TI Home > Semiconductors > Power Management > Fusion Digital Power(TM) Control Solutions > Fusion Digital Power(TM) Control Drivers >

UCD7231 Status: ACTIVE

Digital Control Compatible Synchronous Buck Gate Driver with Current Sense and Fault Protection


      
         
Alert me about changes<br/>to this product

 UCD7230 UCD7230A UCD7231
No. of Outputs1  1  1  
Driver ConfigurationDual  Dual  Dual  
VCC(Min)(V)4.5  4.5  4.7  
VCC(Max)(V)15  15  15  
Peak Output Current(A)4  4  6  
Prop Delay(ns)30  30  50  
Input ThresholdCMOSTTL  CMOSTTL  COMSTTL  
Pin/Package20HTSSOP, 20VQFN  20VQFN  20QFN  
Operating Temp Range(Celsius)-40 to 105  -40 to 105  -40 to 125  
 SamplesSamplesSamples
 InventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UCD7230: Digital Power Compatible Synchronous Buck Driver
  • UCD7230A: Digital Power Compatible Synchronous Buck Driver
  • UCD9246: Digital PWM System Controller
  • TPS65720: 2-Channel Power Management IC with Battery Charger, One Step-Down Converter and One LDO
  • TPS51621: Dual Phase, D-CAP+™Mode Step-Down Controller for IMVP6.5 CPU/GPU Vcore

Product Information

Features

  • Dual High Current Drivers.
  • Full Compatibility with TI Fusion Digital Power Supply Controllers, such as UCD91xx and UCD92xx Families
  • Operational to 2 MHz Switching Frequency
  • High-Side FET and Output Current Limit Protection with Independently Adjustable Thresholds
  • Fast High-Side Over-Current Sense Circuit with Fault Flag Output – Prevents Catastrophic Current Levels on a Cycle by Cycle Basis
  • Differential High-Gain Current Sense Amplifier
  • Voltage Proportional to Load Current Monitor Output
  • Wide Input Voltage Range: 4.7 V to 15 V
    Operation to 2.2 V Input Supported with an External 4.5-6.5 V Bias Supply
  • Onboard Regulated Supplies for Gate Drive and Internal Circuits
  • Integrated Thermal Shutdown
  • Selectable Operation Modes:
    • PWM plus Synchronous Rectifier Enable (SRE) with Automatic Dead-Time Control
    • Direct High-Gate and Low-Gate Inputs for Direct FET Control
  • 3-State PWM Input for Power Stage Shutdown
  • UVLO Housekeeping Circuit
  • Rated from –40°C to +125°C Junction Temperature
  • Pb (Lead) Free Packaging
  • APPLICATIONS
    • Digitally-Controlled Synchronous-Buck Power Stages for Single- and Multi-Phase Applications
    • Digitally-Controlled Power Modules

View All Features in Datasheet

Description

The UCD7231 high current driver is specifically designed for digitally-controlled, point-of-load, synchronous buck switching power supplies. Two driver circuits provide high charge and discharge current for the high-side NMOS switch and the low-side NMOS synchronous rectifier in a synchronous buck circuit. The MOSFET gates are driven to +6 V by an internally regulated VGG supply. The internal VGG regulator can be disabled to permit the user to supply their own gate drive voltage. This flexibility allows a wide power conversion input voltage range of 2.2 to 15 V. Internal under voltage lockout (UVLO) logic insures VGG is good before allowing chip operation.

A drive logic block allows operation in one of two modes selected by the SRE Mode pin.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
UCD7231RTJRACTIVE-40 to 1250.60 | 1kuQFN (RTJ) | 20 View 3000 | LARGE T&RPurchase Samples
UCD7231RTJTACTIVE-40 to 1250.70 | 1kuQFN (RTJ) | 20 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 8:26 AM GMT, 21 Mar 2010
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCD7231RTJR
None Reported
View Distributors
TI Lead Time*: 10 WeeksUCD7231RTJT
None Reported
View Distributors
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
UCD7231RTJR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCD7231RTJT 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 UCD7231 Help

Datasheet

Tools & Software

NamePart #CompanySoftware/Tool Type
Digital Power SoftwareFUSION_DIGITAL_POWER_DESIGNER Texas Instruments Application Software 
Fusion Digital Power Manufacturing ToolFUSION_MFR_GUI Texas Instruments Application Software 

Part # Name Product Family Comments
UCD9112   Digital Dual-Phase Synchronous Buck Controller   FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS - FUSION DIGITAL POWER(TM) CONTROLLERS      
UCD9220   Digital PWM System Controller   FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS - FUSION DIGITAL POWER(TM) CONTROLLERS      
UCD9240   Digital Point of Load System Controller   FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS - FUSION DIGITAL POWER(TM) CONTROLLERS      
Customers Who Evaluated This Product Also Evaluated...
UCD7230 Digital Power Compatible Synchronous Buck Driver FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) CONTROL DRIVERS TI customers also evaluated this product.
UCD7230A Digital Power Compatible Synchronous Buck Driver FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) CONTROL DRIVERS TI customers also evaluated this product.
UCD9246 Digital PWM System Controller FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) CONTROLLERS TI customers also evaluated this product.
TPS65720 2-Channel Power Management IC with Battery Charger, One Step-Down Converter and One LDO POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER TI customers also evaluated this product.
TPS51621 Dual Phase, D-CAP+™Mode Step-Down Controller for IMVP6.5 CPU/GPU Vcore NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
UCD9220 Digital PWM System Controller FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) CONTROLLERS TI customers also evaluated this product.
UCD9240 Digital Point of Load System Controller FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) CONTROLLERS TI customers also evaluated this product.
TPS74801 Single Output LDO, 1.5A, Adj. (0.8 to 3.6V), Programmable Soft-Start LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
TPS74401 Single Output LDO, 3.0A, Adj.(0.8 to 3.3V), Fast Transient Response, Programmable SoftStart LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
TPS60150 140mA, 5V Charge Pump in 2x2 SON INDUCTORLESS DC/DC REGULATORS (CHARGE PUMPS)-STEP-UP CHARGE PUMP REGULATORS TI customers also evaluated this product.
UCD3020 Fully Programmable Digital Power Controller with up to Two Regulated Outputs and Six DPWM Outputs FUSION DIGITAL POWER(TM) CONTROL SOLUTIONS-FUSION DIGITAL POWER(TM) CONTROLLERS TI customers also evaluated this product.
TPS54290 4.5V to 18V Input, 1.5/2.5A, 300 kHz Dual Synchronous Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.

Support and Community

Customer Tags Help

No Tags are Available for this Part Number

Other Support



Click Here