LM5115

現行

75V、二次側後置穩壓器/同步降壓控制器

現在提供此產品的更新版本

open-in-new 比較替代產品
功能相同,但引腳輸出與所比較的產品不同
LM5141 現行 低 Iq、寬輸入範圍雙同步降壓控制器 Optional spread spectrum for improved EMI.

產品詳細資料

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 Features Frequency synchronization Duty cycle (max) (%) 85 Number of phases 1
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 Features Frequency synchronization Duty cycle (max) (%) 85 Number of phases 1
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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類型 標題 日期
* Data sheet LM5115 Secondary Side Post Regulator / Synchronous Buck Controller datasheet (Rev. E) 2013年 3月 21日
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019年 4月 10日
Analog Design Journal Reduce buck-converter EMI and voltage stress by minimizing inductive parasitics 2016年 7月 21日
EVM User's guide AN-1368 LM5115/5025A Evaluation Board (Rev. A) 2013年 4月 26日
EVM User's guide AN-1367 LM5115 HV DC Evaluation Board (Rev. B) 2013年 4月 24日
EVM User's guide AN-1542 LM5115A Evaluation Board (Rev. B) 2013年 4月 24日

設計與開發

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封裝 針腳 CAD 符號、佔位空間與 3D 模型
TSSOP (PW) 16 Ultra Librarian
WSON (NHQ) 16 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

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