TPS65145
- 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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TPS6514x Triple Output LCD Supply With Linear Regulator and Power Good datasheet (Rev. F) | PDF | HTML | 2016年 6月 29日 |
Application note | Basic Calculation of a Boost Converter's Power Stage (Rev. D) | PDF | HTML | 2022年 10月 28日 | |
Application note | Understanding Undervoltage Lockout in Power Devices (Rev. A) | 2018年 9月 19日 | ||
Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
Application note | Basic calculation of an inverting buck-boost power stage (Rev. A) | 2017年 8月 28日 | ||
Application note | How to Estimate the Output Voltage Range of the Charge Pumps in the TPS6510x | 2017年 8月 8日 | ||
Application note | How to Compensate the TPS6510x and the TPS6514x | 2016年 8月 30日 | ||
Application note | Generation of a VCOM buffer input using PWM signal | 2015年 12月 21日 | ||
Application note | Minimizing Ringing at the Switch Node of a Boost Converter | 2006年 9月 15日 | ||
Application note | Customizing your TPS6510x/TPS6514X | 2004年 6月 22日 |
設計與開發
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封裝 | 引腳 | 下載 |
---|---|---|
HTSSOP (PWP) | 24 | 檢視選項 |
VQFN (RGE) | 24 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。