peculiarity
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PowerWise ® Buck controller
- Wide input voltage range of 6V to 42V
- Voltaje de salida fijo de 3.3V
- La frecuencia de conmutación fija es de 250 kHz/500 kHz/750
- No loop compensation requirements are required
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ALL WEBENCH ® enable
- Low external component count
- Fixed on-time control
- Ultra-fast transient response
- Stable low ESR capacitors
- Output voltage prebias start-up
- Valley current limit
- Programmable soft-start
illustrate
MEZCLADOR SIMPLE LM3151/2/3 ® The controller is a power controller that provides an output current of 12A in a typical application that enables easy use and simplified steps. Operando con un rango de voltaje de entrada de 6V a 42V, el LM3151/2/3 tiene un voltaje de salida fijo de 3.3V, conmutando características de frecuencia de 250 kHz, 500 kHz y 750 kHz. La arquitectura síncrona proporciona un diseño eficiente. El controlador LM3151/2/3 utiliza control patentado de modo de ondulación simulada (ERM) para condensadores de salida de baja ESR, lo que reduce el tamaño general de la solución y la ondulación del voltaje de salida, lo que permite una arquitectura fija a tiempo (COT). The fixed on-time (COT) regulatory architecture enables fast transient response without loop compensation, reducing external component count and design complexity.
Features such as thermal shutdown, undervoltage lockout, overvoltage protection, short-circuit protection, current limiting, output voltage fault protection, and prebias startup allow for a reliable and robust solution.
MEZCLADOR SIMPLE LM3151/2/3 ® The concept provides an easy-to-use complete design using minimal external component count and National Semiconductor's WEBENCH ® Online design tools. WEBENCH ® Provides design support at every step of the design process, including functions such as a new MOSFET selector, electrical simulation, thermal simulation, prototyping, and calculation of components external to the board.
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