IR3640M PWM control IC launched by IR

These include servers, storage, Netcom, games consoles and general-purpose DC/DC convertors.

The IR3640M is a single-phase synchronous buck PWM controller with integrated Mosfet drivers and bootstrap diode.

The device's single-loop voltage mode architecture simplifies design while delivering precise output voltage regulation and fast transient response.

When paired with IR's DirectFET Mosfets, this controller delivers a flexible, efficient solution and, because of its wide input and output voltage range, can be used in a variety of high-performance point-of-load applications.

The IR3640M allows designers who use IR's SupIRBuck integrated voltage regulators for loads lower than 12A to solve their current needs in the 12-30A range, as the IC employs the same control engine, monitoring and reporting as the SupIRBuck industry standard.

This latest control IC is designed to drive a pair of N-Channel Mosfets from 250kHz to 1.5MHz switching frequency, providing designers with the flexibility to optimise the solution for best efficiency or smallest footprint.

The output voltage can be precisely regulated from as low as 0.7V within a tolerance of +/- one per cent over temperature, line and load variations.

The device integrates a range of features including programmable soft-start, pre-bias start-up, voltage tracking, external synchronisation, enable input and 'power-good' output.

Fault protection features include thermal shutdown, over-voltage and over-current shutdown and under-voltage lock out.

The device is offered lead-free and is RoHS compliant.