UCC256402 Series

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

Catalog(3 parts)

Part	Mounting Type	Current - Supply▲▼	Applications	Operating Temperature▲▼	Operating Temperature▲▼	Package / Case▲▼	Package / Case▲▼	Package / Case▲▼	Package / Case	Voltage - Supply▲▼	Voltage - Supply▲▼	Voltage - Input▲▼
Texas Instruments UCC256402ADDBT Power Supply Controller Resonant Converter Controller 14-SOIC	Surface Mount	0.002199999988079071 A	Resonant Converter Controller	-40 °C	125 °C	0.003899999894201755 m	14 ul	0.003911599982529879 m	16-SOIC	26 V	13 V	600 V
Texas Instruments UCC256402DDBR Power Supply Controller Resonant Converter Controller 14-SOIC	Surface Mount	0.002199999988079071 A	Resonant Converter Controller	-40 °C	125 °C	0.003899999894201755 m	14 ul	0.003911599982529879 m	16-SOIC	26 V	13 V	600 V
Texas Instruments UCC256402ADDBR Power Supply Controller Resonant Converter Controller 14-SOIC	Surface Mount	0.002199999988079071 A	Resonant Converter Controller	-40 °C	125 °C	0.003899999894201755 m	14 ul	0.003911599982529879 m	16-SOIC	26 V	13 V	600 V

Key Features

• Optimized low power mode and burst mode algorithmBurst mode with Soft-ON and Soft-OFF periodsMinimized audible noise at no load and standbyUser option to disable burst modeOpto-coupler low power operationEfficiency performance exceeds DoE Level VI and EU CoC Tier-2 External Power Supply StandardsHybrid hysteretic control (HHC)Best-in-class transient responseFast exit from burst modeRobust adaptive dead-time controlIntegrated high-voltage gate driver with 0.6 A source and 1.2 A sink capabilityRobust capacitive region (ZCS) avoidance schemeOver temperature, output over voltage, input under voltage protection, three levels of over current protectionIntegrated high voltage startup functionActive X-capacitor discharge functionOptimized low power mode and burst mode algorithmBurst mode with Soft-ON and Soft-OFF periodsMinimized audible noise at no load and standbyUser option to disable burst modeOpto-coupler low power operationEfficiency performance exceeds DoE Level VI and EU CoC Tier-2 External Power Supply StandardsHybrid hysteretic control (HHC)Best-in-class transient responseFast exit from burst modeRobust adaptive dead-time controlIntegrated high-voltage gate driver with 0.6 A source and 1.2 A sink capabilityRobust capacitive region (ZCS) avoidance schemeOver temperature, output over voltage, input under voltage protection, three levels of over current protectionIntegrated high voltage startup functionActive X-capacitor discharge function

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. 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.