LM5158-Q1
Convertidor elevador, de retorno y SEPIC con VIN amplia de 3 A, 85 V y 2.2 MHz y amplio espectro ale
LM5158-Q1
- AEC-Q100 qualified for automotive applications
- Temperature grade 1: –40°C to +125°C TA
- Functional Safety-Capable
- Suited for wide operating range for car battery applications
- 3.2-V to 60-V input operating range (65-V abs max)
- 83-V maximum output (85-V abs max)
- Minimum boost supply voltage of 1.5 V when BIAS ≥ 3.2 V
- Input transient protection up to 65 V
- Minimized battery drain
- Low shutdown current (IQ ≤ 2.6 µA)
- Low operating current (IQ ≤ 670 µA)
- Small solution size and low cost
- Maximum switching frequency up to 2.2 MHz
- 16-pin QFN package (3 mm × 3 mm) with wettable flanks
- Integrated error amplifier allows primary-side regulation without optocoupler (flyback)
- Minimized undershoot during cranking
- Accurate current limit (see the Device Comparison Table)
- EMI mitigation
- Selectable dual random spread spectrum
- Lead-less package
- Higher efficiency with low-power dissipation
- 133-mΩ RDSON switch
- Fast switching, small switching loss
- Avoid AM band interference and crosstalk
- Optional clock synchronization
- Dynamically programmable wide switching frequency from 100 kHz to 2.2 MHz
- Integrated protection features
- Constant current limiting over input voltage
- Selectable hiccup mode overload protection
- Programmable line UVLO
- OVP protection
- Thermal shutdown
- Accurate ±1% accuracy feedback reference
- Adjustable soft start
- PGOOD indicator
- Create a custom design using the LM5158x -Q1 with the WEBENCH Power Designer
The LM5158x -Q1 device is a wide input range, non-synchronous boost converter with an integrated 85-V, 3.26-A (LM5158 -Q1) or 85-V, 1.63-A (LM51581 -Q1) power switch.
The device can be used in boost, SEPIC, and flyback topologies. It can start up from a single-cell battery with a minimum of 3.2 V. It can operate with the input supply voltage as low as 1.5 V if the BIAS pin is greater than 3.2 V.
The BIAS pin operates up to 60 V (65-V absolute maximum) for automotive load dump. The switching frequency is dynamically programmable from 100 kHz to 2.2 MHz with an external resistor. Switching at 2.2 MHz minimizes AM band interference and allows for a small solution size and fast transient response. The device provides a selectable Dual Random Spread Spectrum to help reduce the EMI over a wide frequency range.
The device features an accurate peak current limit over the input voltage, which avoids overdesigning the power inductor. Low operating current and pulse-skipping operation improve efficiency at light loads.
The device has built-in protection features such as overvoltage protection, line UVLO, thermal shutdown, and selectable hiccup mode overload protection. Additional features include low shutdown IQ, programmable soft start, precision reference, a power-good indicator, and external clock synchronization.
Documentación técnica
Tipo | Título | Fecha | ||
---|---|---|---|---|
* | Data sheet | LM5158x-Q1 2.2-MHz Wide VIN 85-V Output Boost/SEPIC/Flyback Converter with Dual Random Spread Spectrum datasheet (Rev. A) | PDF | HTML | 20 oct 2021 |
White paper | Isolated Bias Power Supply Architecture for HEV and EV Traction Inverters | PDF | HTML | 11 oct 2023 | |
Application note | How to Implement the Soft Start in a Flyback | PDF | HTML | 10 jul 2023 | |
Application note | How to Design an Isolated Flyback Converter Using LM5157x/LM5158x (Rev. A) | PDF | HTML | 16 mar 2023 | |
Application note | Basic Calculation of a Coupled Inductor SEPIC Power Stage | PDF | HTML | 13 mar 2023 | |
Application note | How to Design a Boost Converter Using LM5157x, LM5158x | PDF | HTML | 11 nov 2021 | |
Functional safety information | LM5158x-Q1 Functional Safety FIT Rate, FMD and Pin FMA | PDF | HTML | 20 sep 2021 | |
Technical article | Lowering audible noise in automotive applications with TI’s DRSS technology | PDF | HTML | 18 mar 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.
LM5157EVM-SEPIC — Módulo de evaluación LM5157 para SEPIC
El módulo de evaluación LM5157EVM-SEPIC muestra las características y el rendimiento del LM5157 como convertidor SEPIC no síncrono de entrada amplia. La configuración estándar está diseñada para proporcionar una salida regulada de 12 V a un máximo de 1 A a partir de una entrada de 4 V a 32 V y (...)
LM5158EVM-BST — Módulo de evaluación LM5158-Q1 de convertidor elevador
LM5158EVM-FLY — Módulo de evaluación LM5158-Q1 de convertidor de retorno
LM5158x-Q1 PSpice Boost Average Model (Encrypted)
LM5158x-Q1 PSpice Transient Model (Encrypted) (Rev. A)
SNVR511 — LM5157 and LM5158 Quickstart Calculator for Boost Regulator Design
Productos y hardware compatibles
Productos
Convertidores de CA/CC y CC/CC (FET integrado)
SNVR512 — LM5157 and LM5158 Quickstart Calculator for SEPIC Regulator Design
Productos y hardware compatibles
Productos
Convertidores de CA/CC y CC/CC (FET integrado)
TIDA-020060 — Diseño de referencia de líneas de alimentación a través de datos para aplicaciones Ethernet 100/1000
PMP31139 — Pequeño diseño de referencia SEPIC para automoción con FET integrado de 80 V
Encapsulado | Pines | Símbolos CAD, huellas y modelos 3D |
---|---|---|
WQFN (RTE) | 16 | Ultra Librarian |
Pedidos y calidad
- 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
- Lugar de fabricación
- Lugar de ensamblaje
Soporte y capacitación
Foros de TI E2E™ con asistencia técnica de los ingenieros de TI
El contenido lo proporcionan “tal como está” TI y los colaboradores de la comunidad y no constituye especificaciones de TI. Consulte los términos de uso.
Si tiene preguntas sobre la calidad, el paquete o el pedido de productos de TI, consulte el soporte de TI.