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TPS51427A Status: ACTIVE

Dual D-CAP™Mode Synchronous Step Down Controller for Notebook Power with OOB Function Disabled


      
         
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 TPS51427 TPS51427A
TopologyBuck,D-CAP™ Mode  Buck,D-CAP™ Mode  
Vin(Min)(V)5.5  5.5  
Vin(Max)(V)28  28  
Vout(Min)(V)0.7  0.7  
Vout(Max)(V)5.9  5.9  
Regulated Outputs(#)2  2  
Iout(Max)(A)20  20  
Switching Frequency(Max)(kHz)500  500  
Pin/Package32QFN  32QFN  
Thermal ShutdownYes  Yes  
Vout2(Min)(V)0.5  0.5  
Vout2(Max)(V)2.5  2.5  
Iout2(A)20  20  
RatingCatalog  Catalog  
Duty Cycle(Max)(%)90  90  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • TPS51427: Dual D-CAP™Mode Synchronous Step Down Controller for Notebook Power Rails
  • TPS51218: 3V to 28V Input. 20A Synchronous Step Down Controller with DCAP™ Mode for Notebook Power Supply
  • TPS51221: Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Power Dual Controller
  • TPS5450: 5.5V to 36V, 5A, 500kHz Step Down SWIFT™ Converter
  • TPS61020: Adjustable, 1.5-A Switch, 96% Efficient Boost Converter with Down-Mode, QFN-10
  • TPS63700: Adjustable, -15V Output Inverting DC/DC Converter in 3x3 QFN

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Product Information

Features

  • Fixed-Frequency Emulated On-Time Control; Frequency Selectable from Three Options
  • D-CAP™ Mode Enables Fast Transient Response Less than 100 ns
  • Advanced Ramp Compensation Allows Low Output Ripple with Minimal Jitter
  • Selectable PWM-Only/OOA™/Auto-Skip Modes
  • Wide Input Voltage Range: 5.5 V to 28 V
  • Dual Fixed or Adjustable SMPS:
    • 0.7 V to 5.9 V (Channel1)
    • 0.5 V to 2.5 V (Channel2)
  • Fixed 3.3-V/5-V, or Adjustable Output 0.7-V to 4.5-V LDO; Capable of Sourcing 100 mA
  • Fixed 3.3-VREF Output Capable of Sourcing 10 mA
  • Temperature Compensated Low-Side RDS(on) Current Sensing
  • Adaptive Gate Drivers with Integrated Boost Switch
  • Bootstrap Charge Auto Refresh
  • Integrated Soft Start, Tracking Soft Stop
  • Independent PGOOD and EN for Each Channel
  • OOB Function Disabled. Refer to TPS51427 for OOB-Enabled Device
  • APPLICATIONS
    • Notebook I/O and System Bus Rails
    • Graphics Application
    • PDAs and Mobile Communication Devices

View All Features in Datasheet

Description

The TPS51427A is a dual synchronous step-down controller designed for notebook and mobile communications applications. This device is part of a low-cost suite of notebook power bus regulators that enables system designs with low external component counts. The TPS51427A includes two pulse-width-modulation (PWM) controllers, SMPS1 and SMPS2. The output of SMPS1 can be adjusted from 0.7 V to 5.9 V, while the output of SMPS2 can be adjusted from 0.5 V to 2.5 V. This device also features a low-dropout (LDO) regulator that provides a 5-V/3.3-V output, or adjustable from 0.7-V to 4.5-V output via LDOREFIN. The fixed-frequency emulated adaptive on-time control supports seamless operation between PWM mode under heavy load conditions and reduced frequency operation at light loads for high-efficiency down to the milliampere range.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
TPS51427ARHBRACTIVE-40 to 852.50 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&RPurchase Samples
TPS51427ARHBRG4ACTIVE-40 to 852.50 | 1kuQFN (RHB) | 32 View 3000 | LARGE T&RPurchase Samples
TPS51427ARHBTACTIVE-40 to 852.75 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R
TPS51427ARHBTG4ACTIVE-40 to 852.75 | 1kuQFN (RHB) | 32 View 250 | SMALL T&R

* 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 10:14 AM GMT, 26 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksTPS51427ARHBR
AsiaWPI >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS51427ARHBRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksTPS51427ARHBT
AsiaWPI 780
WorldwideDigiKey 293
TI Lead Time*: 20 WeeksTPS51427ARHBTG4
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
TPS51427ARHBR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51427ARHBRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51427ARHBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
TPS51427ARHBTG4 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 TPS51427A Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
TPS51427 Dual D-CAP™Mode Synchronous Step Down Controller for Notebook Power Rails NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
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.
TPS51221 Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Power Dual Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51123 Dual-Synchronous, Step-Down Controller w/ Out-of-Audio Operation, 100-mA LDOs for Notebook Sys. Pwr 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.
TPS51116 DDR1, DDR2, DDR3 Switcher and LDO NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS40140 Stackable 2 Channel Multiphase or 2 Channel Independent Output Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51513 3V to 28V Input Sync. Step Down Controller with D-CAP+™ Mode and Integrated Gate Drivers NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51117 1.8V to 28V Input Sync. Step Down Controller with DCAP™ Mode, Optimized for Light Load Efficiency NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS51125 Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS5450 5.5V to 36V, 5A, 500kHz Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS61020 Adjustable, 1.5-A Switch, 96% Efficient Boost Converter with Down-Mode, QFN-10 DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-UP REGULATORS TI customers also evaluated this product.
TPS63700 Adjustable, -15V Output Inverting DC/DC Converter in 3x3 QFN DC/DC CONVERTERS (INTEGRATED SWITCH)-INVERTING REGULATORS TI customers also evaluated this product.
TPS54418 2.95V to 6V Input, 4A, 2MHz Synchronous Step Down SWIFT™ DCDC Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
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