Silanna Semiconductor SZ1130

Description

This test report of SZ-RD12-65W evaluation board describes a 65 W universal input offline power supply with programmable output voltage (5 V/3.25 A, 9 V/3.25 A, 15V/3.25 A, 20 V/3.25 A). The power supply uses SZ1130 (Flyback PWM controller with integrated active clamp circuit) IC, GaN Systems GS-065-008-1-L (650 V E-mode GaN Transistor), and Weltrend WT6633P USB PD controller. This design shows the high-power density and efficiency that can be achieved due to the high level of integration of the SZ1130 controller.This document contains the power supply specification,schematic, bill-of-materials, transformer documentation,printed circuit layout, and performance data.

Features

• Integrated High Voltage Active Clamp FET,Active Clamp Driver, and Start-up Regulator
• Capable of Over 94% Efficiency
• Flat Efficiency Across Universal (90-265 VAC) Input Voltage and Load
• Tight Switching Frequency Regulation forImproved Input EMI Filter Utilization
• Up to 140 kHz Switching Frequency Operation
• OptiModeTM Cycle-by-Cycle Adaptive Digital Control
• Multi-Mode Operation (Burst Mode, Quasi-Resonant, Valley Mode Switching)
• Advanced Valley Mode Switching for low EMI
• Self-Tuning Valley Detection
• OTP, UVLO, OVLO, PCL, OPP and OSCProtections
• <50mW No Load Power Consumption of the IC
• Up to 65W Output Power

Typical applications

• High-Power-Density USB-PD AC/DC Power Supplies

More information

• Datasheet
• IC product information