USB-PD Converter Uses GaN to Deliver Space-Saving Power
The VIPerGaN65D flyback converter, with its SOIC16 outline, serves up to 65 W of power to extremely small and economical power supplies, adapters, and USB-PD (Power Delivery) fast chargers. Input voltages range from 85 to 265 V, or up to 85 W across a narrower input range. Developed by STMicroelectronics, the quasi-resonant offline converter integrates a 700-V gallium-nitride (GaN) transistor and an optimized gate driver that can operate at up to 240 kHz with minimal switching losses.
The converter’s smart gate driver supports zero-voltage switching and adjusts the valley-synchronization delay to ensure the GaN transistor always turns on at the valley of the drain resonance. It also supports dynamic blanking time to help maintain efficiency with increasing input voltage, as well as feed-forward compensation to minimize the input peak power variation.
The converter meets the requirements of all the latest international energy-efficiency standards with a standby power of less than 30 mW.
The VIPerGaN65D was engineered specifically for space-limited applications, with a high operating frequency that enables the use of a small flyback transformer, small passive components, and a compact, low-cost circuit board. In addition, it’s housed in a SOIC16 narrow-body package.
The VIPerGaN65D is available now, from $1.16 each for orders of 1,000 pieces. For additional information, click here.
