UC3861 谐振模式电源控制器
UC3861 描述
The UC1861-1868 family of ICs is optimized for the control of Zero Current Switched and Zero Voltage Switched quasi-resonant converters. Differences between members of this device family result from the various combinations of UVLO thresholds and output options. Additionally, the one-shot pulse steering logic is configured to program either on-time for ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861-1864).
The primary control blocks implemented include an error amplifier to compensate the overall system loop and to drive a voltage controlled oscillator (VCO), featuring programmable minimum and maximum frequencies. Triggered by the VCO, the one-shot generates pulses of a programmed maximum width, which can be modulated by the Zero Detection comparator.
|
UC2861 |
UC3861 |
| Topology |
Full-Bridge, Half-Bridge, Push-Pull, Resonant |
Full-Bridge, Half-Bridge, Push-Pull |
| Control Method |
Voltage Mode |
Voltage Mode |
| Duty Cycle(Max)(%) |
50 |
50 |
| Frequency(Max)(kHz) |
450 |
450 |
| UVLO Thresholds On/Off(V) |
16.5/10.5 |
16.5/10.5 |
| Pin/Package |
16SOIC, 20PLCC |
16PDIP, 16SOIC |
| Regulated Outputs(#) |
2 |
2 |
| Operating Temperature Range(°C) |
-40 to 85 |
0 to 70 |
| Rating |
Catalog |
Catalog |
UC3861 特性
- Controls Zero Current Switched (ZCS) or Zero Voltage Switched (ZVS) Quasi-Resonant Converters
- Zero-Crossing Terminated One-Shot Timer
- Precision 1%, Soft-Started 5V Reference
- Programmable Restart Delay Following Fault
- Voltage-Controlled Oscillator (VCO) with Programmable Minimum and Maximum Frequencies from 10kHz to 1MHz
- Low Start-Up Current (150µA typical)
- Dual 1 Amp Peak FET Drivers
- UVLO Option for Off-Line or DC/DC Applications
UC3861 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 |
| UC3861DW |
ACTIVE |
0 to 70 |
1.90 | 1ku |
SOIC (DW) | 16 |
40 | TUBE |
UC3861DW |
| UC3861DWG4 |
ACTIVE |
0 to 70 |
1.90 | 1ku |
SOIC (DW) | 16 |
40 | TUBE |
UC3861DW |
| UC3861N |
ACTIVE |
0 to 70 |
1.90 | 1ku |
PDIP (N) | 16 |
25 | TUBE |
UC3861N |
| UC3861NG4 |
ACTIVE |
0 to 70 |
1.90 | 1ku |
PDIP (N) | 16 |
25 | TUBE |
UC3861N |
UC3861 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 |
| UC3861DW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
|
UC3861DW |
| UC3861DWG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
UC3861DWG4 |
UC3861DWG4 |
| UC3861N |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
|
UC3861N |
| UC3861NG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC3861NG4 |
UC3861NG4 |
UC3861 应用技术支持与电子电路设计开发资源下载
- UC3861 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)
UC3861 工具与软件
