UCC1895是TI公司的一款PWM与谐振控制器产品，UCC1895是BiCMOS 高级相移谐振控制器，本页介绍了UCC1895的产品说明、应用、特性等，并给出了与UCC1895相关的TI元器件型号供参考。
UCC1895 - BiCMOS 高级相移谐振控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - TI公司（Texas Instruments，德州仪器）
The UCC3895 is a phase-shift PWM controller that implements control of a full-bridge power stage by phase shifting the switching of one half-bridge with respect to the other. The device allows constant frequency pulse-width modulation in conjunction with resonant zero-voltage switching to provide high efficiency at high frequencies. The part is used either as a voltage-mode or current-mode controller.
While the UCC3895 maintains the functionality of the UC3875/6/7/8 family and UC3879, it improves on that controller family with additional features such as enhanced control logic, adaptive delay set, and shutdown capability. Because the device is built using the BCDMOS process, it operates with dramatically less supply current than it’s bipolar counterparts. The UCC3895 operates with a maximum clock frequency of 1 MHz.
- Programmable-Output Turnon Delay
- Adaptive Delay Set
- Bidirectional Oscillator Synchronization
- Voltage-Mode, Peak Current-Mode, or Average Current-Mode Control
- Programmable Softstart, Softstop and Chip Disable via a Single Pin
- 0% to 100% Duty-Cycle Control
- 7-MHz Error Amplifier
- Operation to 1 MHz
- Typical 5-mA Operating Current at 500 kHz
- Very Low 150-µA Current During UVLO
