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UCC28070DW - Texas Instruments

Description: Interleaving Continuous Conduction Mode PFC Controller

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UCC28070DW - Texas Instruments - PCB symbol
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PCB Footprints
UCC28070DW - Texas Instruments PCB footprint - Small Outline Packages - Small Outline Packages - DW
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3D Models
UCC28070DW - Texas Instruments - 3D model - Small Outline Packages - DW
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UCC28070DW Details

  • Manufacturer Part Number:

    UCC28070DW

  • Brand Name:

    Texas Instruments

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Active

  • Part Package Code:

    SOIC

  • Pin Count:

    20

  • Country Of Origin:

    Malaysia

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.90

  • Manufacturer:

    Texas Instruments

  • YTEOL:

    15

  • Analog IC - Other Type:

    POWER FACTOR CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    21 V

  • Input Voltage-Min:

    10.5 V

  • Input Voltage-Nom:

    12 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e4

  • Length:

    12.8 mm

  • Moisture Sensitivity Level:

    1

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    85 °C

  • Operating Temperature-Min:

    -40 °C

  • Output Current-Max:

    0.75 A

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SOP

  • Package Equivalence Code:

    SOP20,.4

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE

  • Peak Reflow Temperature (Cel):

    260

  • Qualification Status:

    Not Qualified

  • Seated Height-Max:

    2.65 mm

  • Supply Current-Max (Isup):

    20 mA

  • Supply Voltage-Max (Vsup):

    21 V

  • Supply Voltage-Nom (Vsup):

    12 V

  • Surface Mount:

    YES

  • Switcher Configuration:

    BOOST

  • Switching Frequency-Max:

    300 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Nickel/Palladium/Gold (Ni/Pd/Au)

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    1.27 mm

  • Terminal Position:

    DUAL

  • Time@Peak Reflow Temperature-Max (s):

    30

  • Width:

    7.5 mm

UCC28070DW Frequently Asked Questions (FAQs)

  • A good PCB layout for the UCC28070DW involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes, using a solid ground plane, and minimizing loop areas. TI provides a recommended layout in the datasheet and application notes.
  • The inductor value depends on the input voltage, output voltage, and desired switching frequency. A good starting point is to use the inductor selection guide in the datasheet or TI's Power Stage Designer tool. You can also use the following formula: L = (VIN - VOUT) / (ΔI * f_sw * VOUT), where ΔI is the desired inductor ripple current.
  • The maximum junction temperature (Tj) for the UCC28070DW is 150°C. It's essential to ensure that the device operates within this temperature range to prevent damage and ensure reliability.
  • The UCC28070DW has a built-in OCP feature. You can set the OCP threshold by connecting a resistor (R_OCP) between the OCP pin and GND. The OCP threshold voltage is 0.5V, and the resistor value can be calculated using the formula: R_OCP = 0.5V / (I_OCP * 0.01), where I_OCP is the desired overcurrent threshold.
  • Yes, the UCC28070DW can be used in a synchronous rectification topology. However, you'll need to add an external FET driver and ensure that the FETs are properly synchronized with the UCC28070DW's switching frequency. TI provides application notes and reference designs for synchronous rectification topologies.

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UCC28070DW Overview

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About Texas Instruments

Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.

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UCC28070DW Alternates

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Part Image UCC28070DWR Texas Instruments

Power Factor Controller, Current-mode, 0.75A, 300kHz Switching Freq-Max, BICMOS, PDSO20