TPS51285A
- Input Voltage Range: 5 V to 24 V
- Output Voltages: 5 V and 3.3 V
(Adjustable Range ±10%) - Built-in, 100-mA, 5-V and 3.3-V
LDOs - Clock Output for Charge-Pump
- ±1% Reference Accuracy
- Adaptive On-Time D-CAP Mode Control
Architecture with 400 kHz (CH1) and
475 kHz (CH2) Frequency - Auto-skip and ULQ modes for long
battery life in system stand-by mode - Internal 0.8-ms Voltage Servo Soft-Start
- Low-Side RDS(on) Current Sensing Scheme
- Built-In Output Discharge Function
- Separate Enable Input for Switchers
- Dedicated OC Setting Terminals
- Power Good Indicator
- OVP, UVP and OCP Protection
- Non-Latch UVLO and OTP Protection
- 20-Pin, 3 mm × 3 mm, QFN (RUK)
The TPS51285A and TPS51285B are cost-effective, dual synchronous buck controllers with 5-V and 3.3-V LDOs, targeted for notebook system-power supply solutions. The device achieves low power consumption by the use of auto-skip and ULQ™ modes, which is beneficial for long battery life in system stand-by mode. The 256-kHz VCLK output is provided to drive an external charge pump, generating gate drive voltage for the load switches with minimum power consumption in the main converter. The device employs adaptive on-time D-CAP™ mode control which enables fast load transient response without external compensation network. The TPS51285A/B operates with supply input voltage ranging from 5V to 24V and supports output voltages of 5 V and 3.3 V. The TPS51285A and TPS51285B are available in a 20-pin 3 x 3 (mm) QFN package and is specified from –40°C to 85°C.
技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | Ultra-Low Quiescent (ULQ) Dual Synchronous Step-Down Controller with 5V/ 3.3V datasheet | 2013/4/12 | |||
| 應用說明 | Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. B) | PDF | HTML | 2021/4/29 | |||
| 應用說明 | Non-Isolated Point-of-Load Solutions for Elkhart Lake in Industrial PC App. (Rev. A) | PDF | HTML | 2020/5/21 |
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)。
TIPA-050005 — 適用於 PC 應用中 Tiger Lake 的非隔離負載點解決方案
Intel® Tiger Lake 微架構等先進處理器和平台需要負載點 (POL) 解決方案，來滿足記憶體、低功耗 CPU 軌，以及一系列充電電池或 12V 輸入匯流排的 3.3V 和 5V 軌需求。
此電源供應設計以最新 DC/DC 轉換器為亮點，展示可因應 PC 應用中一般 Tiger Lake 電源需求的功能。
TIPA-050016 — 適用於工業 PC 應用中 Elkhart Lake 的非隔離負載點解決方案
Intel® Elkhart Lake 微架構等先進處理器和平台需要負載點 (POL) 解決方案，來滿足記憶體、低功耗 CPU 軌，以及一系列充電電池或 12V 輸入匯流排的 3.3V 和 5V 軌需求。
此電源供應器設計以最新的 DC/DC 轉換器為亮點，這些轉換器提供高性能電源管理解決方案，可延長電池續航力，同時滿足工業 PC 應用中 Elkhart Lake 平台的電源需求。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (RUK) | 20 | Ultra Librarian |
訂購與品質
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。