LM5116-HT

現行

80V 高溫寬範圍同步降壓控制器

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
LM5146 現行 具寬占空比範圍的 100-V 同步降壓 DC/DC 控制器 Smaller device footprint optimized for EMI requirements.

產品詳細資料

Vin (min) (V) 6 Vin (max) (V) 80 Iout (max) (A) 20 Operating temperature range (°C) -55 to 175 Control mode Voltage mode Rating High Temp Vout (min) (V) 1.215 Vout (max) (V) 80 Features Enable, Frequency synchronization, Light Load Efficiency Iq (typ) (µA) 4600 Duty cycle (max) (%) 98 Number of phases 1
Vin (min) (V) 6 Vin (max) (V) 80 Iout (max) (A) 20 Operating temperature range (°C) -55 to 175 Control mode Voltage mode Rating High Temp Vout (min) (V) 1.215 Vout (max) (V) 80 Features Enable, Frequency synchronization, Light Load Efficiency Iq (typ) (µA) 4600 Duty cycle (max) (%) 98 Number of phases 1
CDIP_SB (JD) 20 259.065 mm² 25.65 x 10.1
  • Emulated Peak Current Mode
  • Wide Operating Range Up to 80 V
  • Low IQ Shutdown (< 10 µA)
  • Drives Standard or Logic Level MOSFETs
  • Robust 3.5-A Peak Gate Drive
  • Free-Run or Synchronous Operation to 1 MHz
  • Optional Diode Emulation Mode
  • Programmable Output from 1.215 V to 80 V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Soft-Start
  • Programmable Line Under-Voltage Lockout
  • Automatic Switch to External Bias Supply
  • Emulated Peak Current Mode
  • Wide Operating Range Up to 80 V
  • Low IQ Shutdown (< 10 µA)
  • Drives Standard or Logic Level MOSFETs
  • Robust 3.5-A Peak Gate Drive
  • Free-Run or Synchronous Operation to 1 MHz
  • Optional Diode Emulation Mode
  • Programmable Output from 1.215 V to 80 V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Soft-Start
  • Programmable Line Under-Voltage Lockout
  • Automatic Switch to External Bias Supply

The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle by cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The operating frequency is programmable from 50 kHz to 1 MHz. The LM5116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current. Additional features include a high voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle by cycle current limit and adjustable line under-voltage lockout.

The LM5116 is a synchronous buck controller intended for step-down regulator applications from a high voltage or widely varying input supply. The control method is based upon current mode control utilizing an emulated current ramp. Current mode control provides inherent line feed-forward, cycle by cycle current limiting and ease of loop compensation. The use of an emulated control ramp reduces noise sensitivity of the pulse-width modulation circuit, allowing reliable control of very small duty cycles necessary in high input voltage applications. The operating frequency is programmable from 50 kHz to 1 MHz. The LM5116 drives external high-side and low-side NMOS power switches with adaptive dead-time control. A user-selectable diode emulation mode enables discontinuous mode operation for improved efficiency at light load conditions. A low quiescent current shutdown disables the controller and consumes less than 10 µA of total input current. Additional features include a high voltage bias regulator, automatic switch-over to external bias for improved efficiency, thermal shutdown, frequency synchronization, cycle by cycle current limit and adjustable line under-voltage lockout.

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技術文件

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類型 標題 日期
* Data sheet LM5116-HT Wide Range Synchronous Buck Controller datasheet (Rev. B) 2014年 1月 31日
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 2024年 4月 30日
White paper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 2019年 4月 10日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

模擬型號

LM5116 PSpice Average Model

SNVM346.ZIP (53 KB) - PSpice Model
模擬型號

LM5116 PSpice Transient Model (Rev. C)

SNVM345C.ZIP (101 KB) - PSpice Model
模擬型號

LM5116 TINA-TI Transient Reference Design (Rev. B)

SNVM051B.TSC (159 KB) - TINA-TI Reference Design
模擬型號

LM5116 TINA-TI Transient Spice Model (Rev. B)

SNVM052B.ZIP (15 KB) - TINA-TI Spice Model
模擬型號

LM5116 Unencrypted PSpice Average Model

SNVM959.ZIP (2 KB) - PSpice Model
模擬型號

LM5116 Unencrypted PSpice Transient Model (Rev. A)

SNVM958A.ZIP (6 KB) - PSpice Model
封裝 針腳 CAD 符號、佔位空間與 3D 模型
CDIP_SB (JD) 20 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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