LM5035C PWM Controller with Integrated Half-Bridge and SyncFET Drivers | TI.com

LM5035C (ACTIVE)

PWM Controller with Integrated Half-Bridge and SyncFET Drivers

 

Description

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.

Features

  • 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)

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Parametrics Compare all products in PWM controllers & resonant controllers

 
Topology
Control method
VCC (Min) (V)
VCC (Max) (V)
Frequency (Max) (kHz)
UVLO thresholds on/off (V)
Duty cycle (Max) (%)
Gate drive (Typ) (A)
Features
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
LM5035C LM5035B LM5036 LM5039 UCC28250 UCC28251
Half-Bridge
Push-Pull    
Half-Bridge     Full-Bridge
Half-Bridge
Push-Pull    
Full-Bridge
Half-Bridge
Push-Pull    
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Forward
Full-Bridge
Half-Bridge
Push-Pull    
Feedforward
Voltage    
Feedforward
Voltage    
Feedforward
Voltage    
Voltage     Current
Voltage    
Current
Feedforward
Voltage    
8     8       8     4.7     4.7    
15     15       15     17     17    
2000     2000     2000     2000     1000     1000    
Programmable/1.25V     Programmable/1.25V     Programmable/1.25V     Programmable/1.25V     4.3/4.1     4.3/4.1    
50     50     50     50     100     100    
2     2     2     2     0.2     0.2    
Current Limiting
HV Start-up
Multi-topology
Pre-Bias Start-Up
Synchronization Pin    
Current Limiting
HV Start-up
Multi-topology
Pre-Bias Start-Up
Synchronization Pin    
Current Limiting
Frequency Synchronization
HV Start-up
Input Line Monitor
Integrated Switch
Leading Edge Blanking
Multi-topology
Pre-Bias Start-Up
Soft Start
Synchronization Pin
Thermal Shutdown
Wide DC input    
Current Limiting
HV Start-up
Multi-topology
Synchronization Pin    
Current Limiting
HV Start-up
SR Logic    
Current Limiting
Leading Edge Blanking
Multi-topology
Pre-Bias Start-Up
Programmable Slope Compensation
SR Logic
Soft Start
Synchronization Pin    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
HTSSOP | 20
WQFN | 24    
HTSSOP | 20
WQFN | 24    
WQFN | 28     HTSSOP | 20
WQFN | 24    
QFN | 20
TSSOP | 20    
QFN | 20
TSSOP | 20    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
28WQFN: 25 mm2: 5 x 5 (WQFN | 28)     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)