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XRP6124 - Non-Synchronous PFET Step-Down Controller

Description

The XRP6124 is a non synchronous step down (buck) controller for up to 5Amps point of loads.

A wide 3V to 30V input voltage range allows for single supply operations from industry standard 3.3V, 5V, 12V and 24V power rails.

Features

  • 5A Point-of-Load Capable.
  • Down to 1.2V Output Voltage Conversion.
  • Wide Input Voltage Range.
  • 3V to 18V: XRP6124.
  • 4.5V to 30V: XRP6124HV.
  • Constant On-Time Operations.
  • Constant Frequency Operations.
  • No External Compensation.
  • Supports Ceramic Output Capacitors.
  • Built-in 2ms Soft Start.
  • Short Circuit Protection.

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Datasheet preview – XRP6124

Datasheet Details

Part number XRP6124
Manufacturer Exar
File Size 473.08 KB
Description Non-Synchronous PFET Step-Down Controller
Datasheet download datasheet XRP6124 Datasheet
Additional preview pages of the XRP6124 datasheet.

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Full PDF Text Transcription

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January 2011 XRP6124 Non-Synchronous PFET Step-Down Controller Rev. 1.1.0 GENERAL DESCRIPTION The XRP6124 is a non synchronous step down (buck) controller for up to 5Amps point of loads. A wide 3V to 30V input voltage range allows for single supply operations from industry standard 3.3V, 5V, 12V and 24V power rails. With a proprietary Constant On-Time (COT) control scheme, the XRP6124 provides extremely fast line and load transient response while the operating frequency remains nearly constant. It requires no loop compensation hence simplifying circuit implementation and reducing overall component count. The XRP76124 also implements an emulated ESR circuitry allowing usage of ceramic output capacitors and insuring stable operations without the use of extra external components.
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