Product details

Number of outputs 8 Frequency (Max) (kHz) 2000 Number of ADC channels 15 Analog comparators 4 Communications 1 PMBUS, 1 SPI, 1 UART Compensator 3-pole/3-zero DPWM resolution (ps) 250 GPIOs 26, 33 Number of digital power peripheral feedback loops 4 Non-volatile memory 2kB (Data), 32kB (Program) Processor 31.25MHz, 32-bit ARM7 Operating temperature range (C) -40 to 125 Rating Catalog
Number of outputs 8 Frequency (Max) (kHz) 2000 Number of ADC channels 15 Analog comparators 4 Communications 1 PMBUS, 1 SPI, 1 UART Compensator 3-pole/3-zero DPWM resolution (ps) 250 GPIOs 26, 33 Number of digital power peripheral feedback loops 4 Non-volatile memory 2kB (Data), 32kB (Program) Processor 31.25MHz, 32-bit ARM7 Operating temperature range (C) -40 to 125 Rating Catalog
TQFP (PFC) 80 144 mm² 12 x 12 VQFN (RGC) 64 81 mm² 9.0 x 9.0
  • Digital Control of up to Four Voltage Feedback Loops
  • Up to Eight High-Resolution Digital Pulsewidth Modulated (DPWM) Outputs for Supporting a Wide Range of Offline, Isolated and Non-Isolated DC-to-DC Topologies
    • 250-ps DPWM Pulse-Width Resolution
    • 4-ns DPWM Frequency Resolution
    • Adjustable Phase Shift Between DPWM Outputs
    • Adjustable Dead Band Between Each DPWM Pair
    • Active-High or -Low DPWM Polarity
    • Up to 2-MHz DPWM Switching Frequency
  • Dedicated High-Speed Error Analog-to-Digital Converter (EADC) for Each Feedback Loop With Sense Resolution of up to 1 mV
  • On-Chip 10-Bit D and A Converter (DAC) for Setting EADC Reference Voltage
  • Dedicated Hardware Accelerated Digital Compensators or Control Law Accelerators (CLA)
    • Three-Pole, Three-Zero Configurable Compensator
    • Features Non-Linear Digital Control
    • Multiple Programmable Coefficient Registers for Adaptive Digital Compensation
  • Up to 15-Channel, 12-Bit, 200-ksps, Analog-to-Digital Converter (ADC)
  • Multiple Levels of Fault Protection
    • Four High-Speed Analog Comparators
    • External Fault Inputs
    • 12-Bit ADC
  • Configurable for Voltage-Mode, Average-Current-Mode, and Resonant-Mode Control
  • Allows Synchronization of DPWM Waveforms Between Multiple UCD3040, UCD3020 and UCD3028 (UCD30xx) Devices
  • Adjustable DPWM Pulse Width Enables Support for Current Balancing in a Multiphase Application.
  • High-Performance 31.25-MHz, 32-Bit ARM7 Processor
  • 32-KByte Program Flash and 2-KByte Data Flash Memory With Error Correction Code (ECC)
  • 4-KByte Data RAM
  • 4-KByte Boot ROM
  • Communication Peripherals
    • PMBus
    • UART
    • SPI
    • JTAG (Not Available in the UCD3028)
  • Single-Supply Solution: Internal Regulator Controls External Pass Element
  • Internal Temperature Sensor
  • Up to Five Additional Timers
  • Built-In Watchdog, BOD, and POR
  • 80-Pin QFP (PFC), 64-Pin QFN (RGC), 48-Pin QFN (RGZ), and 40-Pin QFN (RHA and RMH) Package Offerings
  • Operating Temperature Range: –40°C to 125°C
  • APPLICATIONS
    • Isolated AC-to-DC and DC-to-DC Power Supplies
    • Power-Factor Correction
    • Non-Isolated DC-to-DC Power Supplies
  • Digital Control of up to Four Voltage Feedback Loops
  • Up to Eight High-Resolution Digital Pulsewidth Modulated (DPWM) Outputs for Supporting a Wide Range of Offline, Isolated and Non-Isolated DC-to-DC Topologies
    • 250-ps DPWM Pulse-Width Resolution
    • 4-ns DPWM Frequency Resolution
    • Adjustable Phase Shift Between DPWM Outputs
    • Adjustable Dead Band Between Each DPWM Pair
    • Active-High or -Low DPWM Polarity
    • Up to 2-MHz DPWM Switching Frequency
  • Dedicated High-Speed Error Analog-to-Digital Converter (EADC) for Each Feedback Loop With Sense Resolution of up to 1 mV
  • On-Chip 10-Bit D and A Converter (DAC) for Setting EADC Reference Voltage
  • Dedicated Hardware Accelerated Digital Compensators or Control Law Accelerators (CLA)
    • Three-Pole, Three-Zero Configurable Compensator
    • Features Non-Linear Digital Control
    • Multiple Programmable Coefficient Registers for Adaptive Digital Compensation
  • Up to 15-Channel, 12-Bit, 200-ksps, Analog-to-Digital Converter (ADC)
  • Multiple Levels of Fault Protection
    • Four High-Speed Analog Comparators
    • External Fault Inputs
    • 12-Bit ADC
  • Configurable for Voltage-Mode, Average-Current-Mode, and Resonant-Mode Control
  • Allows Synchronization of DPWM Waveforms Between Multiple UCD3040, UCD3020 and UCD3028 (UCD30xx) Devices
  • Adjustable DPWM Pulse Width Enables Support for Current Balancing in a Multiphase Application.
  • High-Performance 31.25-MHz, 32-Bit ARM7 Processor
  • 32-KByte Program Flash and 2-KByte Data Flash Memory With Error Correction Code (ECC)
  • 4-KByte Data RAM
  • 4-KByte Boot ROM
  • Communication Peripherals
    • PMBus
    • UART
    • SPI
    • JTAG (Not Available in the UCD3028)
  • Single-Supply Solution: Internal Regulator Controls External Pass Element
  • Internal Temperature Sensor
  • Up to Five Additional Timers
  • Built-In Watchdog, BOD, and POR
  • 80-Pin QFP (PFC), 64-Pin QFN (RGC), 48-Pin QFN (RGZ), and 40-Pin QFN (RHA and RMH) Package Offerings
  • Operating Temperature Range: –40°C to 125°C
  • APPLICATIONS
    • Isolated AC-to-DC and DC-to-DC Power Supplies
    • Power-Factor Correction
    • Non-Isolated DC-to-DC Power Supplies
  • The UCD30xx devices are members of a family of digital PWM controllers from Texas Instruments providing a single-chip control solution for digital power-conversion applications. These devices allow digital control implementation of a high-performance, high-frequency power supply with flexible configuration of parameters, supervisory, monitoring, and communication functions.

    The UCD30xx are fully programmable solutions that are configurable to support a wide range of isolated and non-isolated topologies in single- or multiphase configurations. Some examples include interleaved PFC, isolated forward, half-bridge, phase-shifted full bridge, active clamp, and resonant LLC.

    At the core of the UCD30xx controllers are the digital control-loop peripherals, also known as Fusion Digital Power peripherals (FDPP). Each FDPP implements a high-speed digital control loop consisting of a dedicated error analog-to-digital converter (EADC), a three-pole/three-zero (3p, 3z) digital compensator, and two DPWM outputs with 250-ps pulse-width resolution. The device also contains a 12-bit, 200-ksps general-purpose ADC with up to 15 channels, timers, interrupt controls, and communications ports such as PMBus, SCI, and SPI. The device is based on a 32-bit ARM7 RISC CPU that performs real-time monitoring, configures peripherals, and manages communications. The CPU executes its program out of programmable flash memory as well as ROM.

    The UCD30xx is supported by Texas Instruments' Code Composer Studio software development environment.

    The UCD30xx devices are members of a family of digital PWM controllers from Texas Instruments providing a single-chip control solution for digital power-conversion applications. These devices allow digital control implementation of a high-performance, high-frequency power supply with flexible configuration of parameters, supervisory, monitoring, and communication functions.

    The UCD30xx are fully programmable solutions that are configurable to support a wide range of isolated and non-isolated topologies in single- or multiphase configurations. Some examples include interleaved PFC, isolated forward, half-bridge, phase-shifted full bridge, active clamp, and resonant LLC.

    At the core of the UCD30xx controllers are the digital control-loop peripherals, also known as Fusion Digital Power peripherals (FDPP). Each FDPP implements a high-speed digital control loop consisting of a dedicated error analog-to-digital converter (EADC), a three-pole/three-zero (3p, 3z) digital compensator, and two DPWM outputs with 250-ps pulse-width resolution. The device also contains a 12-bit, 200-ksps general-purpose ADC with up to 15 channels, timers, interrupt controls, and communications ports such as PMBus, SCI, and SPI. The device is based on a 32-bit ARM7 RISC CPU that performs real-time monitoring, configures peripherals, and manages communications. The CPU executes its program out of programmable flash memory as well as ROM.

    The UCD30xx is supported by Texas Instruments' Code Composer Studio software development environment.

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    Technical documentation

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    View all 4
    Type Title Date
    * Data sheet Digital Power Controllers. datasheet (Rev. H) 23 Aug 2013
    Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
    Application note Using FlashRunnerTM FR03TXI0 for Standalone Programming 30 Aug 2012
    Application note PFC THD Reduction and Efficiency Improvement by ZVS or Valley Switching 26 Apr 2012

    Design & development

    For additional terms or required resources, click any title below to view the detail page where available.

    Debug probe

    TMDSEMU200-U — XDS200 USB Debug Probe

    The XDS200 is a debug probe (emulator) used for debugging TI embedded devices.  The XDS200 features a balance of low cost with good performance as compared to the low cost XDS110 and the high performance XDS560v2.  It supports a wide variety of standards (IEEE1149.1, IEEE1149.7, SWD) in a (...)

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    Application software & framework

    FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

    Fusion Digital Power™ graphical user interface (GUI) software is used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
    Application software & framework

    FUSION_MFR_GUI — Fusion Digital Power Manufacturing Tool

    The Fusion Digital Power Manufacturing Tool (aka MFR GUI) is a Graphical User Interface used to download firmware, upgrade firmware, configure, calibrate and test .

    The MFR GUI supports the same devices as Fusion Digital Power Designer software.  This tool is typically used in manufacturing (...)

    Software programming tool

    UCD3PROG-FR03TXI0 — FlashRunner™ FR03 In-System Programmer

    FlashRunnerTM FR03 is a high-performance, standalone In-System Programmer for Flash-based microcontrollers and serial memories. FlashRunnerTM FR03, which is targeted at production environments, easily interfaces to a programming system or Automatic Test Equipment (ATE) and can work either in full (...)
    From: SMH Technologies
    Support software

    Fusion Digital Power Studio 3.0.77 (Rev. M)

    SLDC011M.ZIP (12814 KB)
    Support software

    Fusion Digital Power Production Tool (Rev. H)

    SLDC014H.ZIP (9901 KB)
    Simulation tool

    PSPICE-FOR-TI — PSpice® for TI design and simulation tool

    PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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    Ordering & quality

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    • Ongoing reliability monitoring

    Support & training

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