Need a way to control your system with your system load? This economy primary side pwm UCC3809PW-1 secondary side PWM controller from Texas Instruments, will get you your results. This secondary side synchronous controller"s single output can produce a current up to 0.8 A. It has a switching frequency of 1000 kHz. In order to ensure parts aren"t damaged by bulk packaging, this product comes in tube packaging to add a little more protection by storing the loose parts in an outer tube. This secondary side synchronous controller has an operating temperature range of 0 °C to 70 °C. This secondary side synchronous controller"s maximum duty cycle is 70(Typ) %.