2-PHASE / DUAL SYNCHRONOUS PWM CONTROLLER WITH OSCILLATOR SYNCHRONIZATION AND PRE-BIAS STARTUP

The IR3621 IC combines a dual synchronous buck controller and drivers, providing a cost-effective, high performance and flexible solution. The IR3621 operates in 2-Phase mode to produce either 2-independent output voltages or current share single output for high current application. The 180! out-of-phase operation allows the reduction of input and output capacitance. Other key features include two independently programmable soft-start functions to allow system level sequencing of output voltages in various configurations. The pre-bias protection feature prevents the discharge of the output voltage and possible damage to the load during start-up when a preexisting voltage is present at the output. Programmable switching frequency up to 500KHz per phase allows flexibility to tune the operation of the IC to meet system level requirements, and synchronization allows the simplification of system level Filter design. Protection features such as selectable hiccup or latched current limit, and under voltage lock-out are provided to give required system level security in the event of a fault condition.
By International Rectifier Corp.
IR3621 's PackagesIR3621 's pdf datasheet
IR3621M
IR3621MPBF
IR3621MTR
IR3621MTRPBF




IR3621 Pinout, Pinouts
IR3621 pinout,Pin out
This is one package pinout of IR3621,If you need more pinouts please download IR3621's pdf datasheet.

IR3621 Application circuits
IR3621 circuits
This is one application circuit of IR3621,If you need more circuits,please download IR3621's pdf datasheet.


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