(mA) |
0.075 |
0.075 |
0.075 |
0.075 |
| Operating Supply Current(mA) |
4 |
4 |
4 |
4 |
| Practical Operating Frequency(Max)(MHz) |
0.2 |
0.2 |
0.2 |
0.2 |
| Pin/Package |
8SOIC, 8PDIP |
8PDIP, 8SOIC |
8PDIP, 8SOIC |
8PDIP, 8SOIC |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
UCC38050 特性
- Transition Mode PFC Controller for Low
Implementation Cost
- Industry Pin Compatibility With Improved
Feature Set
- Improved Transient Response With
Slew-Rate Comparator
- Zero Power Detect to Prevent OVP During
Light Load Conditions
- Accurate Internal VREF for Tight Output
Regulation
- Two UVLO Options
- Overvoltage Protection (OVP),
Open-Feedback Protection and Enable
Circuits
- ± 750-mA Peak Gate Drive Current
- Low Start-Up and Operating Currents
- Lead (Pb)-Free Packages
- APPLICATIONS
- Switch-Mode Power Supplies for Desktops,
Monitors, TVs and Set Top Boxes (STBs)
- AC Adapter Front-End Power Supplies
- Electronic Ballasts
UCC38050 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 |
| UCC38050D |
ACTIVE |
-40 to 85 |
0.90 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
38050 |
| UCC38050DG4 |
ACTIVE |
-40 to 85 |
0.90 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
38050 |
| UCC38050DR |
ACTIVE |
-40 to 85 |
0.85 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
38050 |
| UCC38050DRG4 |
ACTIVE |
-40 to 85 |
0.85 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
38050 |
| UCC38050P |
ACTIVE |
-40 to 85 |
0.95 | 1ku |
PDIP (P) | 8 |
50 | TUBE |
38050 |
| UCC38050PE4 |
ACTIVE |
-40 to 85 |
0.95 | 1ku |
PDIP (P) | 8 |
50 | TUBE |
38050 |
UCC38050 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 |
| UCC38050D |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
UCC38050D |
| UCC38050DG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC38050DG4 |
UCC38050DG4 |
| UCC38050DR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
|
UCC38050DR |
| UCC38050DRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
UCC38050DRG4 |
UCC38050DRG4 |
| UCC38050P |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
|
UCC38050P |
| UCC38050PE4 |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
|
UCC38050PE4 |
UCC38050 应用技术支持与电子电路设计开发资源下载
- UCC38050 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)
UCC38050 工具与软件