TPS65171 具有反向降压/升压和温度 补偿的 5 通道 LCD 偏置（2.5A 最低 升压 Ilim.，1A 最低 降压 Ilim）
TPS65171 描述
The TPS65171 offers a compact power supply solution to provide all voltages required by a LCD panel for large TV panel applications running from a 12V supply rail. The device is optimized to support LCD technology using ASG gate drive circuits.
The device generates all voltage rails for the TFT LCD bias (VS, VONE, VOFFE, VSS). In addition to that it includes a step-down converter (Vlogic) to provide the logic voltage. By pulling the HVS pin high an implemented high voltage stress test feature programs the boost converter output voltage Vs to higher values. The boost converter operates at a fixed switching frequency of 750kHz. The positive charge pump is running from the boost converter and is regulated by an external transistor
|
TPS65166 |
TPS65171 |
| Vin(Min)(V) |
8.5 |
8.5 |
| Vin(Max)(V) |
14.7 |
14.7 |
| Vout(Min)(V) |
8.5 |
8.5 |
| Vout(Max)(V) |
19 |
19 |
| LDO |
1 |
1 |
| DC/DC Converter |
3 |
3 |
| Charge Pump |
1 |
1 |
| Pin/Package |
40VQFN |
40VQFN |
| Vlogic1 Ilim(Min)(A) |
Buck, 2.4 |
Buck, 1 |
| Vlogic1(Min)(V) |
2.2 |
2.2 |
| VGH / Vpos (Igh) |
External Linear Regulator |
External Linear Regulator |
| VGL / Vneg (Igl) |
External Linear Regulator |
External Linear Regulator |
| HVS |
AVDD |
AVDD |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 85 |
| Switching Frequency(Typ)(kHz) |
750 |
750 |
| AVDD Ilim(Min)(A) |
3.7 |
2.5 |
| Analog Voltage AV/DD(Max)(V) |
19 |
19 |
| Over-Voltage Protection(Max)(V) |
20 |
20 |
| Regulated Outputs(#) |
5 |
5 |
| Isolation Switch |
External |
External |
| Rating |
Catalog |
Catalog |
| Function |
Display Bias |
Display Bias |
| Topology |
Boost, Buck, Inverting Buck/Boost Bias |
Boost, Buck, Inverting Buck/Boost Bias |
| Special Function |
Shunt Regulator VGL2 |
Shunt Regulator VGL2 |
| Iq(Typ)(mA) |
1.2 |
1.2 |
| Target Application |
TV, Monitor 12V |
TV, Monitor 12V |
TPS65171 特性
- 8.5V to 14.7V Input Voltage Range
- VS Output Voltage Range up to 19V
- Boost Converter with 2.5A Switch Current
- Step Down Converter with 1A Switch Current and Adjustable Output 2.5V to 3.3V
- 750kHz Fixed Switching Frequency
- Temperature Compensated Negative Supply
- High Voltage Stress Test (HVS)
- Adjustable Sequencing
- Gate Drive Signal for Isolation Switch
- Short Circuit Protection
- Internal Soft-Start
- 180° Phase Shift Between Buck and Boost
- P2P Short/Open Certified
- Optimized Dual Layer PCB Layout
- Low EMI
- Undervoltage Lockout
- Thermal Shutdown
- Available in 6×6mm 40 Pin QFN Package
- APPLICATIONS
- LCD TV Panel with ASG Technology
TPS65171 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） | Quantity |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS65171RHAR |
ACTIVE |
-40 to 85 |
1.55 | 1ku |
VQFN (RHA) | 40 |
2500 | LARGE T&R |
TPS
65171 |
TPS65171 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 |
| TPS65171RHAR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-3-260C-168 HR |
TPS65171RHAR |
TPS65171RHAR |
TPS65171 应用技术支持与电子电路设计开发资源下载
- TPS65171 数据资料 dataSheet 下载.PDF
- TI 德州仪器照明解决方案产品选型与价格 . xls
- 照明和显示屏电源选择指南 (PDF 1427 KB)
- 笔记本电脑指南 (Rev. A) (PDF 2774 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- PowerPAD™ Made Easy (PDF 57 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)
TPS65171 相关工具
