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LM5116-HT

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Synchroner Abwärtsregler, 80 V, hohe Temperatur, großer Bereich

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Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.
LM5146 AKTIV Synchroner DC/DC-Abwärtscontroller mit großem Arbeitsbereich, 100 V Smaller device footprint optimized for EMI requirements.

LM5116-HT

AKTIV
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Produktdetails

Rating High Temp Topology Buck Iout (max) (A) 20 Vin (max) (V) 80 Vin (min) (V) 6 Vout (max) (V) 80 Vout (min) (V) 1.215 Control mode current mode control Features Adjustable current limit, Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Duty cycle (max) (%) 98 Iq (typ) (A) 0.0046 Number of phases 1 Operating temperature range (°C) -55 to 175
Rating High Temp Topology Buck Iout (max) (A) 20 Vin (max) (V) 80 Vin (min) (V) 6 Vout (max) (V) 80 Vout (min) (V) 1.215 Control mode current mode control Features Adjustable current limit, Enable, Light Load Efficiency, Load Disconnect, Output discharge, Power good, Pre-Bias Start-Up, Synchronous Rectification, UVLO adjustable Duty cycle (max) (%) 98 Iq (typ) (A) 0.0046 Number of phases 1 Operating temperature range (°C) -55 to 175
CDIP_SB (JD) 20 259.065 mm² (— mm × — mm)
  • 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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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LM5116-HT Wide Range Synchronous Buck Controller datasheet (Rev. B) 31.01.2014
Whitepaper Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 10.04.2019
Anwendungshinweis Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12.03.2019

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Simulationsmodell

LM5116 PSpice Average Model

SNVM346.ZIP (53 KB) - PSpice-Modell
Unterstützte Produkte und Hardware
Simulationsmodell

LM5116 PSpice Transient Model (Rev. C)

SNVM345C.ZIP (101 KB) - PSpice-Modell
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Simulationsmodell

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

SNVM051B.TSC (159 KB) - TINA-TI-Referenzdesign
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Simulationsmodell

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

SNVM052B.ZIP (15 KB) - TINA-TI Spice-Modell
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Simulationsmodell

LM5116 Unencrypted PSpice Average Model

SNVM959.ZIP (2 KB) - PSpice-Modell
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Simulationsmodell

LM5116 Unencrypted PSpice Transient Model (Rev. A)

SNVM958A.ZIP (6 KB) - PSpice-Modell
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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
CDIP_SB (JD) 20 Ultra Librarian
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