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LM5041

正在供货

具有断续模式的级联 PWM 控制器

产品详情

Topology Push pull Control mode Current Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 1000 Features Current limiting, Programmable soft start, Synchronization pin UVLO thresholds on/off (V) Programmable/2.5V Operating temperature range (°C) -40 to 125 Rating Catalog Gate drive (typ) (A) 1.5 Vin (max) (V) 15
Topology Push pull Control mode Current Duty cycle (max) (%) 50 Switching frequency (max) (kHz) 1000 Features Current limiting, Programmable soft start, Synchronization pin UVLO thresholds on/off (V) Programmable/2.5V Operating temperature range (°C) -40 to 125 Rating Catalog Gate drive (typ) (A) 1.5 Vin (max) (V) 15
TSSOP (PW) 16 32 mm² 5 x 6.4 WSON (NHQ) 16 25 mm² 5 x 5
  • Internal Start-up Bias Regulator
  • Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis
  • Current Mode Control
  • Internal Error Amplifier with Reference
  • Dual Mode Over-Current Protection
  • Leading Edge Blanking
  • Programmable Push-Pull Overlap or Dead Time
  • Internal 1.5A Push-Pull Gate Drivers
  • Programmable Soft-start
  • Programmable Oscillator with Sync Capability
  • Precision Reference
  • Thermal Shutdown

Packages

  • TSSOP-16
  • WSON-16 (5x5 mm) Thermally Enhanced

All trademarks are the property of their respective owners.

  • Internal Start-up Bias Regulator
  • Programmable Line Under-Voltage Lockout (UVLO) with Adjustable Hysteresis
  • Current Mode Control
  • Internal Error Amplifier with Reference
  • Dual Mode Over-Current Protection
  • Leading Edge Blanking
  • Programmable Push-Pull Overlap or Dead Time
  • Internal 1.5A Push-Pull Gate Drivers
  • Programmable Soft-start
  • Programmable Oscillator with Sync Capability
  • Precision Reference
  • Thermal Shutdown

Packages

  • TSSOP-16
  • WSON-16 (5x5 mm) Thermally Enhanced

All trademarks are the property of their respective owners.

The LM5041 PWM controller contains all of the features necessary to implement either current-fed or voltage-fed push-pull or bridge power converters. These “Cascaded” topologies are well suited for multiple output and higher power applications. The LM5041’s four control outputs include: the buck stage controls (HD and LD) and the push-pull control outputs (PUSH and PULL). Push-pull outputs are driven at 50% nominal duty cycle at one half of the switching frequency of the buck stage and can be configured for either a specified overlap time (for current-fed applications) or a specified both-off time (for voltage-fed applications). Push-pull stage MOSFETs can be driven directly from the internal gate drivers while the buck stage requires an external driver such as the LM5102. The LM5041 includes a high-voltage start-up regulator that operates over a wide input range of 15V to 100V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 1 MHz and total propagation delays of less than 100ns. Additional features include: line Under-Voltage Lockout (UVLO), soft-start, an error amplifier, precision voltage reference, and thermal shutdown.

The LM5041 PWM controller contains all of the features necessary to implement either current-fed or voltage-fed push-pull or bridge power converters. These “Cascaded” topologies are well suited for multiple output and higher power applications. The LM5041’s four control outputs include: the buck stage controls (HD and LD) and the push-pull control outputs (PUSH and PULL). Push-pull outputs are driven at 50% nominal duty cycle at one half of the switching frequency of the buck stage and can be configured for either a specified overlap time (for current-fed applications) or a specified both-off time (for voltage-fed applications). Push-pull stage MOSFETs can be driven directly from the internal gate drivers while the buck stage requires an external driver such as the LM5102. The LM5041 includes a high-voltage start-up regulator that operates over a wide input range of 15V to 100V. The PWM controller is designed for high-speed capability including an oscillator frequency range up to 1 MHz and total propagation delays of less than 100ns. Additional features include: line Under-Voltage Lockout (UVLO), soft-start, an error amplifier, precision voltage reference, and thermal shutdown.

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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 LM5041 Cascaded PWM Controller 数据表 (Rev. D) 2013年 3月 25日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
EVM 用户指南 AN-1299 LM5041 Evaluation Board (Rev. A) 2013年 5月 6日
应用手册 DC - DC Converter Featuring the Cascaded Power Converter Topology 2007年 3月 21日
白皮书 Communications System Power Supply Designs 2004年 1月 1日

设计和开发

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LM5041EVAL — 级联 PWM 控制器

LM5041 Cascaded PWM Controller

用户指南: PDF
TI.com 上无现货
仿真模型

LM5041 TINA-TI Reference Design

SNVM423.TSC (613 KB) - TINA-TI Reference Design
仿真模型

LM5041 TINA-TI Transient Spice Model

SNVM424.ZIP (28 KB) - TINA-TI Spice Model
仿真模型

LM5041 Unencrypted PSpice Transient Model Package (Rev. A)

SNVM422A.ZIP (53 KB) - PSpice Model
封装 引脚 下载
TSSOP (PW) 16 查看选项
WSON (NHQ) 16 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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