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AC/DC & DC/DC controllers (external FET)

LM5115

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75V、次级侧后置稳压器/同步降压控制器

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LM5141 正在供货 低 Iq、宽输入范围同步降压控制器 Optional spread spectrum for improved EMI.

LM5115

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产品详情

Vin (min) (V) 4.5 Vin (max) (V) 75 Operating temperature range (°C) -40 to 125 Control mode Voltage mode, current mode Rating Catalog Vout (min) (V) 0.75 Vout (max) (V) 13.5 Duty cycle (max) (%) 85
Vin (min) (V) 4.5 Vin (max) (V) 75 Operating temperature range (°C) -40 to 125 Control mode Voltage mode, current mode Rating Catalog Vout (min) (V) 0.75 Vout (max) (V) 13.5 Duty cycle (max) (%) 85
TSSOP (PW) 16 32 mm² 5 x 6.4 WSON (NHQ) 16 25 mm² 5 x 5
  • Self-Synchronization to Main Channel Output
  • Standalone DC/DC Synchronous Buck Mode
  • Leading Edge Pulse Width Modulation
  • Voltage-Mode Control with Current Injection and Input Line Feed-Forward
  • Operates from AC or DC Input up to 75V
  • Wide 4.5V to 30V Bias Supply Range
  • Wide 0.75V to 13.5V Output Range.
  • Top and Bottom Gate Drivers Sink 2.5A Peak
  • Adaptive Gate Driver Dead-Time Control
  • Wide Bandwidth Error Amplifier (4MHz)
  • Programmable Soft-Start
  • Thermal Shutdown Protection
  • TSSOP-16 or Thermally Enhanced WSON-16 Packages

All trademarks are the property of their respective owners.

  • Self-Synchronization to Main Channel Output
  • Standalone DC/DC Synchronous Buck Mode
  • Leading Edge Pulse Width Modulation
  • Voltage-Mode Control with Current Injection and Input Line Feed-Forward
  • Operates from AC or DC Input up to 75V
  • Wide 4.5V to 30V Bias Supply Range
  • Wide 0.75V to 13.5V Output Range.
  • Top and Bottom Gate Drivers Sink 2.5A Peak
  • Adaptive Gate Driver Dead-Time Control
  • Wide Bandwidth Error Amplifier (4MHz)
  • Programmable Soft-Start
  • Thermal Shutdown Protection
  • TSSOP-16 or Thermally Enhanced WSON-16 Packages

All trademarks are the property of their respective owners.

The LM5115 is a versatile switching regulator controller. It has two main application configurations. The first is utilizing the Secondary Side Post Regulation (SSPR) technique to implement multiple output power converters. In the second configuration, it can be used as a standalone synchronous buck controller (Please see for more details). The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.

The LM5115 is a versatile switching regulator controller. It has two main application configurations. The first is utilizing the Secondary Side Post Regulation (SSPR) technique to implement multiple output power converters. In the second configuration, it can be used as a standalone synchronous buck controller (Please see for more details). The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. Regulation of the auxiliary output voltage is achieved by leading edge pulse width modulation (PWM) of the main channel duty cycle. Leading edge modulation is compatible with either current mode or voltage mode control of the main output. The LM5115 drives external high side and low side NMOS power switches configured as a synchronous buck regulator. A current sense amplifier provides overload protection and operates over a wide common mode input range. Additional features include a low dropout (LDO) bias regulator, error amplifier, precision reference, adaptive dead time control of the gate signals and thermal shutdown.
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类型 标题 下载最新的英语版本 日期
* 数据表 LM5115 Secondary Side Post Regulator / Synchronous Buck Controller 数据表 (Rev. E) 2013年 3月 21日
白皮书 Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019年 4月 10日
模拟设计期刊 Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
EVM 用户指南 AN-1368 LM5115/5025A Evaluation Board (Rev. A) 2013年 4月 26日
EVM 用户指南 AN-1367 LM5115 HV DC Evaluation Board (Rev. B) 2013年 4月 24日
EVM 用户指南 AN-1542 LM5115A Evaluation Board (Rev. B) 2013年 4月 24日
用户指南 Application Note 1542 LM5115A Evaluation Board (cn) 2007年 3月 17日
用户指南 Application Note 1367 LM5115 HV DC Evaluation Board (cn) 2005年 10月 18日

设计和开发

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封装 引脚 下载
TSSOP (PW) 16 查看选项
WSON (NHQ) 16 查看选项
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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

支持和培训

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