TPS51124
- High Efficiency, Low-Power Consumption, Shutdowns to <1 µA
- Fixed Frequency Emulated On-Time Control, Frequency Selectable
From Three Options - D-CAP Mode Enables Fast Transient Response
- Auto-Skip Mode
- Less Than 1% Initial Reference Accuracy
- Low Output Ripple
- Wide Input Voltage Range: 3 V to 28 V
- Output Voltage Range: 0.76 V to 5.5 V
- Low-Side RDS(ON) Loss-less Current Sensing
- Adaptive Gate Drivers With Integrated Boost Diode
- Internal 1.2-ms Voltage-Servo Soft-Start
- Powergood Signals for Each Channel With Delay Timer
- Output Discharge During Disable, Fault
- APPLICATIONS
- Notebook I/O and Low-Voltage System Bus
All other trademarks are the property of their respective owners
The TPS51124 is a dual, adaptive on-time D-CAP™ mode synchronous buck controller. The part enables system designers to cost effectively complete the suite of notebook power bus regulators with the absolute lowest external component count and lowest standby consumption. The fixed frequency emulated adaptive on-time control supports seamless operation between PWM mode at heavy load condition and reduced frequency operation at light load for high efficiency down to milliampere range. The main control loop for the TPS51124 uses the D-CAP mode that optimized for low ESR output capacitors such as POSCAP or SP-CAP promises fast transient response with no external compensation. Simple and separate power good signals for each channel allow flexibility of power sequencing. The part provides a convenient and efficient operation with supply input voltages (V5IN, V5FILT) ranging from 4.5 V to 5.5 V, conversion voltages (drain voltage for the synchronous high-side MOSFET) from 3 V to 28 V and output voltages from 0.76 V to 5.5 V.
The TPS51124 is available in 24-pin VQFN package specified from –40°C to 85°C ambient temperature range.
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails データシート (Rev. C) | PDF | HTML | 2014/12/31 | ||
| ユーザー・ガイド | TPS51124 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 2022/03/03 | |||
| アプリケーション・ノート | Intel Core i3, i5, i7 [Arrandale] Reference Design | 2010/07/21 | ||||
| アプリケーション・ノート | ノートPCアプリケーションにおけるアダプティブオン時間(D-CAP™)制御方式 (Rev. B 翻訳版) | 英語版 (Rev.B) | 2008/01/10 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
購入と品質
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。