LM5039

ACTIVE

Half-bridge PWM controller with advanced current limit

Product details

Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Voltage Topology Half bridge Rating Catalog Features Current limiting, High-voltage startup, Multi-topology, Synchronization pin Duty cycle (max) (%) 50
Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Voltage Topology Half bridge Rating Catalog Features Current limiting, High-voltage startup, Multi-topology, Synchronization pin Duty cycle (max) (%) 50
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 WQFN (NHZ) 24 20 mm² 5 x 4
  • 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

Packages

  • HTSSOP-20 (Thermally enhanced)
  • WQFN-24 (4mm x 5mm)

All trademarks are the property of their respective owners.

  • 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

Packages

  • HTSSOP-20 (Thermally enhanced)
  • WQFN-24 (4mm x 5mm)

All trademarks are the property of their respective owners.

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.

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.

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Technical documentation

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Type Title Date
* Data sheet LM5039 Half-Bridge PWM Controller with Average Current Limit datasheet (Rev. D) 21 Mar 2013
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Average Current Limit Balances Center Point of Half-Bridge Input Caps 28 Apr 2010
EVM User's guide AN-2025 LM5039 Evaluation Board (Rev. C) 17 Feb 2010

Design & development

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

Evaluation board

LM5039EVAL — Evaluation Board for the LM5039

The 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. The LM5039 is a functional variant of the LM5035B controller, featuring an average current limit during an overload (...)

User guide: PDF
Not available on TI.com
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Test report: PDF
Schematic: PDF
Reference designs

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This is a 350W High Speed Full Bridge Phase Shift ZVT Synchronous Rectification DC/DC reference design. It is built for telecom applications to supply a RF Power Amplifier stage. The design is utilizing UCC28950 voltage mode forward and average current limitation backward converter (two quadrant (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 20 Ultra Librarian
WQFN (NHZ) 24 Ultra Librarian

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