Texas Instruments UCC28056
6-Pin Single-Phase Transition-Mode PFC Controller
FEATURES
●1 Ultra-low no-load input power enables < 80-mW standby power at 230 VAC in PFC+LLC system● Excellent light load efficiency and high efficiency over wide range of load due to multi-mode TM and DCM control
● Enables low system cost through FET Drain valley synchronized turn-on which eliminates need for second winding on the boost inductor
● Enables compliance to green power standards without disabling PFC – EuP Lot 6 Tier 2, CoC Ver. 5 Tier 2, Energy Star Ver. 6.1, DoE Level VI
● Burst mode with soft-entry and soft-exit periods enables ultra-low audible noise output
● Enhanced Error Amplifier, responds rapidly to load steps without degrading input current distortion
● User adjustable valley delay ensures valley switching
● Low start-up current consumption (<46 µA)
● Wide VCC range 8.5 V to 34 V
● Cycle-by-cycle current limit
● Second independent output over-voltage protection
● Integrated over-temperature protection
● Create a custom design using the UCC28056 device with the...