GaN/Gallium Nitride - MTC-PD65W1C-CTA1

This power module is a 65W single USB-C interface. Its output voltage can be controlled by the protocol IC to provide outputs such as 5V/3A, 9V/3A, 15V/3A, and 20V/3.25A. It uses a QR/DCM flyback circuit architecture, achieving up to 93% efficiency at 20V heavy load and a power density of up to 1.5W/cm³. The system employs a same-series control single-chip: a QR primary-side control IC driving the MTC D-mode GaN FET (MGZ31N65-650V), a secondary-side synchronous rectification control IC, and a PD3.0 protocol IC, which can achieverelativelyBest match.

This report includes the 65W1C electrical specifications, schematic, BOM, main transformer design parameters, and PCB layout,relativelyFollowed by efficiency measurement and EMI test results.

I.GaN/Gallium Nitride -Features of MTC-PD65W1C-CTA1:

Flyback valley detection reduces switching losses
Light-load Burst Mode increases efficiency
relativelyBest efficiency up to 93%
No-load power consumption below 50mW
Control IC supports frequencies up to 160 kHz
System frequency has jitter to reduce EMI interference
Control IC can directly drive GaN
Advanced protection features are as follows:
(1) VDD overvoltage and undervoltage protection
(2) At startup,relativelylarge peak current protection
(3) Output overvoltage protection
(4) Output short-circuit protection
Can output 65W power

II.GaN/Gallium Nitride -Applications of MTC-PD65W1C-CTA1:

LED lighting driver

Power strip with charging interface