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Home » NEWEST Products » New by Manufacturer » Texas Instruments » LM5039 Half-Bridge PWM Controller and Evaluation Kit - TI
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Texas Instruments LM5039 Half-Bridge PWM Controller with Advanced Current Limit
Texas Instruments LM5039 Half-Bridge PWM Controller with Advanced Current Limit

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Texas Instruments LM5039 Half-Bridge PWM Controller

Texas Instruments LM5039 Half-Bridge PWM Controller with Advanced Current Limit contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. TI LM5039 PWM controller 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.

LM5039 evaluation board is designed to provide the design engineer with a fully functional power converter based on the half-bridge topology to evaluate the LM5039 controller.

  • 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
Eval Board Features
  • Input Operating Range: 36V to 75V
  • Output Voltage: 3.3V
  • Measured Efficiency: 89% @ 30A, 92% @ 15A
  • Frequency of Operation: 400kHz
  • Board Size: 2.28 x 1.45 x 0.5 inches
  • Load Regulation: 0.2%
  • Line Regulation 0.1%
  • Line UVLO (31V/30V on/off)
  • Constant Current Limit

LM5039 Application Circuit

Application Circuit

Eval Board Set Up

Eval Board Set Up

TI Video: LM5039 in High Density Isolated Power Supplies

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  • Texas Instruments
  • Semiconductors|Integrated Circuits|IC-Power Management