LM5045 - 具有集成 MOSFET 驱动器的全桥接 PWM 控制器

LM5045是TI德州仪器公司的一款PWM与谐振控制器产品，LM5045是具有集成 MOSFET 驱动器的全桥接 PWM 控制器，本站介绍了LM5045的封装应用图解、特点和优点、功能等，并给出了与LM5045相关的TI元器件型号供参考。

LM5045 - 具有集成 MOSFET 驱动器的全桥接 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

产品特性

Highest Integration Controller for Small Form Factor, High-Density Power Converters
High-Voltage Start-Up Regulator
Intelligent Sync Rectifier Start-Up Allows Linear Turnon Into Prebiased Loads
Synchronous Rectifiers Disabled in UVLO mode and Hiccup Mode
Two Independent, Programmable Synchronous Rectifier Dead-Time Adjustments
Four High-Current 2-A Bridge Gate Drivers
Wide-Bandwidth Optocoupler Interface
Configurable for Either Current Mode or Voltage Mode Control
Dual-Mode Overcurrent Protection
Resistor Programmed 2-MHz Oscillator
Programmable Line UVLO and OVP

产品应用

E-Bike
Military: Radar and Electronic Warfare
Power: Telecom DC-DC Module: Analog
Private Branch Exchange (PBX)
Solar Power Inverters
Vector Signal Generators
Microwave Ovens
Point-to-Point Microwave Backhaul
Power: Telecom/Server AC/DC Supply: Dual Controller: Analog
Solar Micro-Inverters
TETRA Base Stations
Washing Machine: Low-End

产品说明

The LM5045 PWM controller contains all of the features necessary to implement full-bridge topology power converters using either current mode or voltage mode control. This device is intended to operate on the primary side of an isolated DC-DC converter with input voltage up to 100 V. This highly integrated controller-driver provides dual 2-A high-side and low-side gate drivers for the four external bridge MOSFETs plus control signals for the secondary-side synchronous rectifier MOSFETs. External resistors program the leading and trailing edge dead-time between the main and synchronous rectifier control signals. Intelligent start-up of the synchronous rectifiers allows monotonic turnon of the power converter even with prebias load conditions. Additional features include cycle-by-cycle current limiting, hiccup mode restart, programmable soft-start, synchronous rectifier soft-start, and a 2-MHz capable oscillator with synchronization capability and thermal shutdown.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LM5045	HTSSOP (28)	9.70 mm × 4.40 mm
LM5045	WQFN (28)	5.00 mm × 5.00 mm

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