IR Introduces PWM Control IC for Energy-Efficient High Performance DC-DC Applications

When paired with IR’s DirectFET MOSFETs this feature-rich controller delivers a highly 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 easily solve their current needs in the 12 to 30A range, as the IC employs the same control engine, monitoring and reporting as the newly established 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 optimize 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 +/-1% over temperature, line and load variations.

The new device integrates a range of features including programmable soft start, pre-bias start up, voltage tracking, external synchronization, 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.