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TPS51220 Status: ACTIVE

Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller


      
         
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 TPS51120 TPS51123 TPS51124 TPS51125 TPS51220TPS53124 TPS53125 TPS53126 
TopologyBuck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck,D-CAP™ Mode  Buck, D-CAP™Mode  Buck, D-CAP2™ Mode  Buck, D-CAP2™ Mode  
Vin(Min)(V)4.5  5.5  3  5.5  4.5  4.5  4.5  4.5  
Vin(Max)(V)28  28  28  28  28  24  24  24  
Vout(Min)(V)1.05  2.0  0.76  2  1  0.76  0.76  0.76  
Vout(Max)(V)5.5  5.5  5.5  5.5  12  5.5  5.5  5.5  
Regulated Outputs(#)2  2  2  2  2  2  2  2  
Iout(Max)(A)20  20  15  20  20  15  15  15  
Switching Frequency(Max)(kHz)580  460  420  460  1000  380  350  350, 700  
Iq(Typ)(mA)0.75  0.55  0.35  0.55  1.3  0.45  0.45  0.45  
Pin/Package32QFN  24VQFN  24VQFN  24VQFN  32QFN  24VQFN, 28TSSOP  24TSSOP  24TSSOP, 24VQFN  
Thermal ShutdownYes  Yes  Yes  Yes  Yes  Yes  Yes  Yes  
Vout2(Min)(V)1.05  2.0  0.76  2  1  0.76  0.76  0.76  
Vout2(Max)(V)5.5  5.5  5.5  5.5  12  5.5  5.5  5.5  
Iout2(A)20  20  20  20  20  15  15  15  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Duty Cycle(Max)(%)88  93  88  93  99  89  89  89  
 SamplesSamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS51220A: Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Pwr Controller
  • TPS51116: DDR1, DDR2, DDR3 Switcher and LDO
  • TPS51120: Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System Power
  • UC2846: Current Mode PWM Controller
  • TPS2375: IEEE 802.3af PoE Powered Device Controllers
  • UCC28C43: BiCMOS Low-Power Current Mode PWM Controller

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Product Information

Features

  • Input Voltage Range: 4.5 V to 28 V
  • Output Voltage Range: 1 V to 12 V
  • Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
  • Programmable Droop Compensation
  • Voltage Servo Adjustable Soft Start
  • 200 kHz to 1 MHz Fixed Frequency PWM
  • Selectable Current/D-CAP Mode Architecture
  • 180° Phase Shift Between Channels
  • Resistor or Inductor DCR Current Sensing
  • Powergood Output for Each Channel
  • OCL/OVP/UVP/UVLO Protections (OVP Disable Option)
  • Thermal Shutdown (Non-Latch)
  • Output Discharge Function (Disable Option)
  • Integrated Boot Strap MOSFET Switch
  • QFN-32 (RHB)
  • APPLICATIONS
    • Notebook Computer System and I/O Bus
    • Point of Load in LCD TV, MFP

Description

The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out of phase. The TPS51220 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220 is available in the 32 pin 5x5 QFN package and is specified from -40°C to 85°C.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
TPS51220RHBRACTIVE-40 to 852.25 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&R Download CAD Format for this Symbol
TPS51220RHBRG4ACTIVE-40 to 852.25 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&R 
TPS51220RHBTACTIVE-40 to 852.50 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase Samples
TPS51220RHBTG4ACTIVE-40 to 852.50 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R Purchase 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

Reported Distributor Inventory as of 10:04 AM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksTPS51220RHBR
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksTPS51220RHBRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS51220RHBT
AmericasNewark 166
AsiaWPI 132
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS51220RHBTG4
WorldwideDigiKey  Available
View all Distributors  

** 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

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
TPS51220RHBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51220RHBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51220RHBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51220RHBTG4 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

Most useful technical documents for TPS51220 Help

Datasheet

User Guides

View User Guides for DC/DC Controllers (External Switch)

Tools & Software

NamePart # Company Tool / Software Type
TPS51220EVM High Performance Synchronous Buck Using the TPS51220 Evaluation ModuleTPS51220EVMTexas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
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TPS51120 Dual Current Mode, Synch Step-Down Controller With 100-mA Standby Reg For Notebook System Power NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51222 Fixed-Frequency, 99% Duty Cycle Peak Current-Mode Notebook System Power Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
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TPS51218 3V to 28V Input. 20A Synchronous Step Down Controller with DCAP™ Mode for Notebook Power Supply NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
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