Flyback Controller, Current Control, UCC28/UCC38 Series, Texas InstrumentsThe isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler.The Texas Instruments UCC2801 family of high-speed, low-power integrated circuits contain all of the control and drive components required for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies with minimal parts count.100-μA typical starting supply current500-μA typical operating supply currentOperation up to 1 MHzInternal soft startInternal fault soft startInternal leading-edge blanking of the current sense signal1-A totem-pole output70-ns typical response from current-sense to gate drive output1.5% tolerance voltage referenceSame pinout as UC3842 and UC3842AFlyback Controllers, Texas InstrumentsCurrent-Mode and Voltage-Mode PWM ControllerPrimary-Side RegulationPeak Power ModeLow Power