UC3827-1 降电流/电压馈送推挽 PWM 控制器
UC3827-1 描述
The UC3827 family of controller devices provides an integrated control solution for cascaded buck and push-pull converters. These converters are known as current fed or voltage fed push-pull converters and are ideally suited for multiple output and/or high voltage output applications. In both current fed and voltage fed modes, the push-pull switches are driven at 50% nominal duty cycles and at one half the switching frequency of the buck stage. In the current fed mode, the two switches are driven with a specified over-lap period to prevent ringing and voltage stress on the devices. In the voltage fed mode, the two switches are driven with a specified gap time between the switches to prevent shorting the transformer across the energy storage capacitor and to prohibit excessive currents flowing through the devices.
| |
UC2827-1 |
UC3827-1 |
| Topology |
Full-Bridge, Push-Pull |
Buck, Full-Bridge, Push-Pull |
| Control Method |
Current Mode |
Current Mode |
| Duty Cycle(Max)(%) |
50 |
50 |
| Frequency(Max)(kHz) |
450 |
450 |
| UVLO Thresholds On/Off(V) |
9/8.4 |
9/8.4 |
| Pin/Package |
24PDIP, 24SOIC |
24PDIP, 24SOIC |
| Regulated Outputs(#) |
3 |
3 |
| Operating Temperature Range(°C) |
-40 to 85 |
0 to 70 |
| Rating |
Catalog |
Catalog |
UC3827-1 特性
- Ideal for Multiple Output and/or High Voltage Output Voltage Converters
- Up to 500 kHz Operation
- High Voltage, High Current Floating Driver for Buck Converter Stage
- UC3827-1 Current Fed Controller has Push-Pull Drivers with Overlapping Conduction Periods
- UC3827-2 Voltage Fed Controller has Push-Pull Drivers with Nonoverlapping Conduction Periods
- Average Current Mode, Peak Current Mode or Voltage Mode with Input Voltage Feedforward Control for Buck Power Stage
- Wide Bandwidth, Low Offset, Differential Current Sense Amplifier
- Precise Short Circuit Current Control
UC3827-1 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 |
| UC3827DW-1 |
ACTIVE |
0 to 70 |
4.55 | 1ku |
SOIC (DW) | 24 |
25 | TUBE |
UC3827DW-1 |
| UC3827DW-1G4 |
ACTIVE |
0 to 70 |
4.55 | 1ku |
SOIC (DW) | 24 |
25 | TUBE |
UC3827DW-1 |
| UC3827N-1 |
ACTIVE |
0 to 70 |
4.55 | 1ku |
PDIP (N) | 24 |
15 | TUBE |
UC3827N-1 |
| UC3827N-1G4 |
ACTIVE |
0 to 70 |
4.55 | 1ku |
PDIP (N) | 24 |
15 | TUBE |
UC3827N-1 |
UC3827-1 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 |
| UC3827DW-1 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
|
UC3827DW-1 |
| UC3827DW-1G4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
UC3827DW-1G4 |
UC3827DW-1G4 |
| UC3827N-1 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
|
UC3827N-1 |
| UC3827N-1G4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
N/A for Pkg Type |
UC3827N-1G4 |
UC3827N-1G4 |
UC3827-1 应用技术支持与电子电路设计开发资源下载
- UC3827-1 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)
UC3827-1 工具与软件