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Product details

Parameters

Supply voltage (Min) (V) 2.2 Supply voltage (Max) (V) 18 Number of outputs 1 Peak output current (A) 6 Input threshold CMOS Prop delay (ns) 20 Driver configuration Single Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Digital power control drivers & powertrain modules

Package | Pins | Size

VQFN-HR (RGM) 13 9 mm² 3 x 3 open-in-new Find other Digital power control drivers & powertrain modules

Features

  • Fully Integrated Power Switches With Drivers for Single and Multiphase Synchronous Buck Converters
  • Full Compatibility With TI Fusion Digital Power Supply Controllers, (UCD91xx and UCD92xx Families)
  • Compatible With Analog Domain Controllers
  • Wide Input Voltage Range:
    • 4.5 V to 14 V
    • Operational Down to 2.2-V Input With an External Bias Supply
  • Up to 6-A Output Current
  • Operational to 2-MHz Switching Frequency
  • Current Limit With Current Limit Flag
  • Onboard Regulated 6-V Driver Supply From VIN
  • Thermal Protection and Monitoring
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Description

The UCD74106 is a complete power system ready to drive a buck power supply (). High-side MOSFETs, low-side MOSFETs, drivers, current sensing circuitry and necessary protection functions are all integrated into one monolithic solution to facilitate minimum size and maximum efficiency. Driver circuits provide high charge and discharge current for the high-side NMOS switch and the low-side NMOS synchronous rectifier in a synchronous buck circuit. The MOSFET gates are driven to 6.25 V by an internally regulated VGG supply. The internal VGG regulator can be disabled to permit the user to supply an independent gate drive voltage. This flexibility allows a wide power conversion input voltage range of 2.2 V to 18 V. Internal Under Voltage Lockout (UVLO) logic insures VGG is good before allowing chip operation.

A drive logic block allows operation in one of two modes. In synchronous mode, the logic block uses the PWM signal to control both the high-side and low-side gate drive signals. Dead time is optimized to prevent cross conduction. The synchronous rectifier enable (SRE) pin controls whether or not the low-side FET is turned on when the PWM signal is low.

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Technical documentation

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Type Title Date
* Datasheet Synchronous-Buck Power Stage datasheet (Rev. A) Dec. 19, 2012
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018

Design & development

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

Software development

APPLICATION SOFTWARE & FRAMEWORK Download
Digital Power Software
FUSION_DIGITAL_POWER_DESIGNER Fusion Digital Power™  is the Graphical User Interface (GUI) 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.
Features

Some of the tasks you can perform with the GUI include:

  • Turn on or off the power supply output, either through the hardware control line or the PMBus OPERATION command
  • Monitor real-time data. Items such as input voltage, output voltage, output current, temperature, and warnings/faults are continuously (...)
APPLICATION SOFTWARE & FRAMEWORK Download
Fusion Digital Power Manufacturing Tool
FUSION_MFR_GUI 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 (...)

Features

Some of the tasks the tool can perform include:

  • Download/Upgrade firmware
  • Program a device configuration
  • Calibrate a device (manually or instrumented via GPIB):
    • Input voltage (Vin)
    • Output voltage (Vout)
    • Output current (Iout)
    • Temperature
  • Test the device (validate power conversion falls within acceptable Vout (...)

Design tools & simulation

SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)

CAD/CAE symbols

Package Pins Download
VQFN-HR (RGM) 13 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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Support & training

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