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.

• 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

• Topology
• Full-Bridge, Half-Bridge, Push-Pull
• Duty cycle (Max) (%)
• 50
• Supply voltage (Max) (V)
• 14
• UVLO thresholds on/off (V)
• Programmable/1.25V
• Features
• Current Limiting, HV Start-up, Integrated Gate Drivers, Multi-topology, SR Logic, Synchronization Pin
• Operating temperature range (C)
• -40 to 125
• Rating
• Catalog
• Frequency (Max) (kHz)
• 2000
• Gate drive (Typ) (A)
• 1.5, 2

LM5045的完整型号有：LM5045MH/NOPB、LM5045MHX/NOPB、LM5045SQ/NOPB、LM5045SQX/NOPB，以下是这些产品的关键参数及官网采购报价：

LM5045MH/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-28，包装数量MPQ：48个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM5045MH/NOPB的批量USD价格：2.218（1000+）

LM5045MHX/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-28，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM5045MHX/NOPB的批量USD价格：1.848（1000+）

LM5045SQ/NOPB，工作温度：-40 to 125，封装：WQFN (RSG)-28，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM5045SQ/NOPB的批量USD价格：2.218（1000+）

LM5045SQX/NOPB，工作温度：-40 to 125，封装：WQFN (RSG)-28，包装数量MPQ：4500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LM5045SQX/NOPB的批量USD价格：1.848（1000+）

LM5045EVAL — 用于 LM5045 的评估板

The LM5045 evaluation board is designed to provide the design engineer with a fully functional power converter based on the full-bridge topology to evaluate the LM5045 PWM controller. The evaluation board is provided in an industry standard quarter brick footprint.