LM5035C

ACTIVE

PWM controller with Integrated half-bridge and 5V SyncFET Drive output with Increased max duty cycle

Product details

Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Feedforward Topology Half bridge, Push pull Rating Catalog Features Current limiting, High-voltage startup, Multi-topology, Pre-bias startup, Synchronization pin Duty cycle (max) (%) 50
Vin (max) (V) 15 Operating temperature range (°C) -40 to 125 Control mode Feedforward Topology Half bridge, Push pull Rating Catalog Features Current limiting, High-voltage startup, Multi-topology, Pre-bias startup, 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
  • 105-V and 2-A Half-Bridge Gate Drivers
  • Synchronous Rectifier Control Outputs With Programmable Delays
  • Reduced Dead Time Between High and Low-Side Drive for Higher Maximum Duty Cycle.
  • High Voltage (105 V) Start-Up Regulator
  • Voltage Mode Control With Line Feedforward and Volt Second Limiting
  • Resistor Programmed, 2-MHz Capable Oscillator
  • Programmable Line Undervoltage Lockout and Overvoltage Protection
  • Internal Thermal Shutdown Protection
  • Adjustable Soft Start
  • Versatile Dual Mode Overcurrent Protection With Hiccup Delay Timer
  • Cycle-by-Cycle Overcurrent Protection
  • Direct Opto-coupler Interface
  • Logic Level Synchronous Rectifier Drives
  • 5-V Reference Output
  • Packages:
    • HTSSOP-20 (Thermally Enhanced)
    • WQFN-24 (4mm × 5mm)
  • 105-V and 2-A Half-Bridge Gate Drivers
  • Synchronous Rectifier Control Outputs With Programmable Delays
  • Reduced Dead Time Between High and Low-Side Drive for Higher Maximum Duty Cycle.
  • High Voltage (105 V) Start-Up Regulator
  • Voltage Mode Control With Line Feedforward and Volt Second Limiting
  • Resistor Programmed, 2-MHz Capable Oscillator
  • Programmable Line Undervoltage Lockout and Overvoltage Protection
  • Internal Thermal Shutdown Protection
  • Adjustable Soft Start
  • Versatile Dual Mode Overcurrent Protection With Hiccup Delay Timer
  • Cycle-by-Cycle Overcurrent Protection
  • Direct Opto-coupler Interface
  • Logic Level Synchronous Rectifier Drives
  • 5-V Reference Output
  • Packages:
    • HTSSOP-20 (Thermally Enhanced)
    • WQFN-24 (4mm × 5mm)

The LM5035C half-bridge controller and gate driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feedforward.

The LM5035C is a functional variant of the LM5035B half-bridge PWM controller. The amplitude of the SR1 and SR2 waveforms are 5 V instead of the VCC level. Also, the soft-stop function is disabled in the LM5035C.

The LM5035, LM5035A, LM5035B, and LM5035C include a floating high-side gate driver, which is capable of operating with supply voltages up to 105 V. Both the high-side and low-side gate drivers are capable of 2-A peak. An internal high-voltage start-up regulator is included, along with programmable line undervoltage lockout (UVLO) and overvoltage protection (OVP). The oscillator is programmed with a single resistor to frequencies up to 2 MHz. The oscillator can also be synchronized to an external clock. A current sense input and a programmable timer provide cycle-by-cycle current limit and adjustable hiccup mode overload protection. The differences between LM5035, LM5035A, LM5035B, and LM5035C are summarized in the Device Comparison Table.

The LM5035C half-bridge controller and gate driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feedforward.

The LM5035C is a functional variant of the LM5035B half-bridge PWM controller. The amplitude of the SR1 and SR2 waveforms are 5 V instead of the VCC level. Also, the soft-stop function is disabled in the LM5035C.

The LM5035, LM5035A, LM5035B, and LM5035C include a floating high-side gate driver, which is capable of operating with supply voltages up to 105 V. Both the high-side and low-side gate drivers are capable of 2-A peak. An internal high-voltage start-up regulator is included, along with programmable line undervoltage lockout (UVLO) and overvoltage protection (OVP). The oscillator is programmed with a single resistor to frequencies up to 2 MHz. The oscillator can also be synchronized to an external clock. A current sense input and a programmable timer provide cycle-by-cycle current limit and adjustable hiccup mode overload protection. The differences between LM5035, LM5035A, LM5035B, and LM5035C are summarized in the Device Comparison Table.

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Technical documentation

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* Data sheet LM5035C PWM Controller With Integrated Half-Bridge and SyncFET Drivers datasheet (Rev. D) PDF | HTML 23 Mar 2016

Design & development

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Evaluation board

LM5035CEVAL — Evaluation Board for the LM5035C

The LM5035C evaluation board is designed to provide the design engineer with a fully functional power converter based on the Half Bridge topology to evaluate the LM5035C controller. The LM5035C is a functional variant of the LM5035B Half-Bridge PWM Controller. The amplitude of the SR control (...)

User guide: PDF
Not available on TI.com
Simulation model

LM5035C PSPICE Model

SNVM005.ZIP (314 KB) - PSpice Model
Simulation model

LM5035C TINA Transient model

SNVM654.ZIP (26 KB) - TINA-TI Spice Model
Simulation model

LM5035C TINA Transient reference design

SNVM653.ZIP (91 KB) - TINA-TI Reference Design
Package Pins CAD symbols, footprints & 3D models
HTSSOP (PWP) 20 Ultra Librarian
WQFN (NHZ) 24 Ultra Librarian

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