本帖最后由 xyz549040622 于 2017-10-24 20:32 编辑
TI今日正式推出具有集成高电压栅极驱动器的新型LLC谐振控制器，待机功率可保持在小于40mW，同时，它也是提供高效端到端电源转换解决方案的TI高压产品系列中的最新产品，可以满足工程师对于未来设计的需求，突破性的待机功耗和效率可简化设计且降低系统成本，而该器件也可在终端设备的使用寿命内实现可靠运行。
描述
The UCC256301 is a fully featured LLC controller with integrated high-voltage gate driver. It has been designed to pair with a PFC stage 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, and with PFC stage running all the time. UCC256301 includes a range of features designed to make LLC converter operation well controlled and robust. This device aims to unburden the LLC designer and allow mainstream applications to benefit from efficiency advantages of the LLC topology.
UCC256301 uses hybrid hysteretic control to provide best in class line and load transient response. The control effort is approximately linear proportional to average input current in one cycle. The control makes the open loop transfer function a first order system so that it’s very easy to compensate. The system is always stable with proper frequency compensation.
UCC256301 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.
特性
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)
LLC Resonant Controller in SOIC16
with High Voltage Clearance
Create a Custom Design Using the UCC256301 With the WEBENCH® Power Designer
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