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.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails datasheet (Rev. C) | PDF | HTML | 2014年 12月 31日 |
| User guide | TPS51124 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 2022年 3月 3日 | |
| Application note | Intel Core i3, i5, i7 [Arrandale] Reference Design | 2010年 7月 21日 | ||
| Application note | Adaptive Constant On-Time (D-CAPTM) Control Study in Notebook Applications (Rev. B) | 2007年 12月 4日 |
設計與開發
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| 封裝 | 引腳 | 下載 |
|---|---|---|
| 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