UCC256402 LLC resonant controller with ultra-low standby power and high voltage startup | TI.com

UCC256402
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LLC resonant controller with ultra-low standby power and high voltage startup

LLC resonant controller with ultra-low standby power and high voltage startup - UCC256402
Datasheet
UCC25640x LLC Resonant Controller with Ultra-Low Audible Noise and Standby Power datasheet (Rev. B)
 

Description

The UCC25640x is a fully featured LLC controller with integrated high-voltage gate driver. It has been designed to pair with a PFC controller 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.

UCC25640x provides a highly efficient burst mode with soft-on and soft-off periods to minimize audible noise at standby operation. The burst power level and hysteresis are programmable, simplifying the optimization of efficiency and burst mode operation. Burst mode can also be disabled through pin configuration. UCC25640x uses hybrid hysteretic control to provide best in class line and load transient response.

UCC25640x includes a range of features designed to make LLC converter operation well controlled and protected. It can be used with UCC28056 or UCC28064A PFC controllers, along with UCC24624 synchronous rectifier controller to offer a complete power supply solution.

Features

  • Optimized low power mode and burst mode algorithm
    • Burst mode with Soft-ON and Soft-OFF periods
    • Minimized audible noise at no load and standby
    • User option to disable burst mode
    • Opto-coupler low power operation
    • Efficiency performance exceeds DoE level VI and EU CoC Tier-2 External Power Supply Standards
  • Hybrid hysteretic control (HHC)
    • Best-in-class transient response
    • Fast exit from burst mode
  • Robust adaptive dead-time control
  • Integrated high-voltage gate driver with 0.6 A source and 1.2 A sink capability
  • Robust capacitive region (ZCS) avoidance scheme
  • Over temperature, output over voltage, input
    under voltage protection, three levels
    of over current protection
  • Integrated high voltage startup function
  • Active x-capacitor discharge function

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Output Rectifier
  Min   Max Range
Vin –  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 125°C

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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)
UCC256402 Order now Half-Bridge
Resonant LLC    		 Current     13     30       50     0.6     HV Start-up
Integrated Gate Drivers
Light Load Efficiency
Low Power
Programmable Soft Start
Thermal Shutdown
Zero Voltage Switching    		 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)    
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)    
UCC256403 Order now Half-Bridge
Resonant LLC    		 Current     11.25     30       50     0.6     Integrated gate drivers
Light Load Efficiency
Low Power
Programmable Soft Start
Thermal Shutdown
Zero Voltage Switching    		 Catalog     -40 to 125     SOIC | 14     14SOIC: 59 mm2: 6 x 9.9 (SOIC | 14)    
UCC256404 Order now Half-Bridge
Resonant LLC    		 Current     13     30       50     0.6     HV Start-up
Light Load Efficiency
Low Power
Wide AC input
X cap discharge integrated
Zero Voltage Switching    		 Catalog     -40 to 125     SOIC | 14     14SOIC: 59 mm2: 6 x 9.9 (SOIC | 14)