IR3721 Datasheet (International Rectifier)

IR3721, Power Monitor

The IR3721 is a versatile power or current monitor IC for low-voltage DC-DC converters.

The IR3721 monitors the inductor current in buck or multiphase converters using either a current sensing resistor or the inductor’s winding resistance (DCR).

The output (DI) is a pulse code modulated signal whose

IR3721 Features

* Accurate TruePowerTM monitor

* 2.5% static accuracy

* Minimizes dynamic errors

* Minimizes power dissipation

* 5mV - 150mV full scale current range

* Versatile

* Monitors power or current

* Single buck or multiphase converters