IR3621MTR

The IR3621MTR from Infineon is a versatile dual synchronous buck PWM controller and driver IC. It provides a cost-effective, high-performance solution for applications requiring either two independent output voltages or a single output for high current applications through current sharing.

The controller operates in a 2-Phase mode with 180-degree out-of-phase operation, which helps reduce input and output capacitance. Key features include independently programmable soft-start functions for system-level sequencing, pre-bias protection to prevent output discharge during startup, and programmable switching frequencies up to 500KHz per phase for operational flexibility. It also supports external frequency synchronization for simplified filter design.

Protection features are integrated, such as selectable hiccup or latched current limit using MOSFET's Rds(on) sensing, and under-voltage lockout, ensuring system security during fault conditions. The IR3621MTR is suitable for applications like embedded networking and telecom systems, distributed point-of-load power architectures, 2-Phase power supplies, graphics cards, and DDR memory applications.

Available in M and F package types, the IR3621MTR supports tape and reel packaging for automated assembly.