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UCD9246 Datasheet PDF - Texas Instruments

Part NameDescriptionManufacturer
UCD9246 Digital PWM System Controller TI
Texas Instruments TI
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UCD9246 Datasheet PDF :   UCD9246 pdf   
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The UCD9246 is a multi-rail, multi-phase synchronous buck digital PWM controller designed for non-isolated DC/DC power applications. This device integrates dedicated circuitry for DC/DC loop management with flash memory and a serial interface to support configurability, monitoring and management.
The UCD9246 was designed to provide a wide variety of desirable features for non-isolated DC/DC converter applications while minimizing the total system component count by reducing external circuits. The solution integrates multi-loop management with sequencing, margining, tracking and intelligent phase management to optimize for total system efficiency. Additionally, loop compensation and calibration are supported without the need to add external components.

• Fully Configurable Multi-Output and Multi-Phase 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

• Industrial/ATE
• Networking Equipment
• Telecommunications Equipment
• Servers
• Storage Systems
• FPGA, DSP and Memory Power


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