• Product Introduction

UCC2817A 

BiCMOS power factor pre-regulator illustrate   The UCC3817A and UCC3818A home provide all the features necessary, including an active power factor correction preconditioner. The controller realizes that by shaping the AC input current waveform, the corresponding AC input line voltage and power factor are close. The average current mode control maintains a stable, low-distortion sinusoidal current. Designed in Texas Instruments' BiCMOS process, UCC3817A/UCC3818A offers features such as low start-up current, reduced power consumption, overvoltage protection, undervoltage lock-out detection shunt circuitry, leading modulation technology to reduce high-capacity capacitance with new features of ripple current through an improved, low-offset (± 2 mV) current amplifier to reduce distortion under light load conditions.   characteristic   Controls the boost pre-regulator to the near power factor Distortion of boundaries World Wide Network cable operation Overvoltage protection Precise power limits Average current mode control Improve anti-interference Improved feedforward line adjustment Frontier modulation Typical start-up current of 150μA Low-power BiCMOS operation 12 V to 17 V operation The frequency range of 6 kHz is 220 kHz