UCD9248

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数字 PWM 系统控制器

产品详情

Number of outputs 4 Frequency (max) (MHz) 2 Number of ADC channels 4 Analog comparators 4 Communication interface 1 PMBUS Compensator 3-pole/3-zero DPWM resolution (ps) 250 Number of GPIOs 26 Number of digital-power peripheral feedback loops 4 Nonvolatile memory (Byte) 32k (program) Operating temperature range (°C) -40 to 125 Rating Catalog
Number of outputs 4 Frequency (max) (MHz) 2 Number of ADC channels 4 Analog comparators 4 Communication interface 1 PMBUS Compensator 3-pole/3-zero DPWM resolution (ps) 250 Number of GPIOs 26 Number of digital-power peripheral feedback loops 4 Nonvolatile memory (Byte) 32k (program) Operating temperature range (°C) -40 to 125 Rating Catalog
TQFP (PFC) 80 196 mm² 14 x 14
  • Fully Configurable Multi-Output and Multi- Phase Non-Isolated DC/DC PWM Controller
  • Controls Up to 4 Voltage Rails and Up to 8 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
    • Analog Comparators Monitor Current Sense Voltage
    • 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
  • Fully Configurable Multi-Output and Multi- Phase Non-Isolated DC/DC PWM Controller
  • Controls Up to 4 Voltage Rails and Up to 8 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
    • Analog Comparators Monitor Current Sense Voltage
    • 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

The UCD9248 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 UCD9248 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.

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.

TI has also developed multiple complementary power stage solutions – from discrete drivers 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.

The UCD9248 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 UCD9248 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.

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.

TI has also developed multiple complementary power stage solutions – from discrete drivers 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.

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类型 标题 下载最新的英语版本 日期
* 数据表 Digital PWM System Controller - UCD9248 数据表 (Rev. A) 2012年 8月 24日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
测试报告 TI Power Reference Design for Xilinx® Kintex®-7 (KC705) (Rev. A) 2014年 12月 16日
模拟设计期刊 系统遥测t技术:内ry容: 、原at因, 与h方y 法 英语版 2014年 6月 6日
应用手册 Digital Loop Exemplified 2011年 9月 23日
用户指南 Using the UCD92xx Digital Point-of-Load Controller 2011年 4月 13日
用户指南 UCD92xx PMBus Command Reference 2008年 11月 3日
应用简报 PowerPAD® 轻松实现 (Rev. B) 2004年 5月 12日

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