UCD7242

UCD7242 www.ti.com SLUS962B – JANUARY 2010 – REVISED AUGUST 2012 Digital Dual Synchronous-Buck Power Driver Check for Samples: UCD7242 FEATURES 1 Fully Integrated Power Switches With Drivers for Dual Synchronous Buck Converters Full Compatibility With TI Fusion Digital Power Supply Controllers, Such as the UCD92xx Family Wide Input Voltage Range: 4.75 V to 18 V Operational Down to 2.2 V Input With an External Bias Supply Up to 10A Output Current per Channel Operational to 2 MHz Switching Frequency High Side Current Limit With Current Limit Flag Onboard Regulated 6 V Driver Supply From VIN Thermal Protection Temperature Sense Output – Voltage Proportional to Chip Temperature UVLO and OVLO Circuits Ensure Proper Drive Voltage Rated From –40°C to 125°C Junction Temperature RoHS Compliant Accurate On-Die Current Sensing (±5%) APPLICATIONS Digitally-Controlled Synchronous-Buck Power Stages High Current Dual-Phase VRM/EVRD Regulators for Desktop, Server, Telecom and Notebook Processors TMON VIN PWM-B SRE-B FLT-B VGGDIS IMON-B BST-B PWM-A SRE-A FLT-A IMON-A BST-A BSW-B SW-B BSW-A SW-A PGND PGND GND BP3 VGG DESCRIPTION The UCD7242 is a complete power system ready to drive two independent buck power supplies (see Figure 1). High side MOSFETs, low side MOSFETs, drivers, current sensing circuitry and necessary protection functions are all integrated into one monolithic solution to facilitate minimum size and maximum efficiency. Driver circuit...