The LM25148-Q1 is a 42-V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM25148-Q1 can be set up in idual-phase mode (paralleled output) with accurate current sharing for high-current applications. It can operate at input voltages as low as 3.5 V, at nearly 100% duty cycle if needed.
The LM25148-Q1 has a unique EMI reduction feature known as dual random spread spectrum (DRSS). Combining low-frequency triangular and high-frequency random modulations mitigates EMI disturbances across lower and higher frequency bands, respectively. This hybrid technique aligns with the multiple resolution bandwidth (RBW) settings specified in industry-standard EMC tests.
Additional features of the LM25148-Q1 include 150°C maximum junction temperature operation, user-selectable diode emulation for lower current consumption at light-load conditions, open-drain power-good flag for fault reporting and output monitoring, precision enable input, monotonic start-up into prebiased load, integrated VCC bias supply regulator, internal 3-ms soft-start time, and thermal shutdown protection with automatic recovery.
The LM25148-Q1 controller comes in a 3.5-mm × 5.5-mm thermally enhanced, 24-pin VQFN package with wettable flank pins to facilitate optical inspection during manufacturing.
| Tipo | Título | Fecha | ||
|---|---|---|---|---|
| * | Data sheet | LM25148-Q1 42-V, Automotive, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum datasheet (Rev. A) | PDF | HTML | 13 feb 2023 |
| Test report | Power Delivery Reference Design for AMD Versal™ AI Edge Series | PDF | HTML | 25 mar 2024 | |
| Application note | How to Implement a Simple Constant Current Regulation Scheme to a PCM Based Buck | PDF | HTML | 16 ago 2023 | |
| User guide | LM25149-Q1 EVM User's Guide (Rev. A) | PDF | HTML | 29 abr 2022 | |
| Functional safety information | LM25148-Q1 Functional Safety, FIT Rate, Failure Mode Distribution and Pin FMA | PDF | HTML | 28 sep 2021 |
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.
El módulo de evaluación (EVM) de alta densidad LM5149‑Q1EVM‑400 está diseñado para mostrar el rendimiento del controlador reductor de CC/CC síncrono de alto rendimiento para automoción LM5149‑Q1. El EVM funciona en un amplio rango de tensión de entrada de 15 V a 72 V para brindar una salida fija de (...)
| Paquete | Pasadores | Descargar |
|---|---|---|
| VQFN (RGY) | 24 | Ver opciones |
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.