UCC2810是TI公司的一款PWM与谐振控制器产品,UCC2810是双路通道同步电流模式 PWM,本页介绍了UCC2810的产品说明、应用、特性等,并给出了与UCC2810相关的TI元器件型号供参考。
UCC2810 - 双路通道同步电流模式 PWM - 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 UCC3810 is a high-speed BiCMOS controller integrating two synchronized pulse width modulators for use in off-line and dc-to-dc power supplies. The UCC3810 family provides perfect synchronization between two PWMs by usin g the same oscillator. The oscillators sawtooth waveform can be used for slope compensation if required.
Using a toggle flip-flop to alternate between modulators, the UCC3810 ensures that one PWM does not slave, interfere, or otherwise affect the other PWM. This toggle flip- flop also ensures that each PWM is limited to 50% maximum duty cycle, insuring adequate off-time to reset magnetic elements. This device contains many of the same elements of the UC3842 current mode controller family, combined with the enhancements of the UCC3802. This minimizes power supply parts count. Enhancements include leading edge blanking of the current sense signals, full cycle fault restart, CMOS output drivers, and outputs which remain low even when the supply voltage is removed.
- Single Oscillator Synchronizes Two PWMs
- 150-µA Startup Supply Current
- 2-mA Operating Supply Current
- Operation to 1 MHz
- Internal Soft-Start
- Full-Cycle Fault Restart
- Internal Leading-Edge Blanking of theCurrent Sense Signal
- 1-A Totem Pole Outputs
- 75-ns Typical Response from Current Sense to Output
- 1.5% Tolerance Voltage Reference