CHL8100 – 4 Phase Intelligent Digital PWM Controller

CHL8100 Product Brief (pdf)

CHL8100 Datasheet (pdf) registered users only

FEATURES

• Digital closed loop feedback requires no external components

Parametric Data

	Min	Max
Vbias	3.0V	3.63V
Vout	0.5V	1.6V
Fsw	200kHz	1MHz
Iout		150A

• Adaptive Digital Control regulates Vout during load transients with fewer output bulk capacitors
• Selectable from 2, 3 & 4 phase operation
• Switching frequency configurable from 200kHz to 1MHz, precision better than 5%
• Load Line configurable from 0mΩ to 1.5mΩ
• Highly accurate differential DCR current sensing
• Digital phase current balancing, DC and transients

• Configurable soft-start
• Digitally adjustable fault detection and protection: OVP, UVP, OCP
• SMBus interface for configuring and monitoring
• PSI feature improves light load efficiency
• Highly accurate IMON output
• MOSFET driver compatability - ODB, Tri-state & CHiL proprietary fast Tri-level
• QFN (quad flat no lead) lead-free RoHS compliant package
• Intel VR11.1, VR11.0 compliant

DESCRIPTION

CHL8100 is a digital multiphase synchronous buck controller designed for use in high frequency DC-DC converters to power CPU and GPU microprocessors loads.

The CHL8100 supports core voltage and load requirements for INTEL® VR11.x applications, including the PSI and IMON features. CHL8100 can be used for VR designs capable of delivering up to 150A. The interleaved high frequency switching of the buck phases provides benefits of higher efficiency, reduced costs and reduced PCB footprint.

The unique non-linear control algorithm uses configuration parameters stored in the internal Non Volatile Memory (NVM) to deliver unmatched fast transient response and accurate steady state behavior for optimized VR component selection. Design and debug is greatly simplified by use of the CHiL IPD (Intuitive power Designer) GUI to easily access the registers during for a “set and forget” approach.

APPLICATIONS

Typical Application

• High current DC/DC Converters 
• Multiphase synchronous buck converter for desktop computers using Intel® VR11.x microprocessors
• High efficiency and compact VRM

DESIGN TOOLS

CHiL IPD - The IPD (Intuitive power Designer) is a graphical user interface (GUI) used to assist in multiphase VR designs using the CHL8100 controller. It is a comprehensive tool that encompasses the three key elements of bringing an easy digital VRD design to production: Design, Configuration and Monitoring.

Device Layout Symbol - Library files for device layout in Cadence® Allegro® version 15 format

RELATED DEVICES

• CHL8500 - Synchronous Buck MOSFET Driver with unique fast tri-state PWM signal for phase shedding

ORDERING INFORMATION

Part #	Status	Temp (ºC)	Package/ Pins	Standard quantity	RoHS Compliance
CHL8100CRT	Active	Commercial	QFN / 40	Tape & reel, 3000	Y