Point-of-Load (PoL) DC/DC Conversion

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National Semiconductor's full-featured solutions for point-of-load (PoL) DC/DC conversion are designed to maximize power density and end-to-end power chain efficiency. High-efficiency point-of-load DC/DC converter ICs reduce power consumption and thermal dissipation and integrated solutions help reduce design complexity and time-to-market while enabling smaller form factors and lower system costs. All of National's PoL DC/DC converters are designed for best-in-class performance with advance process technology, chip-scale packaging, and proprietary circuitry.
     

Point-of-Load DC/DC Buck Converters

  Point of Load DC/DC Converters by Type Point-of-Load Linear/LDO Regulators Point-of-Load SIMPLE SWITCHER DC/DC Power Modules Point-of-Load Switching Voltage Regulators Point-of-Load MOSFET Controllers
 
     

LM21212/5 Synchronous Buck DC/DC Regulator Family

Mike demonstrates the LM21xxx synchronous buck regulator family with low Rdson MOSFETs. The LM21212 and LM21215 are the highest efficiency, high-current buck regulators and feature:

  • 12A () and 15A () buck regulators
  • Greater than 97% efficiency
  • External soft-start
  • Tracking and precision enable
  • Power good & pre-biased start-up
  • Enhanced system reliability
  • High accuracy current limit
  • Over-voltage protection, under voltage lockout, and over-current protection
  • WEBENCH® tool support
 
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Point-of-Load DC/DC Conversion Design Resources

   

Power Designer Articles Point-of-Load DC/DC

  • PD-131: Precision Output Current Limiting Using Average Current Monitor Feature
  • PD-130: Designing Non-Inverting Buck-Boost (Zeta) Converters with a Buck P-FET Controller
  • PD-129: Comparing the Merits of Integrated Power Modules versus Discrete Regulators
  • PD-111: Buck Regulator Topologies for Wide Input/Output Voltage Differentials
  • PD-102: Power Management Considerations for FPGAs and ASICs

Point-of-Load DC/DC Power Supply Reference Designs

  • RD-186: Small Split Rail Isolated +/- 5V Generator
  • RD-184: Low Noise Split Rail Non-Isolated Boost +/- 12V Power Supply

Point-of-Load DC/DC Conversion External Articles

 

Point-of-Load DC/DC Converter Demo Videos

Point-of-Load DC/DC Conversion Application Notes & Eval Board Manuals

  • AN-2157: Constant Current Constant Voltage Buck Converter with LM25085, or, Implementing Accurate Current Limit with LM25085
  • AN-2147: LM34923 Evaluation Board
  • AN-2140: LM21212-2 Evaluation Board
  • AN-2131: LM21215A-1 Evaluation Board
  • AN-2130: LM21215 Evaluation Board
  • AN-2129: Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter
  • AN-2119: LM8850 Evaluation Board
  • AN-2112: LM25117 Evaluation Board
  • AN-2107: LM21212-1 Evaluation Board
  • AN-2103: LM5117 Evaluation Board
  • AN-2066: LM25119 Evaluation Board
  • AN-2065: LM5119 Evaluation Board
  • AN-2050: LM5006 Evaluation Board
  • AN-1956: LM5001 Boost Evaluation Board
  • AN-1888: LM22670 Evaluation Board Inverting Topology and Application Notes