UCD9246

www.ti.com Digital PWM System Controller UCD9246 SLVSA34 – JANUARY 2010 FEATURES 1 2 Fully Configurable Multi-Output and MultiPhase Non-Isolated DC/DC PWM Controller Controls Up to 4 Voltage Rails and Up to 6 Phases Supports Switching Frequencies Up to 2MHz with 250 ps Duty-Cycle Resolution Up To 1mV Closed Loop Resolution Hardware-Accelerated, 3-Pole/3-Zero Compensator with Non-Linear Gain for Improved Transient Performance Supports Multiple Soft-Start and Soft-Stop Configurations Including Prebias Start-up Supports Voltage Tracking, Margining and Sequencing Supports Current and Temperature Balancing for Multi-Phase Power Stages Supports Phase Adding/Shedding for Multi-Phase Power Stages Sync In/Out Pins Align DPWM Clocks Between Multiple UCD92xx Devices 12-Bit Digital Monitoring of Power Supply Parameters Including: – Input/Output Current and Voltage – Temperature at Each Power Stage Multiple Levels of Over-current Fault Protection: – External Current Fault Inputs – Fast Overcurrent Protection – Current Continually Digitally Monitored Over- and Under-voltage Fault Protection Over-temperature Fault Protection Enhanced Nonvolatile Memory with Error Correction Code (ECC) Device Operates From a Single Supply with an Internal Regulator Controller That Allows Operation Over a Wide Supply Voltage Range Supported by Fusion Digital Power™ Designer, a Full Featured PC Based Design Tool to Simulate, Configure, and Monitor Power Supply Performance A...