LMR38020

Name: LMR38020
Brand: TI
SKU: LMR38020
Price: 1.102 USD

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Convertidor de potencia buck síncrono SIMPLE SWITCHER® 4,2 V a 80 V, 2 A, con IQ de 40 µA

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Hoja de datos

document-pdfAcrobat LMR38020 4.2-V to 80-V, 2-A, Synchronous SIMPLE SWITCHER Power Converter with 40-µA IQ datasheet (Rev. E) (Inglés) PDF | HTML

LMR38020

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Hoja de datos

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Detalles del producto

Rating

Catalog

Operating temperature range (°C)

-40 to 150

TI functional safety category

Functional Safety-Capable

Topology

Buck

Type

Converter

Iout (max) (A)

2

Vin (min) (V)

4.2

Vin (max) (V)

80

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2200

Features

Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed

EMI features

Spread Spectrum

Control mode

current mode

Vout (min) (V)

1

Vout (max) (V)

75

Iq (typ) (µA)

40

Duty cycle (max) (%)

98

Rating

Catalog

Operating temperature range (°C)

-40 to 150

TI functional safety category

Functional Safety-Capable

Topology

Buck

Type

Converter

Iout (max) (A)

2

Vin (min) (V)

4.2

Vin (max) (V)

80

Switching frequency (min) (kHz)

200

Switching frequency (max) (kHz)

2200

Features

Enable, Forced PWM, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Spread Spectrum, Synchronous Rectification, UVLO Fixed

EMI features

Spread Spectrum

Control mode

current mode

Vout (min) (V)

1

Vout (max) (V)

75

Iq (typ) (µA)

40

Duty cycle (max) (%)

98

HSOIC (DDA)

8

29.4 mm² 4.9 x 6

Functional Safety-Capable
- Documentation available to aid functional safety system design
Configured for rugged industrial applications
- 4.2-V to 80-V input voltage range
- 2-A continuous output current
- Ultra-low 40-µA operating quiescent current
- > 1.5-mm distance between VIN and GND pin
- 200-kHz to 2.2-MHz adjustable switching frequency
- Frequency synchronization to external clock
- Spread spectrum option for reduced EMI
- 97% maximum duty cycle
- Support start-up with pre-biased output
- ±1.0% tolerance voltage reference at room temperature
- Precision enable
- Easy to use device with integrated compensation network enabling low BOM count
- Integrated synchronous rectification
- 8-pin HSOIC with PowerPAD™ integrated circuit package
- PFM and forced PWM (FPWM) options
- Available in 1-A, LMR38010
Create a custom design using the LMR38020 with the WEBENCH Power Designer

Functional Safety-Capable
- Documentation available to aid functional safety system design
Configured for rugged industrial applications
- 4.2-V to 80-V input voltage range
- 2-A continuous output current
- Ultra-low 40-µA operating quiescent current
- > 1.5-mm distance between VIN and GND pin
- 200-kHz to 2.2-MHz adjustable switching frequency
- Frequency synchronization to external clock
- Spread spectrum option for reduced EMI
- 97% maximum duty cycle
- Support start-up with pre-biased output
- ±1.0% tolerance voltage reference at room temperature
- Precision enable
- Easy to use device with integrated compensation network enabling low BOM count
- Integrated synchronous rectification
- 8-pin HSOIC with PowerPAD™ integrated circuit package
- PFM and forced PWM (FPWM) options
- Available in 1-A, LMR38010
Create a custom design using the LMR38020 with the WEBENCH Power Designer

The LMR38020 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020 operates during input voltage dips as low as 4.2 V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input industrial applications and MHEV/EV systems.

The LMR38020 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020 is available in an 8-pin HSOIC PowerPAD integrated circuit package.

The LMR38020 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. The LMR38020 operates during input voltage dips as low as 4.2 V, at nearly 100% duty cycle if needed, making the device an excellent choice for wide input industrial applications and MHEV/EV systems.

The LMR38020 uses precision enable to provide flexibility by enabling a direct connection to the wide input voltage or precise control over device start-up and shutdown. The power-good flag, with built-in filtering and delay, offers a true indication of system status, eliminating the need for an external supervisor. The device incorporates pseudorandom spread spectrum for minimal EMI and switching frequency can be configured between 200 kHz and 2.2 MHz to avoid noise sensitive frequency bands. In addition, the frequency can be selected for improved efficiency at low operating frequency or smaller solution size at high operating frequency.

The device has built-in protection features such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR38020 is available in an 8-pin HSOIC PowerPAD integrated circuit package.

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Documentación técnica

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	Tipo	Título		Fecha
*	Data sheet	LMR38020 4.2-V to 80-V, 2-A, Synchronous SIMPLE SWITCHER Power Converter with 40-µA IQ datasheet (Rev. E)	PDF \| HTML	18 sep 2023
	Application note	Designing an Isolated Buck Converter using the LMR38020	PDF \| HTML	30 ago 2023
	Application note	Auxiliary Power Supply Design Based on LMR38020 Fly-Buck in Solar Micro Inverter	PDF \| HTML	29 ago 2023
	EVM User's guide	LMR38020EVM User Guide (Rev. A)	PDF \| HTML	19 sep 2022
	Functional safety information	LMR380x0 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA	PDF \| HTML	02 nov 2021

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

LMR38020EVM — Módulo de evaluación de convertidor reductor LMR38020 SIMPLE SWITCHER de 80 V, 2 A, 2,2 MHz con IQ d

El módulo de evaluación (EVM) LMR38020EVM es un circuito totalmente ensamblado y probado para evaluar el convertidor reductor LMR38020F. La placa dispone de un conector puente para indicar la señal POWERGOOD y la sincronización con el reloj externo. La placa también dispone de terminales de (...)

Guía del usuario: PDF | HTML

No disponible en TI.com

Placa de evaluación

LMR38020QEVM — Módulo de evaluación de convertidor de potencia LMR38020-Q1 SIMPLE SWITCHER® 80 V, 2 A, buck síncron

El módulo de evaluación (EVM) LM38020QEVM utiliza el LMR38020S-Q1, un regulador reductor de CC/CC de 80 V que emplea rectificación síncrona para lograr una alta eficiencia de conversión en un tamaño reducido. El EVM funciona en un amplio rango de tensión de entrada de 6 V a 80 V para proporcionar (...)

Guía del usuario: PDF | HTML

No disponible en TI.com

Modelo de simulación

LMR38020F PSpice Transient Model

SNVMC78.ZIP (288 KB) - PSpice Model

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Modelo de simulación

LMR38020S PSpice Transient Model

SNVMC92.ZIP (260 KB) - PSpice Model

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Diseños de referencia

TIDA-010950 — Diseño de referencia de amortiguador y controlador EEV con regulación de potencia y detección de

Este diseño de referencia muestra una solución de accionamiento de doble motor para actuadores de puertas y válvulas de expansión electrónicas. Los múltiples accionamientos de motor incluyen un controlador de motor bipolar de paso y un controlador de motor de CC sin escobillas que funcionan desde (...)

Design guide: PDF

Encapsulado	Pines	Símbolos CAD, huellas y modelos 3D
HSOIC (DDA)	8	Ultra Librarian

Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

LMR38020

Convertidor de potencia buck síncrono SIMPLE SWITCHER® 4,2 V a 80 V, 2 A, con IQ de 40 µA

LMR38020

Detalles del producto

Productos similares que pueden interesarle

Misma funcionalidad con diferente configuración de pines que el dispositivo comparado

Documentación técnica

Diseño y desarrollo

LMR38020EVM — Módulo de evaluación de convertidor reductor LMR38020 SIMPLE SWITCHER de 80 V, 2 A, 2,2 MHz con IQ d

LMR38020QEVM — Módulo de evaluación de convertidor de potencia LMR38020-Q1 SIMPLE SWITCHER® 80 V, 2 A, buck síncron

LMR38020F PSpice Transient Model

LMR38020S PSpice Transient Model

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Pedidos y calidad

Soporte y capacitación

Foros de TI E2E™ con asistencia técnica de los ingenieros de TI

Serie de videos

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