TI Home > Semiconductors > Power Management > Non-Isolated Switching DC/DC Regulators > DC/DC Controllers (External Switch) >
clear gifTPS51124, Status:ACTIVE
Dual, Synchronous Step Down Controller for Low Voltage System Power
 
clear gif
Product Features and DescriptionFeaturesRequest Free SamplesSamplesTechnical Documents: app notes, user guides, models, and product bulletinsTechnical Documents
Quality: Product Contents, MTBF/FIT Rate and Moisture SensitivityQuality & Pb-Free DataPrice and Packaging InformationPricing/PackagingDownload Application NotesApplication Notes
related productsRelated ProductsInventory, Leadtime, and AvailabilityInventoryModels: BSDL, IBIS, or SPICESimulation Models
Tools & Software: EVMs, CCStudio, and developerTools & Software Download CAD Design ToolsSymbols/FootprintsAccess Reference DesignsReference Designs

 Datasheet
Download Datasheet
Dual Synchronous Step Down Controller For Low Voltage Power Rails (Rev. A) (tps51124.pdf, 1630 KB)
29 Nov 2005 Download

TPS51020 TPS51120 TPS51124TPS51125 TPS51220 TPS51221 TPS5124 
TopologyBuck  Buck  Buck  Buck  Buck  Buck  Buck  
Vin(Min)(V)4.5  4.5  3  5.5  4.5  4.5  4.5  
Vin(Max)(V)28  28  28  28  28  28  15  
Vout(Min)(V)0.9  1.05  0.76  2  1  1  0.9  
Vout(Max)(V)24  5.5  5.5  5.5  12  12  12  
Regulated Outputs(#)2  2  2  2  2  2  2  
Iout(Max)(A)20  20  15  20  20  20  20  
Switching Frequency(Max)(kHz)450  580  420  325  1000  1000  500  
Iq(Typ)(mA)1.4  0.75  0.35  0.55  1.3  1.3  1.1  
Pin/Package30TSSOP  32QFN  24VQFN  24VQFN  32QFN  32QFN  30TSSOP  
Vout2(Min)(V)0.9  1.05  0.76  2  1  1  0.9  
Vout2(Max)(V)24  5.5  5.5  5.5  12  12  12  
Iout2(A)20  20  20  20  20  20  20  
 SamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventory

Product Information
Back to TopFeatures
  • 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
  • Power-Good Signals for Each Channel With Delay Timer
  • Output Discharge During Disable, Fault
  • APPLICATIONS
    • Notebook I/O and Low Voltage System Bus

D-CAP, PowerPAD are trademarks of Texas Instruments.
Back to TopDescription

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 QFN package specified from -40°C to 85°C ambient temperature range.
Analog eLab(TM) Design Center

Customers Who Evaluated This Product Also Evaluated...

These Alternative Products:


These Complementary Products:

What's This?

Customer Tags

No Tags are Available for this Part Number




Related Block Diagrams

Refine Your Selection

- Selection Guides

- Analog & Mixed-Signal: DC/DC Controllers (External Switch)


Support

- KnowledgeBase

- Contact Technical Support

- TI Cross Reference

- Training

- Part Marking Lookup

Pricing/Packaging/CAD Design Tools/Samples
Back to TopPricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Budget Price
($US) | QTY		Industry Standard
(TI Pkg) | Pins		Top Side MarkingStandard Pack Quantity | Package CarrierSymbolsSamples
TPS51124RGERACTIVE-40 to 852.65 | 100uVQFN (RGE) | 24 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51124RGERG4ACTIVE-40 to 852.65 | 100uVQFN (RGE) | 24 View 3000 | LARGE T&R Download CAD Format for this SymbolPurchase Samples
TPS51124RGETACTIVE-40 to 852.90 | 100uVQFN (RGE) | 24 View 250 | SMALL T&R Download CAD Format for this SymbolRequest Free Samples
TPS51124RGETG4ACTIVE-40 to 852.90 | 100uVQFN (RGE) | 24 View 250 | SMALL T&R Download CAD Format for this SymbolRequest Free Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.


Inventory
Back to TopTI Inventory StatusReported Distributor Inventory
TPS51124RGERAs of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 4 Jul 6 Weeks AsiaWPI >1k Buy Now
TPS51124RGERG4As of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 4 Jul 6 Weeks None Reported
View Distributors		  
TPS51124RGETAs of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 7332 | 20 May 6 Weeks AmericasDigiKey >1k Buy Now
 >10k | 1 Jul Mouser Electronics 240 Buy Now
TPS51124RGETG4As of 8:02 AM GMT, 18 May 2008As of 8:02 AM GMT, 18 May 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 7332 | 20 May 6 Weeks AmericasMouser Electronics 250 Buy Now
 >10k | 1 Jul    
View all Distributors
 
* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information. 

Quality & Lead (Pb)-Free Data
Back to TopProduct ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
TPS51124RGER RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51124RGERG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51124RGET RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51124RGETG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details. If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.


Technical Documents
Back to TopDatasheets
Dual Synchronous Step Down Controller For Low Voltage Power Rails (Rev. A) (tps51124.pdf, 1630 KB)
29 Nov 2005 Download
Back to TopApplication Notes
Adaptive Constant On-Time (D-CAPTM) Control Study in Notebook Applications (Rev. B) (slva281b.htm, 8 KB)
04 Dec 2007 Abstract
View Application Notes for DC/DC Controllers (External Switch)
Back to TopUser Guides
Using the TPS51124 (sluu252.pdf, 503 KB)
27 Apr 2006 Download
View User Guides for DC/DC Controllers (External Switch)
Back to TopSimulation Models
Spice Model
TPS51124 PSpice Models (Rev. A) (slvj003a.zip, 111 KB)
16 Apr 2008 zip
TPS51124 TINA Spice Models (slvj004.zip, 251 KB)
25 Jan 2008 zip
Back to TopMore Literature
Notebook Computer Solutions Guide (slyy016.pdf, 956 KB)
01 Aug 2006 Download

Tools & Software
Back to Top Name Part # Company Tool / Software Type
Highly Efficient, Dual Synchronous Buck Converter Evaluation ModuleTPS51124EVM-001Texas InstrumentsDevelopment Boards/EVMs

Related Products
Back to Top Alternative Products - Are similar to TPS51124
Customers Who Evaluated This Product Also Evaluated...
Part #Name Comments
TPS51120Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System PowerTI customers also evaluated this product.
TPS51020Dual, DDR selectable, Synchronous buck controllerTI customers also evaluated this product.
TPS5124TPS5124 Dual Channel Synchronous Step-Down PWM ControllerTI customers also evaluated this product.
TPS51125Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOsTI customers also evaluated this product.
TPS51116DDR1, DDR2, DDR3 Switcher and LDOTI customers also evaluated this product.
TPS51117Wide Vin Synchronous Buck Controller Optimized for Light Load EfficiencyTI customers also evaluated this product.
TPS51220Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power ControllerTI customers also evaluated this product.
TPS51511Synchronous Switcher Controller with 2A LDO for GPU PowerTI customers also evaluated this product.
TPS40140Stackable 2 Channel Multiphase or 2 Channel Independent Output ControllerTI customers also evaluated this product.
Back to Top Complementary Products - Can be used with TPS51124
Customers Who Evaluated This Product Also Evaluated...
Part #NameProduct FamilyComments
UCC27200120V Boot, 3-A Peak, High Frequency, High-Side/Low-Side Driver AC/DC AND DC/DC POWER SUPPLIES-MOSFET DRIVERSTI customers also evaluated this product.
TPS2044BQuad Current-Limited Power Distribution SwitchesPCMCIA AND USB-USB POWER SWITCHESTI customers also evaluated this product.
UCC28051PFC Controller for low to medium power applications requiring compliance with IEC 1000-3-2AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICSTI customers also evaluated this product.
TPS2829Non-inverting High-Speed MOSFET DriverAC/DC AND DC/DC POWER SUPPLIES-MOSFET DRIVERSTI customers also evaluated this product.
BQ24070Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4VBATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENTTI customers also evaluated this product.
TPS612000.3V Input Voltage Boost Converter with 1.5A Switches and 'Down Mode' in a 3x3 QFNDC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORSTI customers also evaluated this product.
TPS62000Adjustable, 600-mA, 95% Efficient Step-Down Converter, CSP-12 and MSOP-10DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORSTI customers also evaluated this product.
TPS6104128-V, 250-mA Switch Boost Converter in SOT-23 for LCD and White LED ApplicationsLIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERSTI customers also evaluated this product.
TPS75003Integrated Triple Supply Power Management IC for Xilinx(R) Spartan(TM)-3 FPGAsPOWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS FOR ASICs AND FPGAsTI customers also evaluated this product.
BQ24032ADual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2VBATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENTTI customers also evaluated this product.
Back to TopRelated Block Diagrams
Notebook PC
Server
All Block Diagrams