Inicio Gestión de la energía Controladores CA/CC y CC/CC (FET externo)
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Gestión de la energía
Controladores CA/CC y CC/CC (FET externo)

TPS40345

ACTIVO

Controlador reductor síncrono de 3 V a 20 V, 25 A para aplicaciones de costo optimizado

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TPS40345

ACTIVO
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Detalles del producto

Vin (min) (V) 3 Vin (max) (V) 20 Iout (max) (A) 25 Operating temperature range (°C) -20 to 85 Control mode Voltage mode Topology Buck Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 18 Features Enable, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification Iq (typ) (µA) 2500 Duty cycle (max) (%) 90 Number of phases 1
Vin (min) (V) 3 Vin (max) (V) 20 Iout (max) (A) 25 Operating temperature range (°C) -20 to 85 Control mode Voltage mode Topology Buck Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 18 Features Enable, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification Iq (typ) (µA) 2500 Duty cycle (max) (%) 90 Number of phases 1
VSON (DRC) 10 9 mm² 3 x 3
  • Input Voltage Range From 3 V to 20 V
  • 600-kHz Switching Frequency
  • High- and Low-Side FET RDS(on) Current Sensing
  • Programmable Thermally Compensated OCP Levels
  • Programmable Soft-Start
  • 600-mV, 1.3% Reference Voltage
  • Voltage Feed-Forward Compensation
  • Supports Prebiased Output
  • Frequency Spread Spectrum
  • Thermal Shutdown Protection at 145°C
  • 10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad
  • Input Voltage Range From 3 V to 20 V
  • 600-kHz Switching Frequency
  • High- and Low-Side FET RDS(on) Current Sensing
  • Programmable Thermally Compensated OCP Levels
  • Programmable Soft-Start
  • 600-mV, 1.3% Reference Voltage
  • Voltage Feed-Forward Compensation
  • Supports Prebiased Output
  • Frequency Spread Spectrum
  • Thermal Shutdown Protection at 145°C
  • 10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad

The TPS40345 is a synchronous buck controller that operates from 3-V to 20-V input and which can be used in cost-optimized applications. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 600 kHz.

The frequency spread spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40345 offers design with a variety of user-programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS40345 enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40345 then enters a shutdown and restart cycle until the fault is removed.

The TPS40345 is a synchronous buck controller that operates from 3-V to 20-V input and which can be used in cost-optimized applications. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 600 kHz.

The frequency spread spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40345 offers design with a variety of user-programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS40345 enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40345 then enters a shutdown and restart cycle until the fault is removed.
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Documentación técnica

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* Data sheet TPS40345 3-V to 20-V Input Synchronous Buck Controller datasheet PDF | HTML 07 dic 2017
User guide TPS40345 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 03 ene 2022
Analog Design Journal Maximizing power density and thermal performance in power-module designs 12 dic 2018

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TPS40345EVM-353 — Módulo de evaluación de controlador reductor síncrono de entrada de 8 V a 14 V y salida de 1.2 V TPS

The TPS40345EVM-353 evaluation module (EVM) is a synchronous buck converter providing a fixed 1.2-V output at up to 20A from a 12-V input bus.
Guía del usuario: PDF | HTML
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Modelo de simulación

TPS40345 PSpice Transient Model

SLUM612.ZIP (85 KB) - PSpice Model
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Modelo de simulación

TPS40345 Unencrypted PSpice Transient Model

SLUM611.ZIP (9 KB) - PSpice Model
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VSON (DRC) 10 Ultra Librarian
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Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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