Half-bridge PWM controller with advanced current limit


Product details


Topology Full-Bridge, Half-Bridge, Push-Pull Control method Voltage VCC (Min) (V) 8 VCC (Max) (V) 15 Duty cycle (Max) (%) 50 UVLO thresholds on/off (V) Programmable/1.25V Frequency (Max) (kHz) 2000 Operating temperature range (C) -40 to 125 Gate drive (Typ) (A) 2 Features Current Limiting, HV Start-up, Multi-topology, Synchronization Pin Rating Catalog open-in-new Find other PWM controllers & resonant controllers

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 WQFN (NHZ) 24 20 mm² 5 x 4 open-in-new Find other PWM controllers & resonant controllers


  • 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)

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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

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet LM5039 Half-Bridge PWM Controller with Average Current Limit datasheet (Rev. D) Mar. 21, 2013
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Technical articles Introducing TI’s new Power Solution Video Series Apr. 19, 2012
Application notes Average Current Limit Balances Center Point of Half-Bridge Input Caps Apr. 28, 2010
User guides AN-2025 LM5039 Evaluation Board (Rev. C) Feb. 17, 2010

Design & development

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Hardware development

document-generic User guide

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 (...)

Design tools & simulation

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Reference designs

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PMP10110 The PMP10110 design converts the universal input AC voltage to isolated 17V...30V@6A and is suitable to charge lead-acid or Li-Ion batteries. The converter is a constant-V and constant-I genarator and the set points for output voltage (charge level) and current are settable by means of two PWM (...)
document-generic Schematic document-generic User guide
36-60Vin, 350W Slow Drain Modulation Power Converter with PSFB ZTE and HSHB Reference Design
PMP7246 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 (...)
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CAD/CAE symbols

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HTSSOP (PWP) 20 View options
WQFN (NHZ) 24 View options

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