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LLC resonant controller with high voltage start up enabling low standby power

Availability: 3,801


Package | PIN: SOIC (DDB) | 14
Temp: Q (-40 to 125)
Package qty | Carrier: 250 | SMALL T&R
Qty Price
1-99 $1.46
100-249 $1.27
250-999 $0.87
1,000+ $0.65


  • Integrated High Voltage Startup
    • Eliminates Need for External
      Bias Supply
  • Best-in-Class Transient Response
  • Hybrid Hysteretic Control (HHC)
    • Best-in-Class Transient Response
    • Easy CompensationDesign
  • Optimized Low Power Features Enable 75 mW
    Standby Power Design with PFC on
    • Advanced Burst Mode
      Opto-Coupler Low Power Operation
    • Helps Enable Compliance to CoC Tier IIStandard
  • Fast Exit from Burst Mode
  • Improved Capacitive Region Avoidance Scheme
  • Adaptive Dead-Time
  • Internal High-Side Gate Drivers
    (0.6-A and 1.2-A Capability)
  • Robust Soft Start with No Hard Switching
  • Over Temperature, Output Over Voltage, Input
    Over and Under Voltage Protection with
    Three Levels of Over Current Protections
  • Wide Operating Frequency Range
    (35 kHz to 1 MHz)
  • Select the appropriate LLC resonant controller for your design with UCC25630x Selection GuideUCC25630x Selection Guide
  • Create a Custom Design Using the UCC256302 With the WEBENCH® Power Designer

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Texas Instruments  UCC25630-2DDBT

The UCC256302 is a fully featured LLC controller with integrated high-voltage gatedriver. It has been designed for use in offline AC-DC or isolated DC-DC to provide a complete powersystem using a minimum of external components. The resulting power system is designed to meet themost stringent requirements for standby power without the need for a separate standby powerconverter.

UCC256302 includes an integrated, high voltage startup function which eliminates the needfor an external bias supply, reducing BOM count and minimizing solution size. UCC256302 uses hybridhysteretic control to provide best in class line and load transient response. The control makes theopen loop transfer function a first order system so that it’s very easy to compensate.

UCC256302 provides a high efficient burst mode with consistent burst power level duringeach burst on cycle. The burst power level is programmable and adaptively changes with inputvoltage, making the optimization of efficiency very easy.

Select the appropriate LLC resonant controller for your design with UCC25630x SelectionGuide