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LM5116WG

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LM5146 AKTIV Synchroner DC/DC-Abwärtscontroller mit großem Arbeitsbereich, 100 V Smaller device footprint optimized for EMI requirements.

LM5116WG

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Produktdetails

Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 100 Vin (min) (V) 6 Vout (max) (V) 80 Vout (min) (V) 1.215 Control mode current mode 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) -40 to 125
Rating Catalog Topology Buck Iout (max) (A) 20 Vin (max) (V) 100 Vin (min) (V) 6 Vout (max) (V) 80 Vout (min) (V) 1.215 Control mode current mode 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) -40 to 125
CFP (NAR) 20 99.290124 mm² (— mm × — mm)
  • Hermetic Package for Harsh Operating Environments
  • Emulated Peak Current Mode
  • Wide Operating Range up to 100V
  • Low IQ Shutdown (< 10 µA)
  • Drives Standard or Logic Level MOSFETs
  • Robust 3.5A Peak Gate Drive
  • Free-Run or Synchronous Operation to 1 MHz
  • Optional Diode Emulation Mode
  • Programmable Output from 1.215V to 80V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Soft-Start
  • Programmable Line Under-Voltage Lockout
  • Automatic Switch to External Bias Supply
  • CPGA-20 with No Thermal Shutdown

All trademarks are the property of their respective owners.
  • Hermetic Package for Harsh Operating Environments
  • Emulated Peak Current Mode
  • Wide Operating Range up to 100V
  • Low IQ Shutdown (< 10 µA)
  • Drives Standard or Logic Level MOSFETs
  • Robust 3.5A Peak Gate Drive
  • Free-Run or Synchronous Operation to 1 MHz
  • Optional Diode Emulation Mode
  • Programmable Output from 1.215V to 80V
  • Precision 1.5% Voltage Reference
  • Programmable Current Limit
  • Programmable Soft-Start
  • Programmable Line Under-Voltage Lockout
  • Automatic Switch to External Bias Supply
  • CPGA-20 with No Thermal Shutdown

All trademarks are the property of their respective owners.

The LM5116WG 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 LM5116WG 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, frequency synchronization, cycle by cycle current limit and adjustable line under-voltage lockout. The device is available in a CPGA-20 high temperature ceramic package with the thermal shutdown feature disabled.

The LM5116WG 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 LM5116WG 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, frequency synchronization, cycle by cycle current limit and adjustable line under-voltage lockout. The device is available in a CPGA-20 high temperature ceramic package with the thermal shutdown feature disabled.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt LM5116WG Wide Range Synchronous Buck Controller datasheet (Rev. D) 17.03.2013
Anwendungshinweis Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12.03.2019
Anwendungshinweis Minimizing FET Losses For a High Input Rail Buck Converter (Rev. A) 23.04.2013

Design und Entwicklung

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Berechnungstool

LM5116-5116WG-25116DESIGN-CALC — Lm(2)5116/WG Schnellstart-Komponentenrechner

Willkommen beim Schnellstart-Designtool LM5116, LM5116WG und LM25116. Dieses eigenständige Tool unterstützt Stromversorgungsingenieure und ermöglicht diesen das Design eines DC/DC-Abwärtsreglers basierend auf einem Synchron-Abwärtsregler aus dieser Produktfamilie. Somit kann der Benutzer schnell zu (...)

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