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ISL78223AAZ - Renesas Electronics

Description: The ISL78223 is a high performance Zero Voltage Switching (ZVS) full-bridge PWM controller. It achieves ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETs are trailing-edge modulated with adjustable resonant switching delays. Adding to the ISL78223’s feature set are average current monitoring and soft-start. The average current signal can be used for average current limiting, current sharing circuits, and average current mode control. Additionally, the ISL78

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ISL78223AAZ - Renesas Electronics PCB footprint - Small Outline Packages - Small Outline Packages - M20.15
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ISL78223AAZ - Renesas Electronics  - 3D model - Small Outline Packages - M20.15
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ISL78223AAZ Details

  • Manufacturer Part Number:

    ISL78223AAZ

  • Brand Name:

    Renesas

  • Pbfree Code:

    Yes

  • Rohs Code:

    Yes

  • Part Life Cycle Code:

    Obsolete

  • Part Package Code:

    QSOP

  • Package Description:

    QSOP-20

  • Pin Count:

    20

  • Manufacturer Package Code:

    M20.15

  • ECCN Code:

    EAR99

  • HTS Code:

    8542.39.00.60

  • Factory Lead Time:

    24 Weeks

  • Manufacturer:

    Renesas Electronics Corporation

  • YTEOL:

    0

  • Additional Feature:

    IT ALSO HAS VOLTAGE MODE OF CONTROL

  • Analog IC - Other Type:

    SWITCHING CONTROLLER

  • Control Mode:

    CURRENT-MODE

  • Control Technique:

    PULSE WIDTH MODULATION

  • Input Voltage-Max:

    20 V

  • Input Voltage-Min:

    9 V

  • Input Voltage-Nom:

    10 V

  • JESD-30 Code:

    R-PDSO-G20

  • JESD-609 Code:

    e3

  • Length:

    8.65 mm

  • Moisture Sensitivity Level:

    3

  • Number of Functions:

    1

  • Number of Terminals:

    20

  • Operating Temperature-Max:

    105 °C

  • Operating Temperature-Min:

    -40 °C

  • Package Body Material:

    PLASTIC/EPOXY

  • Package Code:

    SSOP

  • Package Equivalence Code:

    SSOP20,.25

  • Package Shape:

    RECTANGULAR

  • Package Style:

    SMALL OUTLINE, SHRINK PITCH

  • Peak Reflow Temperature (Cel):

    260

  • Seated Height-Max:

    1.75 mm

  • Surface Mount:

    YES

  • Switching Frequency-Max:

    2000 kHz

  • Technology:

    BICMOS

  • Temperature Grade:

    INDUSTRIAL

  • Terminal Finish:

    Matte Tin (Sn) - annealed

  • Terminal Form:

    GULL WING

  • Terminal Pitch:

    0.635 mm

  • Terminal Position:

    DUAL

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

    30

  • Width:

    3.895 mm

ISL78223AAZ Frequently Asked Questions (FAQs)

  • Renesas provides a recommended PCB layout in the ISL78223AAZ evaluation board user manual, which includes guidelines for thermal vias, copper pours, and component placement to minimize thermal resistance and ensure reliable operation.
  • To ensure reliable start-up and shutdown, it is recommended to follow the power-up and power-down sequencing guidelines in the datasheet, and to use a soft-start circuit to limit the inrush current during start-up.
  • The maximum allowed voltage on the EN pin is 6V, as specified in the datasheet. Exceeding this voltage may damage the device.
  • The ISL78223AAZ is rated for operation up to 125°C, but it is recommended to derate the output current and voltage according to the thermal derating curves in the datasheet to ensure reliable operation in high-temperature environments.
  • To troubleshoot oscillations or instability in the output voltage, check the PCB layout for noise coupling, ensure that the input and output capacitors meet the recommended specifications, and verify that the feedback loop is properly compensated according to the datasheet guidelines.

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ISL78223AAZ Overview

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