Single-Phase R4™ Digital Hybrid PWM Controller and 25A DrMOS Module Demonstration Board


The ISL68201-99125DEMO1Z is a 6-layer board demonstrating a compact 13mmx13mm 16A synchronous buck converter. Transient performance, fault protections, DC/AC regulations, PMBus programming, power sequencing, margining and other features can be evaluated using this board.

The ISL68201 is a single-phase synchronous buck PWM controller featuring Intersil's proprietary R4™ Technology, which has extremely fast transient performance, accurately regulated frequency control and all internal compensation. The ISL68201 supports a wide 4.5V to 24V input voltage range and a wide 0.5V to 5.5V output range. It includes programmable functions and telemetries for easy use and high system flexibility using SMBus, PMBus, or I2C interface.

The ISL99125B is a DrMOS power stage compatible with Intersil's 5V PWM controllers. They use DCR sensing network and associated thermal compensation. Light-load efficiency is supported via a dedicated FCCM control pin. An industry leading thermally enhanced 3.5x5 QFN 24 Ld package allows minimal overall PCB real estate.

The PMBus dongle (ZLUSBEVAL3Z), i.e., USB-to-PMBus™ adapter, and USB cable are included in the demonstration kit. Download PowerNavigator™ software to evaluate the full PMBus functionality of the ISL68201.

Key Features

  • 16A synchronous buck converter with PMBus control
  • On-board transient load with adjustable di/dt
  • Configurable through resistor pins
  • Cascadable PMBus connectors
  • Integrated LDOs for single rail solution
  • Enable switch and power-good indicator
  • All ceramics solution with SP capacitor footprint option


  • High-efficiency and high-density VRM and VRD
  • Core, graphic, and memory regulators for microprocessors
  • High-density VR for server, networking, and cloud computing
  • POL DC/DC converters and video gaming consoles

ISL68201-99125DEMO1Z PWM Controller Demo Board Top

ISL68201-99125DEMO1Z PWM Controller Demo Board Top

ISL68201-99125DEMO1Z PWM Controller Demo Board Bottom

ISL68201-99125DEMO1Z PWM Controller Demo Board Bottom

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