LM5035B PWM Controller with Integrated Half-Bridge and SyncFET Drivers | TI.com

LM5035B (ACTIVE)

PWM Controller with Integrated Half-Bridge and SyncFET Drivers

 

Description

The LM5035B 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 LM5035B is a functional variant of the LM5035A half-bridge PWM controller. The LM5035B provides higher maximum duty cycle and higher start-up regulator output current than the LM5035A or LM5035. Also, the Synchronous Rectifier drive outputs of the LM5035B are held low in shutdown modes.

The LM5035, LM5035A, and LM5035B include a floating high-side gate driver, which 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) and overvoltage protection (OVP). 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 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 .

Features

  • 105V / 2A Half-Bridge Gate Drivers
  • Synchronous Rectifier Control Outputs with Programmable Delays
  • Synchronous Rectifiers Turned Off in Shutdown Modes.
  • Reduced Deadtime Between High and Low Side Drive for Higher Maximum Duty Cycle.
  • High Voltage (105V) Start-up Regulator
  • Voltage mode Control with Line Feed-Forward and Volt Second Limiting
  • Resistor Programmed, 2MHz Capable Oscillator
  • Programmable Line Under-Voltage Lockout and Over-Voltage Protection
  • Internal Thermal Shutdown Protection
  • Adjustable Soft-Start
  • Versatile Dual Mode Over-Current Protection with Hiccup Delay Timer
  • Cycle-by-Cycle Over-Current Protection
  • Direct Opto-coupler Interface
  • 5V Reference Output

Packages

  • TSSOP-20
  • WQFN-24 (4mm x 5mm)

All trademarks are the property of their respective owners.

View more

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)
LM5035B LM5035C LM5036 LM5039 UCC28250 UCC28251
Half-Bridge     Half-Bridge
Push-Pull    
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)