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TPS40050,pdf,datasheet,synchronous, step-down converters

  • 2013-09-22
  • 757.1KB
  • Points it Requires : 2

The TPS4005x is a family of high-voltage, wide input(8 V to 40 V), synchronous, step-down converters.The TPS4005x family offers design flexibility with avariety of user programmable functions, includingsoft-start, UVLO, operating frequency, voltage feedforward,high-side current limit, and loop compensation.The TPS4005x are also synchronizable to an externalsupply. They incorporate MOSFET gate drivers forexternal N-channel high-side and synchronous rectifier(SR) MOSFETs. Gate drive logic incorporatesanti-cross conduction circuitry to prevent simultaneoushigh-side and synchronous rectifier conduction.The TPS4005x uses voltage feed-forward controltechniques to provide good line regulation over the wide(4:1) input voltage range, and fast response to input linetransients with near constant gain with input variationwhich eases loop compensation.The externally programmable current limit providespulse-by-pulse current limit, as well as hiccup modeoperation utilizing an internal fault counter for longer duration overloads.

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