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LM5039MH/NOPB

Texas Instruments

Voltage Mode PWM Controller 2A 20-Pin TSSOP EP Rail

Manufacturer Part #: LM5039MH/NOPB

Alternate Part #: LM5039MH/NOPB


legend RoHS Compliant

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Information

The LM5039 Half-Bridge Controller/Gate Driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B half-bridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating high-side gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown.

Key Features

  • 105V / 2A Half-Bridge Gate Drivers
  • Synchronous Rectifier Control Outputs with Programmable Delays
  • High Voltage (105V) Start-up Regulator
  • Voltage-mode Control with Line Feed-Forward and Volt • Second Limiting
  • Programmable Average Current Limit Balances the Half-Bridge Capacitor Divider Voltage in an Overload Condition
  • Programmable Hiccup Mode Timer Reduces Power Dissipation During a Continuous Overload Event
  • Adjustable Peak Cycle-by-Cycle Over Current Protection
  • Resistor Programmed, 2MHz Capable Oscillator
  • Patented Oscillator Synchronization
  • Programmable Line Under-Voltage Lockout
  • Internal Thermal Shutdown Protection
  • Adjustable Soft-Start
  • Direct Opto-Coupler Interface
  • 5V Reference Output
  • HTSSOP-20 (Thermally enhanced)
  • WQFN-24 (4mm x 5mm)
  • Technical Attributes

    Description
    Value
    Find similar Parts
    Max Processing Temp
    260
    Output Current
    2000 mA
    Maximum Duty Cycle
    0(Min) %
    Mounting
    Surface Mount
    On/Off Pin
    No
    Rise Time
    15 ns
    Lead Finish
    Tin
    Operating Temperature
    -40 to 125 °C
    Number of PWM Outputs
    1
    Synchronous Pin
    No
    Fall Time
    13 ns
    Switching Frequency
    2000 kHz
    Adjustable Output
    No

    ECCN / UNSPSC

    Description
    Value
    ECCN:
    EAR99
    SCHEDULE B:
    8542.33.0000
    HTSN:
    8542.33.0000
    UNSPSC:
    32101600
    UNSPSC VERSION:
    V15.1101

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