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Wide vin LLC resonant controller with high-voltage start up enabling ultra-low standby power

Inventory: 4,827  

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (℃)
SOIC (DDB) | 14 250 | SMALL T&R
-40 to 125
Package | Pins SOIC (DDB) | 14
Package qty | Carrier: 250 | SMALL T&R
Operating temperature range (℃) -40 to 125
View TI packaging information

Features for the UCC256301

  • 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 II Standard
  • 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)
  • LLC Resonant Controller in SOIC16
    with High Voltage Clearance
  • Create a Custom Design Using the UCC256301 With the WEBENCH® Power Designer

All trademarks are the property of their respective owners.

Description for the UCC256301

The UCC256301 is a fully featured LLC controller with integrated high-voltage gatedriver. It has been designed to pair with a PFC stage to provide a complete power system using aminimum of external components. The resulting power system is designed to meet the most stringentrequirements for standby power without the need for a separate standby power converter, and withPFC stage running all the time. UCC256301 includes a range of features designed to make LLCconverter operation well controlled and robust. This device aims to unburden the LLC designer andallow mainstream applications to benefit from efficiency advantages of the LLC topology.

UCC256301 uses hybrid hysteretic control to provide best in class line and load transientresponse. The control effort is approximately linear proportional to average input current in onecycle. The control makes the open loop transfer function a first order system so that it’s veryeasy to compensate. The system is always stable with proper frequency compensation.

UCC256301 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.


Qty Price (USD)
1-99 1.537
100-249 1.269
250-999 0.912
1,000+ 0.686

Additional package qty | carrier options

Package qty | Carrier 2,500 | LARGE T&R
Inventory 5,192
Qty | Price (USD) 1ku | 0.607 1-99 1.36 100-249 1.123 250-999 0.807 1,000+ 0.607
Custom reel may be available