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RT6543A - High Efficiency Single Synchronous Buck PWM Controller

General Description

The RT6543A/B PWM controller provides high efficiency, excellent transient response, and high DC output accuracy for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM.

Key Features

  • A High Efficiency Step-Down DC-DC Controller.
  • Built-in 1% Reference Voltage.
  • 2-Bit Programmable Output Voltage with Integrated.
  • Adjustable Switching Frequency.
  • Input Voltage Range : 3V to 24V.
  • Internal Soft-Start to Reduce Inrush Current.
  • Capability of Driving Large Synchronous Rectifier MOSFETs.
  • Power Good Indicator.
  • Cycle-by-Cycle Current Limit.
  • Over-/Under-Voltage Protection.
  • Thermal Shutdown.
  • RT6543A : Slew Down Mode as VID Change.

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Datasheet Details

Part number RT6543A
Manufacturer Richtek
File Size 333.21 KB
Description High Efficiency Single Synchronous Buck PWM Controller
Datasheet download datasheet RT6543A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® RT6543A/B High Efficiency Single Synchronous Buck PWM Controller for INTEL VCCIN AUX ICL and TGL General Description The RT6543A/B PWM controller provides high efficiency, excellent transient response, and high DC output accuracy for stepping down high voltage batteries to generate low voltage CPU core, I/O, and chipset RAM. The RT6543A/B supports on chip voltage programming function between 0V and 1.8V by controlling VID1/VID0 inputs. Compared with conventional current-mode PWMs, the RT6543A/B achieves high efficiency without any current sensing resistors. Furthermore, the RT6543A/B has ability to drive synchronous rectifier MOSFETs and enters diode emulation mode at light load condition that also save lots of power consumption.