This switch mode secondary side post regulator pwm UCC2583D secondary side PWM controller from Texas Instruments incorporates soft-start capabilities with a configurable ramp time. This secondary side synchronous controller has single output. You can operate this at a switching frequency of 500(Min) 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"s maximum duty cycle is 100(Min) %. This secondary side synchronous controller has an operating temperature range of -40 °C to 85 °C.