UCD9220

UCD9220 www.ti.com SLUS904 – MARCH 2009 Digital PWM System Controller Check for Samples: UCD9220 FEATURES 1 2 Fully Configurable Multi-Output and MultiPhase Non-Isolated DC/DC PWM Controller Controls Up To Two Voltage Rails and Up To Four 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 MultiPhase Power Stages Sync In /Out Pins Align DPWM Clocks Between Multiple UCD9220 Devices 12-Bit Digital Monitoring of Power Supply Parameters Including: – Input Current and Voltage – Output Current and Voltage – Temperature at Each Power Stage Multiple Levels of Overcurrent Fault Protection: – External Current Fault Inputs – Analog Comparators Monitor Current Sense Voltage – Current Digitally Monitored Over and Undervoltage Fault Protection Overtemperature 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 S...