IFXICE3AR4780JG
Overview
The ICE3AR4780JG is an integrated offline flyback controller with an 800V CoolMOS power transistor and a dedicated startup cell. It operates at a fixed switching frequency of 100kHz and is designed for isolated power supplies up to 29W. The device integrates advanced features such as active burst mode for low standby power and frequency jittering to reduce EMI.
Why Choose This Part
This controller features an 800V avalanche-rugged CoolMOS which eliminates the need for external high-voltage MOSFETs, simplifying PCB layout. It includes a built-in brownout feature and adjustable blanking windows to handle high load jumps without false triggering protections. The integrated frequency jittering and soft driving techniques significantly lower the EMI signature, reducing the size and cost of the required EMI filter.
Applications
Key Specifications
Getting Started
Designers should begin by calculating the transformer turns ratio and primary inductance for the 100kHz target frequency. Utilize Infineon's CoolSET design tools to verify the thermal performance of the PG-DSO-12 package and the selectable burst mode levels. Ensure the brownout resistor divider is calculated correctly to match the intended AC input operating range.
