ISL68134_16 Datasheet, PDF (1/50 Pages) Intersil Corporation – Digital Dual Output, 7-Phase Configurable PWM

DATASHEET
Digital Dual Output, 4-Phase Configurable, PWM
Controller with Adaptive Voltage Scaling (AVSBus) Bus
ISL68134
The ISL68134 is a digital dual output, flexible multiphase
(X+Y ≤ 4) PWM controller with AVSBus (Adaptive Voltage Scaling
interface). Either output can be configured to support any desired
phase assignments up to a maximum of 4 phases across the 2
outputs (X+Y). For example, 3+1, 2+2, 2+1, or even a single
output operation as a 4+0 configuration are supported. The
flexible phase arrangement, combined with PMBus and AVSBus
interfaces, allows the device to support any demanding power
supply requirement. The ISL68134 with AVSBus complements
PMBus by providing a common interface that accelerates
point-to-point communication between the controller and the load
to statically and dynamically control processor voltage, thus
delivering a balanced and power efficient solution. AVSBus can be
used exclusively once the device is configured via PMBus. The
ISL68134 utilizes Intersil’s proprietary linear synthetic digital
current modulation scheme to achieve the industry’s best
combination of transient response and ease of tuning while
addressing the challenges of modern multiphase designs.
Device configuration and telemetry monitoring is accomplished
using Intersil's intuitive PowerNavigator™ GUI. The ISL68134
device supports on-chip nonvolatile memory to store various
configuration settings that are user selectable via pin-strap, giving
system designers increased power density to configure and
deploy multiple configurations. The device supports an automatic
phase add/drop feature to allow maximum efficiency across all
load ranges. Thresholds for automatic phase add/drop are user
programmable using the powerful PowerNavigator GUI.
The ISL68134 supports a comprehensive fault management
system to enable the design of highly reliable systems. From a
multitiered overcurrent protection scheme, to the configurable
power-good and output overvoltage/undervoltage fault
thresholds and temperature monitoring, virtually any need is
accommodated.
With minimal external components, easy configuration, robust
fault management and highly accurate regulation capability,
implementing a high performance multiphase regulator has
never been easier.
Applications
• Networking equipment
• Telecom/datacom equipment
• Server/storage equipment
• Point-of-load power supply (Memory, DSP, ASIC, FPGA)
Features
• PMBus™ 1.3 and AVSBus compliant
- Telemetry - V_IN, V_OUT, I_OUT, power IN/OUT, temperature
and various fault status registers
- Individual AVSBus interface enables high speed voltage
changes
• Advanced linear digital modulation scheme
- Zero latency synthetic current control for excellent HF
current balance
- Dual edge modulation for fastest transient response
• Auto phase add/drop for excellent load vs efficiency profile
• Flexible phase configuration
- 4+0, 3+1, 2+2 phase operation
- Operation using less than 4 phases between 2 outputs is
also supported
• Diode braking for overshoot reduction
• 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
• Comprehensive fault management enables high reliability
systems
- Pulse-by-pulse phase current limiting
- Total output current protection
- Output and input OV/UV
- Open voltage sense detect
- Black box recording capability for faults
• Intuitive configuration via PowerNavigator™ GUI
- NVM to store up to 8 configurations
• Pb-free (RoHS compliant)
Related Literature
• For a full list of related documents, visit our website
- ISL68134 product page
September 28, 2016
1
FN8817.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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