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

LM5115A

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具有上电/断电跟踪功能的 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.

LM5115A

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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 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 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
  • Power-up/Power-down Tracking
  • Self-synchronization to Main Channel Output
  • Leading Edge Pulse Width Modulation
  • Valley Current Mode Control
  • Standalone DC/DC Synchronous Buck Mode
  • 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 Package

All trademarks are the property of their respective owners.

  • Power-up/Power-down Tracking
  • Self-synchronization to Main Channel Output
  • Leading Edge Pulse Width Modulation
  • Valley Current Mode Control
  • Standalone DC/DC Synchronous Buck Mode
  • 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 Package

All trademarks are the property of their respective owners.

The LM5115A controller contains all of the features necessary to produce multiple tracking outputs using the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. LM5115A can be also used as a standalone DC/DC synchronous buck controller (Refer to section). 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 LM5115A 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 LM5115A controller contains all of the features necessary to produce multiple tracking outputs using the Secondary Side Post Regulation (SSPR) technique. The SSPR technique develops a highly efficient and well regulated auxiliary output from the secondary side switching waveform of an isolated power converter. LM5115A can be also used as a standalone DC/DC synchronous buck controller (Refer to section). 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 LM5115A 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 Secondary Side Post Regulator/DC-DC Converter with Power-up/Power-down Tracking 数据表 (Rev. B) 2013年 3月 26日
应用手册 Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) 2013年 4月 23日
应用手册 Minimizing FET Losses For a High Input Rail Buck Converter (cn) 最新英语版本 (Rev.A) 2007年 9月 5日

设计和开发

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封装 引脚 下载
TSSOP (PW) 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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