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LM5116-HT

ACTIVO

Controlador reductor síncrono de 80 V, rango amplio y alta temperatura

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Misma funcionalidad con diferente configuración de pines que el dispositivo comparado
LM5146 ACTIVO Controlador DC/DC reductor síncrono de 100 V con amplio rango de ciclo de trabajo Smaller device footprint optimized for EMI requirements.

LM5116-HT

ACTIVO
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Detalles del producto

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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos LM5116-HT Wide Range Synchronous Buck Controller datasheet (Rev. B) 31/01/2014
Informe Valuing wide VIN, low EMI synchronous buck circuits for cost-driven, demanding a (Rev. A) 10/04/2019
Nota sobre la aplicación Understanding Inverting Buck-Boost Power Stages in Switch Mode Power Supplies (Rev. B) 12/03/2019

Diseño y desarrollo

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Modelo de simulación

LM5116 PSpice Average Model

SNVM346.ZIP (53 KB) - Modelo PSpice
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SNVM345C.ZIP (101 KB) - Modelo PSpice
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LM5116 TINA-TI Transient Reference Design (Rev. B)

SNVM051B.TSC (159 KB) - Diseño de referencia TINA-TI
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LM5116 TINA-TI Transient Spice Model (Rev. B)

SNVM052B.ZIP (15 KB) - Modelo TINA-TI Spice
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LM5116 Unencrypted PSpice Average Model

SNVM959.ZIP (2 KB) - Modelo PSpice
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LM5116 Unencrypted PSpice Transient Model (Rev. A)

SNVM958A.ZIP (6 KB) - Modelo PSpice
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
CDIP_SB (JD) 20 Ultra Librarian
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