UCC256302 LLC resonant controller with high voltage start up enabling low standby power | TI.com

UCC256302 (ACTIVE) LLC resonant controller with high voltage start up enabling low standby power

 

Description

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

UCC256302 includes an integrated, high voltage startup function which eliminates the need for an external bias supply, reducing BOM count and minimizing solution size. UCC256302 uses hybrid hysteretic control to provide best in class line and load transient response. The control makes the open 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 during each burst on cycle. The burst power level is programmable and adaptively changes with input voltage, making the optimization of efficiency very easy.

Select the appropriate LLC resonant controller for your design with UCC25630x Selection Guide

Features

  • 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 Compensation Design
  • 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)
  • 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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Flavor Option
  Min   Max Range
Vin  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 150°C

Parametrics

Compare all products in PWM controllers & resonant controllers Email Download to Excel
Part number Order Topology Control method VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) Duty cycle (Max) (%) Gate drive (Typ) (A) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
UCC256302 Order now Half-Bridge
Resonant LLC    
Current     13     30     1000     50     0.6     HV Start-up
Integrated Gate Drivers
Light Load Efficiency
Thermal Shutdown    
Catalog     -40 to 125     SOIC | 14     14SOIC: 59 mm2: 6 x 9.9 (SOIC | 14)    
UCC25600 Order now Half-Bridge
Resonant LLC    
Voltage     11     18     350     50     0.8     Thermal Shutdown     Catalog     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC256301 Order now Half-Bridge
Resonant LLC    
Current     13     30     1000     50     0.6     HV Start-up
Integrated Gate Drivers
Light Load Efficiency
Thermal Shutdown
Wide DC input
X cap discharge integrated    
Catalog     -40 to 125     SOIC | 14     14SOIC: 59 mm2: 6 x 9.9 (SOIC | 14)    
UCC256303 Order now Half-Bridge
Resonant LLC    
Current     11.25     30     1000     50     0.6     Integrated Gate Drivers
Light Load Efficiency
Supports external bias
Thermal Shutdown    
Catalog     -40 to 125     SOIC | 14     14SOIC: 59 mm2: 6 x 9.9 (SOIC | 14)    
UCC256304 Order now Half-Bridge
Resonant LLC    
Current     13     30     1000     50     0.6     HV Start-up
Integrated Gate Drivers
Light Load Efficiency
Thermal Shutdown
Wide AC input
Wide DC input
X cap discharge integrated    
Catalog     -40 to 125     SOIC | 14     14SOIC: 59 mm2: 6 x 9.9 (SOIC | 14)