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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.
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | TPS51124 Dual Synchronous Step-Down Controller for Low-Voltage Power Rails datasheet (Rev. C) | PDF | HTML | 31 Dec 2014 |
| User guide | TPS51124 Buck Controller Evaluation Module User's Guide (Rev. B) | PDF | HTML | 03 Mar 2022 | |
| Application note | Intel Core i3, i5, i7 [Arrandale] Reference Design | 21 Jul 2010 | ||
| Application note | Adaptive Constant On-Time (D-CAPTM) Control Study in Notebook Applications (Rev. B) | 04 Dec 2007 |
For additional terms or required resources, click any title below to view the detail page where available.
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RGE) | 24 | Ultra Librarian |
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