TPS61187
- Input Voltage 4.5 V to 24 V
- Maximum Output Voltage 38 V
- Integrated 2-A, 40-V MOSFET
- Programmable Switching Frequency 300 kHz to 1 MHz
- Adaptive Boost Output to WLED Voltages
- Wide PWM Dimming Frequency Range
- 100 Hz to 50 KHz for Direct PWM Mode
- 100 Hz to 22 KHz for Frequency Programmable Mode
- 100:1 Dimming Ratio at 20 kHz
- 10000:1 Dimming Ratio at 200 Hz (Direct PWM mode)
- Small External Components
- Integrated Loop Compensation
- Six Current Sinks of 30 mA Maximum
- 1.5% (Typical) Current Matching
- PWM Brightness Interface Control
- PWM Phase Shift Mode Brightness Dimming Method or Direct PWM Dimming Method
- HBM ESD Protection 4 kV
- Programmable Overvoltage Threshold
- Built-in WLED Open/Short Protection
- Thermal Shutdown
The TPS61187 device provides a highly integrated white-light-emitting-diode (WLED) driver solution for notebook LCD backlight. This device has a built-in high efficiency boost regulator with integrated 2-A, 40-V power MOSFET. The six current sink regulators provide high precision current regulation and matching. In total, the device can support up to 60 WLEDs. In addition, the boost output automatically adjusts its voltage to the WLED forward voltage to optimize efficiency.
The TPS61187 supports the automatic phase-shift-dimming method and direct-PWM-dimming method. During phase-shift-PWM dimming, the WLED current is turned on and turned off at the duty cycle controlled by the input PWM signal, and each channel is shifted according to the frequency determined by an integrated pulse-width-modulation (PWM) signal. The frequency of this signal is resistor programmable, while the duty cycle is controlled directly from an external PWM signal input to the PWM pin. During direct PWM dimming, the WLED current is turned on and/or turned off synchronized with the input PWM signal.
For all available packages, see the orderable addendum at the end of the data sheet.技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | TPS61187 White-LED Driver For Notebooks With PWM Interface and Automatic Phase Shift datasheet (Rev. E) | PDF | HTML | 2016年 12月 29日 |
White paper | Common LED Functions and LED Driver Design Considerations | 2020年 9月 21日 | ||
Application note | Some Guidelines and Tips for the LED Driver Application | 2019年 8月 14日 | ||
Application note | Performing Accurate PFM Mode Efficiency Measurements (Rev. A) | 2018年 12月 11日 | ||
Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25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)。
TPS61187EVM-528 — TPS61187EVM-528 評估模組
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
WQFN (RTJ) | 20 | Ultra Librarian |
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
- 認證摘要
- 進行中持續性的可靠性監測
- 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。