UCG28836 is a high frequency, quasi-resonant flyback converter with a built-in 750V GaN high electron mobility transistor (HEMT) with low Rds(on) for AC to DC power conversion. The UCG28836 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 UCG28836 also features intelligent mode transition (CCM/QR/DCM) to enable high efficiency across wide power range and <30mW standby power consumption. In addition, UCG28836 includes a full list of protections such as brownin and brownout protection, SCP, OVP, OPP, LPS, OFB and OTP. The cycle-by-cycle current limit allows for fast response to the fault conditions to safeguard the system and improve the reliability. In a small 5mm × 5mm package, the UCG28836 has dedicated configuration pins to offer more flexibility. Only resistors are needed to tune certain parameters for each system, enabling a platform design with a single device.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | UCG2883x Self-Biased High Frequency QR Flyback Converter With Integrated GaN datasheet | 06 Mar 2026 |
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (REZ) | 12 | Ultra Librarian |
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