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UCD9240PFCTIN/a1avaiDigital Point of Load System Controller 80-TQFP -40 to 125
UCD9240PFCG4TIN/a1avaiDigital Point of Load System Controller 80-TQFP -40 to 125
UCD9240PFCRTIN/a727avaiDigital Point of Load System Controller 80-TQFP -40 to 125
UCD9240RGCRTIN/a78avaiDigital Point of Load System Controller 64-VQFN -40 to 125
UCD9240RGCTTIN/a62avaiDigital Point of Load System Controller 64-VQFN -40 to 125


UCD9240PFCR ,Digital Point of Load System Controller 80-TQFP -40 to 125maximum ratings may cause permanent damage to the device. These are stress ratingsonly and function ..
UCD9240RGCR ,Digital Point of Load System Controller 64-VQFN -40 to 125FEATURES • Supported by Fusion Digital Power™Designer, a Full Featured PC Based Design2• Fully Conf ..
UCD9240RGCT ,Digital Point of Load System Controller 64-VQFN -40 to 125These devices have limited built-in ESD protection. The leads should be shorted together or the dev ..
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UCD9240PFC-UCD9240PFCG4-UCD9240PFCR-UCD9240RGCR-UCD9240RGCT
Digital Point of Load System Controller 80-TQFP -40 to 125
1FEATURES
APPLICATIONS
DESCRIPTION
UCD9240
www.ti.com...................................................................................................................................................
SLUS766C–JULY 2008–REVISED NOVEMBER 2008
Digital PWM System Controller
Supportedby Fusion Digital Power™
Designer,a Full Featured PC Based Design Fully Configurable Multi-Output and
Toolto Simulate, Configure, and MonitorMulti-Phase Non-Isolated DC/DC PWM
Power Supply Performance.Controller
Controls Up To Four Voltage Rails and Up To
Eight Phases
Industrial/ATE Supports Switching Frequencies Upto 2MHz Networking EquipmentWith 250 ps Duty-Cycle Resolution Telecommunications Equipment Up To 1mV Closed Loop Resolution Servers Hardware-Accelerated, 3-Pole/3-Zero Storage SystemsCompensator With Non-Linear Gain for FPGA, DSP and Memory PowerImproved Transient Performance Supports Multiple Soft-Start and Soft-Stop
Configurations Including Prebias Start-up

The UCD9240 is a multi-rail, multi-phase• Supports Voltage Tracking, Margining and synchronous buck digital PWM controller designedforSequencing non-isolated DC/DC power applications. This device• Supports Current and Temperature Balancing integrates dedicated circuitry for DC/DC loopfor Multi-Phase Power Stages management with flash memory anda serial interface support configurability, monitoring and• Supports Phase Adding/Shedding for
management.Multi-Phase Power Stages SyncIn /Out Pins Align DPWM Clocks The UCD9240 was designed to providea wide
varietyof desirable features for non-isolated DC/DCBetween Multiple UCD9240 Devices
converter applications while minimizing the total• Fan Monitoring and Control system component count by reducing external• 12-Bit Digital Monitoringof Power Supply circuits. The solution integrates multi-loopParameters Including: management with sequencing, margining, tracking
and intelligent phase management to optimize for– Input Current and Voltage
total system efficiency. Additionally, loop– Output Current and Voltage compensation and calibration are supported without– Temperatureat Each Power Stage the needto add external components. Multiple Levelsof Overcurrent Fault To facilitate configuring the device, the TexasProtection: Instruments Fusion Digital Power™ Designer is– External Current Fault Inputs provided. This PC based Graphical User Interface
offers an intuitive interfaceto the device. This tool– Analog Comparators Monitor Current allows the design engineerto configure the systemSense Voltage operating parameters for the application, store the– Current Continually Digitally Monitored configuration to on-chip non-volatile memory and• Over and Undervoltage Fault Protection observe both frequency domain and time domain
simulationsfor eachof the power stage outputs.• Overtemperature Fault Protection Enhanced Nonvolatile Memory With Error TI has also developed multiple complementary power
stage solutions– from discrete drivesin the UCD7kCorrection Code (ECC)
familyto fully tested power train modulesin the PTD• Device Operates Froma Single Supply Withan family. These solutions have been developed toInternal Regulator Controller That Allows complement the UCD9k family of system powerOperation Overa Wide Supply Voltage Range
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