UCD9240
www.ti.com ................................................................................................................................................... SLUS766C–JULY 2008–REVISED NOVEMBER 2008
Digital PWM System Controller
1
FEATURES
•
Supported by Fusion Digital Power™
Designer, a Full Featured PC Based Design
Tool to Simulate, Configure, and Monitor
Power Supply Performance.
2
•
Fully Configurable Multi-Output and
Multi-Phase Non-Isolated DC/DC PWM
Controller
•
•
Controls Up To Four Voltage Rails and Up To
Eight Phases
APPLICATIONS
•
•
•
•
•
•
Industrial/ATE
Supports Switching Frequencies Up to 2MHz
With 250 ps Duty-Cycle Resolution
Networking Equipment
Telecommunications Equipment
Servers
Storage Systems
FPGA, DSP and Memory Power
•
•
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
DESCRIPTION
The UCD9240 is
a
multi-rail, multi-phase
Supports Voltage Tracking, Margining and
Sequencing
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
Supports Current and Temperature Balancing
for Multi-Phase Power Stages
to
support
configurability,
monitoring
and
Supports Phase Adding/Shedding for
Multi-Phase Power Stages
management.
Sync In /Out Pins Align DPWM Clocks
Between Multiple UCD9240 Devices
The UCD9240 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
•
•
Fan Monitoring and Control
12-Bit Digital Monitoring of Power Supply
Parameters Including:
circuits.
The
solution
integrates
multi-loop
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
Temperature at Each Power Stage
compensation and calibration are supported without
the need to add external components.
•
Multiple Levels of Overcurrent Fault
Protection:
To facilitate configuring the device, the Texas
Instruments Fusion Digital Power™ Designer is
provided. This PC based Graphical User Interface
offers an intuitive interface to the device. This tool
allows the design engineer to configure the system
operating parameters for the application, store the
configuration to on-chip non-volatile memory and
observe both frequency domain and time domain
simulations for each of the power stage outputs.
–
–
External Current Fault Inputs
Analog Comparators Monitor Current
Sense Voltage
–
Current Continually Digitally Monitored
•
•
•
Over and Undervoltage Fault Protection
Overtemperature Fault Protection
Enhanced Nonvolatile Memory With Error
Correction Code (ECC)
TI has also developed multiple complementary power
stage solutions – from discrete drives in the UCD7k
family to fully tested power train modules in the PTD
family. These solutions have been developed to
complement the UCD9k family of system power
controllers.
•
Device Operates From a Single Supply With an
Internal Regulator Controller That Allows
Operation Over a Wide Supply Voltage Range
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
Fusion Digital Power, Auto-ID are trademarks of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated
5秒后页面跳转
纳微科技震撼发布GaNSlim革新氮化镓功率芯片
意法半导体发布第四代SiC技术，助力电动汽车电驱
联发科推出全球首款3纳米汽车芯片CT-X1，挑战高通SA8295
国家大基金减持三家半导体企业，市场反应各异
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
