UCG28828 Datasheet | Texas Instruments

Features - Integrated 750V Ga N with 170mΩ Rds(on) option - Dynamic QR/DCM/CCM modes of operation - High power density: up to 500k Hz switching frequency - Enable low Bo M cost by integration - Remove auxiliary winding with self bias - Integrated input and output voltage sensing - Integrated current sense - Integrated HV start-up - Integrated X-cap discharge - High efficiency and low EMI performance - Ultra-low standby power: <30m W - Frequency foldback and burst mode - Valley locking - Frequency dithering - Switching slew rate control - prehensive protection features - Overtemperature protection - Overvoltage protection - Short-circuit protection - Cycle-by-cycle current limit - Two-level over power protection with LPS - Brownin and brownout protection - Open feedback protection - Flexible configurability through external resistors - X-cap discharge and CCM mode disable - Selectable switching slew rate - Multiple clamping frequency settings - Fault latch or auto-restart - Maximum and minimum peak current ratio - Dithering amplitude 2 Applications - USB-PD adapter for portable electronics - USB wall outlets and docking stations - Industrial DIN rail power supplies - Server aux power supplies 3 Description UCG2882x is a high frequency, quasi-resonant flyback converter with a built-in 750V Ga N high electron mobility transistor (HEMT) with as low as 170mΩ Rds(on) for AC to DC power conversion. The UCG2882x is designed for high power density applications, such as cell phone fast chargers and notebook adapters. The key feature of this device is the self-bias and auxless sensing scheme which eliminates the need of the auxiliary winding and simplifies the system design with higher efficiency. The UCG2882x also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across wide power range and <30m W standby power consumption. In addition, UCG2882x includes a full list of protections, such as brownin and brownout protection, SCP, OVP, OPP, LPS, OFB and...