Digital Dual Output, 4-Phase Configurable, VR13 PWM Controller
The
ISL69125
is a digital dual output, flexible multiphase
(X+Y
≤
4) PWM controller designed to be compliant with Intel
VR13 specifications. The digital multiphase controller can be
configured to support any desired phase assignments up to a
maximum of 4 phases across the two outputs (X and Y). For
example, 3+1, 2+2, or even a single output operation as a 4+0
configuration are supported. With a flexible X+Y
≤
4 phase
assignment along with PMBus and SVID interfaces, it is ideal
for controlling the microprocessor core, memory, and system
rails of Intel VR13 platforms.
The ISL69125 uses the Renesas proprietary digital linear
synthetic current modulation scheme to achieve the industry’s
best combination of transient response and ease of tuning while
addressing the challenges of powering the latest generation of
Intel microprocessors. Device configuration and telemetry
monitoring are accomplished using the intuitive
PowerNavigator™ software. Diode emulation and automatic
phase add/drop features allow the user to extract maximum
efficiency from the converter regardless of load conditions.
The ISL69125 supports a comprehensive fault management
system to enable the design of highly reliable systems. From
an overcurrent protection scheme including peak and average
detection, to the configurable power-good and catastrophic
fault protection flags, any need is accommodated.
With minimal external components, the ability to store 8
configurations, robust fault management, and highly accurate
regulation capability, implementing a high-performance,
multiphase regulator has never been easier.
FN8738
Rev. 1.00
Jan 4, 2018
Features
• Advanced linear digital modulation scheme
- Zero latency synthetic current control for excellent high
frequency current balance
- Auto phase add/drop for excellent load vs efficiency
profile
- Excellent DVID performance
- Dual edge modulation for faster transient response
• Flexible phase assignment from 0 to 4 phases per output
• Up to 1MHz operation for high density designs
• Diode braking for overshoot reduction
• Diode emulation for enhanced light-load efficiency
• Differential remote voltage sensing supports ±0.5%
closed-loop system accuracy over load, line and temperature
• Highly accurate current sensing for excellent load line
regulation and accurate OCP
- Supports ISL99227 60A smart power stage
- Supports DCR sense with integrated temperature
compensation
• Supports external input current sense required for NVDIMM
• Comprehensive fault management enables high reliability
systems
- Pulse-by-pulse phase current limiting
- Total output current protection
- Output and input OV/UV protection
- Open voltage sense detect
- Black box recording capability for faults
- Configurable Catastrophic Failure Protection (CFP) flag
output
• Intuitive configuration using
PowerNavigator
• SMBus/PMBus v1.3 compatible
- Up to 2MHz bus interface
- NVM to store up to 8 configurations
• Pb-free (RoHS compliant)
Applications
• Core and memory for Intel VR13 based designs
- High performance server core and memory rails
- High performance graphics rails
• Networking, data center, storage, and general purpose
FN8738 Rev. 1.00
Jan 4, 2018
Page 1 of 2
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