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LM5035A - 产品图解：
LM5035A-具有集成半桥接和同步 FET 驱动器的 PWM 控制器
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TI产品 - LM5035A介绍

LM5035A - 具有集成半桥接和同步 FET 驱动器的 PWM 控制器

LM5035A是TI德州仪器公司的一款PWM与谐振控制器产品，LM5035A是具有集成半桥接和同步 FET 驱动器的 PWM 控制器，本站介绍了LM5035A的封装应用图解、特点和优点、功能等，并给出了与LM5035A相关的TI元器件型号供参考。

LM5035A - 具有集成半桥接和同步 FET 驱动器的 PWM 控制器 - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品描述

The LM5035A 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 LM5035A is a functional variant of the LM5035 half-bridge PWM controller. The VCC current limit threshold has been increased to 35 mA. The soft start and soft start currents have been increased from 50 µA to 100 µA. The BST UV threshold has been lowered to less than the VCC UV threshold. The ratio of the T1 and T2 delays on the SR1 and SR2 outputs has been increased from 2:1 to 3:1. 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) 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 .

产品特性

  • 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
  • Resistor Programmed, 2MHz Capable Oscillator
  • Patent Pending Oscillator Synchronization
  • Programmable Line Under-Voltage Lockout
  • Line 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

  • HTSSOP-20
  • WQFN-24 (4mm x 5mm)
  • HTSSOP-28 (LM5035A-1 only)

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