TPS65140
- 2.7-V to 5.8-V Input Voltage Range
- 1.6-MHz Fixed Switching Frequency
- 3 Independent Adjustable Outputs
- Main Output up to 15 V With <1% Typical Output
Voltage Accuracy - Virtual Synchronous Converter Technology
- Negative Regulated Charge Pump Driver VO2
- Positive Charge Pump Converter VO3
- Auxiliary 3.3-V Linear Regulator Controller
- Internal Soft Start
- Internal Power-On Sequencing
- Fault Detection of All Outputs (TPS65140 and
TPS65145) - No Fault Detection (TPS65141)
- Thermal Shutdown
- System Power Good
- Available in 24-Pin HTSSOP and 24-Pin VQFN
PowerPAD™ Packages
The TPS6514x series offers a compact and small power supply solution to provide all three voltages required by thin film transistor (TFT) LCD displays. The auxiliary linear regulator controller can be used to generate a 3.3-V logic power rail for systems powered by a 5-V supply rail only.
The main output VO1 is a 1.6-MHz fixed frequency PWM boost converter providing the source drive voltage for the LCD display. The device is available in two versions with different internal switch current limits to allow the use of a smaller external inductor when lower output power is required. The TPS65140 and TPS65141 has a typical switch current limit of 2.3 A and the TPS65145 has a typical switch current limit of 1.37 A. A fully integrated adjustable charge pump doubler or tripler provides the positive LCD gate drive voltage. An externally adjustable negative charge pump provides the negative gate drive voltage. Due to the high 1.6-MHz switching frequency of the charge pumps, inexpensive and small 220-nF capacitors can be used.
Additionally, the TPS6514x series has a system power good output to indicate when all supply rails are acceptable. For LCD panels powered by 5 V the device has a linear regulator controller using an external transistor to provide a regulated 3.3-V output for the digital circuits. For maximum safety, the TPS65140 and TPS65145 goes into shutdown as soon as one of the outputs is out of regulation. The device can be enabled again by toggling the input or the enable (EN) pin to GND. The TPS65141 does not enter shutdown when one of its outputs is below its power good threshold.
技术文档
类型 | 标题 | 下载最新的英语版本 | 日期 | |||
---|---|---|---|---|---|---|
* | 数据表 | TPS6514x Triple Output LCD Supply With Linear Regulator and Power Good 数据表 (Rev. F) | PDF | HTML | 2016年 6月 29日 | ||
应用手册 | Basic Calculation of a Boost Converter's Power Stage... (Rev. D) | PDF | HTML | 2022年 11月 21日 | |||
应用手册 | 升压转换器功率级的基本计算 (Rev. D) | PDF | HTML | 英语版 (Rev.D) | PDF | HTML | 2022年 11月 11日 | |
应用手册 | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018年 9月 19日 | ||||
选择指南 | 电源管理指南 2018 (Rev. K) | 2018年 7月 31日 | ||||
选择指南 | 电源管理指南 2018 (Rev. R) | 2018年 6月 25日 | ||||
应用手册 | Basic calculation of an inverting buck-boost power stage (Rev. A) | 2017年 8月 28日 | ||||
应用手册 | How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x | 2017年 8月 8日 | ||||
应用手册 | How to Compensate the TPS6510x and the TPS6514x | 2016年 8月 30日 | ||||
应用手册 | Generation of a VCOM buffer input using PWM signal | 2015年 12月 21日 | ||||
应用手册 | 最小化升压转换器开关节点处的振铃 | 英语版 | 2008年 7月 15日 | |||
应用手册 | Customizing your TPS6510x/TPS6514X | 2004年 6月 22日 | ||||
EVM 用户指南 | TPS65140EVM-031 User's Guide | 2004年 2月 5日 |
设计和开发
如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。
TPS65100EVM-030 — TPS65100 评估模块
TPS65140EVM-031 — TPS65140 评估模块
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---|---|---|
HTSSOP (PWP) | 24 | 查看选项 |
VQFN (RGE) | 24 | 查看选项 |
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