International Rectifier has introduced the IR3640M, a single phase synchronous buck PWM controller with integrated MOSFET drivers and bootstrap diode. Its single loop voltage mode architecture simplifies design while delivering precise output voltage regulation and fast transient response. The IR3640M allows designers who use IR’s SupIRBuck integrated voltage regulators for loads lower than 12 A to easily solve their current needs in the 12 to 30 A range, as the IC employs the same control engine, monitoring and reporting. This latest control IC is designed to drive a pair of N-channel MOSFETs from 250 kHz to 1,5 MHz switching frequency. The output voltage can be precisely regulated from as low as 0,7 V within a tolerance of ±1% over temperature, line and load variations.
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