TPS65170
- 8.6V to 14.7V Input Voltage Range
- 2.8A Boost Converter Switch Current Limit
- Boost Converter Output Voltages up to 18.5V
- Boost and Buck Converter Short-Circuit Protection
- 1.5A Buck Converter Switch Current Limit
- Fixed 750kHz Switching Frequency for Buck and Boost Converters
- Fixed Buck Converter Soft-Start
- Programmable Boost Converter Soft-Start
- Two Charge Pump Controllers to Regulate VGH and VGL
- Control Signal for External High-Side MOSFET Isolation Switch
- Reset Signal With Programmable Reset Pulse Duration
- Thermal Shutdown
- 28-Pin 5×5 mm QFN Package
- APPLICATIONS
- LCD TVs and Monitors
The TPS65170 provides a simple and economic power supply solution for a wide variety of LCD bias applications.
In typical display panel applications, the boost converter generates the display panel’s source voltage VS, the buck converter generates the system’s logic supply VLOGIC, and the two charge pump controllers regulate the external charge pumps generating the display transistors’ on and off supplies VGH and VGL.
By using external transistors to regulate the charge pump output voltage, power dissipation in the IC is significantly reduced, simplifying PCB thermal design and improving reliability.
The TPS65170 also provides a reset circuit that monitors the buck converter output (VLOGIC) and generates a reset signal for the timing controller during power-up.
A control signal can also be generated to control an external MOSFET isolation switch located between the output of the boost converter and the display panel.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | LCD Bias Supply datasheet | 2009年 10月 15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 | Generation of a VCOM buffer input using PWM signal | 2015年 12月 21日 | ||
| User guide | TPS65170 Evaluation Module | 2010年 4月 28日 | ||
| Application note | Minimizing Ringing at the Switch Node of a Boost Converter | 2006年 9月 15日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
TPS65170EVM-559 — 用於 TPS65170 LCD 偏壓供電的評估模組
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
| 封裝 | 引腳 | 下載 |
|---|---|---|
| VQFN (RHD) | 28 | 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