LM5035B 具有集成半桥接和同步 FET 驱动器的 PWM 控制器 | 德州仪器 TI.com.cn

LM5035B (正在供货) 具有集成半桥接和同步 FET 驱动器的 PWM 控制器

具有集成半桥接和同步 FET 驱动器的 PWM 控制器 - LM5035B
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A new half-bridge controller

LM5036

Integrates a fly-buck converter as auxiliary bias supply. Fully regulated pre-bias start-up. Enhanced CBC with high/low-side PWM pulse width matching function.

描述

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 .

特性

  • 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.

参数

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Part number 立即下单 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 立即下单 Half-Bridge     Feedforward
Voltage    
8     15     2000     Programmable/1.25V     50     2     Current Limiting
HV Start-up
Multi-topology
Pre-Bias Start-Up
Synchronization Pin    
Catalog     -40 to 125     HTSSOP | 20
WQFN | 24    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
LM5035C 立即下单 Half-Bridge
Push-Pull    
Feedforward
Voltage    
8     15     2000     Programmable/1.25V     50     2     Current Limiting
HV Start-up
Multi-topology
Pre-Bias Start-Up
Synchronization Pin    
Catalog     -40 to 125     HTSSOP | 20
WQFN | 24    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
LM5036 立即下单 Full-Bridge
Half-Bridge
Push-Pull    
Feedforward
Voltage    
    2000     Programmable/1.25V     50     2     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    
Catalog     -40 to 125     WQFN | 28     28WQFN: 25 mm2: 5 x 5 (WQFN | 28)    
LM5039 立即下单 Full-Bridge
Half-Bridge
Push-Pull    
Voltage     8     15     2000     Programmable/1.25V     50     2     Current Limiting
HV Start-up
Multi-topology
Synchronization Pin    
Catalog     -40 to 125     HTSSOP | 20
WQFN | 24    
20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)
24WQFN: 20 mm2: 4 x 5 (WQFN | 24)    
UCC28250 立即下单 Forward
Full-Bridge
Half-Bridge
Push-Pull    
Current
Voltage    
4.7     17     1000     4.3/4.1     100     0.2     Current Limiting
HV Start-up
SR Logic    
Catalog     -40 to 125     QFN | 20
TSSOP | 20    
20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
UCC28251 立即下单 Forward
Full-Bridge
Half-Bridge
Push-Pull    
Current
Feedforward
Voltage    
4.7     17     1000     4.3/4.1     100     0.2     Current Limiting
Leading Edge Blanking
Multi-topology
Pre-Bias Start-Up
Programmable Slope Compensation
SR Logic
Soft Start
Synchronization Pin    
Catalog     -40 to 125     QFN | 20
TSSOP | 20    
20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)