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PDF ISL68134 Data sheet ( Hoja de datos )
| Número de pieza | ISL68134 | |
| Descripción | PWM Controller | |
| Fabricantes | Intersil Corporation | |
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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 - VIN, VOUT, IOUT, 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
FN8817.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas LLC 2016. All Rights Reserved
Intersil (and design) and PowerNavigator are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL68134
Driver, DrMOS and Smart Power Stage Recommendation
INTERSIL PART
NUMBER
ISL99227
ISL99140
ISL6596
QUIESCENT CURRENT
(mA)
4.85
0.19
0.19
GATE
DRIVE VOLTAGE
(V)
5
5
5
NUMBER OF
DRIVERS
COMMENTS
Single 60A, 5x5 smart power stage
Single 40A, 6x6 DrMOS
Single Connect ISL6596 VCTRL to 3.3V
Internal Block Diagram
CS0
CSRTN0
CS1
CSRTN1
CS2
CSRTN2
CS3
CSRTN3
ADC
ADC
ADC
ADC
ISUM0
VDROOP
VSEN0
RGND0
VSA
ADC
VDROOP
VSEN1
RGND1
VSA
ADC
VINSEN
TMON0
TMON1
VCC
VCCS
LDO
CURRENT
AC FB
ISUM1
PID
Current
AC FB
PID
ADC
CYCLE-
CYCLE OCP
CYCLE-
CYCLE OCP
CYCLE-
CYCLE OCP
CYCLE-
CYCLE OCP
SUMMED
OCP
SUMMED
OCP
OV -
+
-
UV +
OV -
+
-
UV +
FAULT AND
TELEMETRY
MANAGER
FIGURE 1. INTERNAL BLOCK DIAGRAM
STATUS
MANAGER
LOOP
MANAGER
CPU
NVM
BLACKBOX
DIGITAL
DUAL EDGE
MODULATOR
DIGITAL
DUAL EDGE
MODULATOR
PMBUS
INTERFACE
AVSBUS
INTERFACE
PG0
PG1
TWARN
EN0
EN1
CONFIG
SA
P
H
A
S
PWM0
E
M PWM1
A
N PWM2
A
G
E
PWM3
R
SCL
SDA
SALRT
AVS_CLK
AVS_MDA
AVS_SDA
AVS_VDDIO
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September 28, 2016
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ISL68134
Electrical Specifications Recommended operating conditions, VCC = 3.3V, unless otherwise specified. Boldface limits apply across the
operating temperature range -40°C to +85°C. (Continued)
PARAMETER
TEST CONDITIONS
MIN MAX
(Note 7) TYP (Note 7) UNIT
AVS SDA, Output High Level
AVS SDA, Output Low Level
AVS CLK Frequency Range
0.8 * VDDIO
5
0.2 * VDDIO
50
V
V
MHz
SMBus/PMBus
SALERT, SDA Output Low Level
SCL, SDA Input High/Low Threshold
IOUT = 4mA
1.25
0.4
V
V
SCL, SDA Input Hysteresis
2 mV
SCL Frequency Range
0.05
2.00
MHz
NOTES:
6. These parts are designed and adjusted for accuracy with all errors in the voltage loop included.
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
Typical Performance Curves
0.08
0.05
0.07
0.04
0.06
0.05
0.04
0.03
-40
-20 0
20 40 60
AMBIENT TEMPERATURE (oC)
80
100
FIGURE 5. NOMINAL SUPPLY CURRENT vs TEMPERATURE
0.03
0.02
0.01
0
-40
-20 0
20 40 60 80
AMBIENT TEMPERATURE (oC)
100
FIGURE 6. SHUTDOWN SUPPLY CURRENT vs TEMPERATURE
Functional Description
Overview
The ISL68134 is a digital dual output 4-phase PWM controller that
can be programmed for a single output 4+0, dual output 3+1 or
2+2 phase operation. Operation using less than 4 phases
between 2 outputs is also supported. Existing digital multiphase
solutions utilize analog comparator based schemes (nonlinear) to
bolster the inadequate transient response common to many
digital multiphase solutions. The ISL68134 uses a linear voltage
regulation scheme to address transient loads. As a result, it is
much easier for users to configure and validate their designs when
compared with nonlinear schemes. By combining a proprietary low
noise and zero latency digital current sense scheme with cutting
edge digital design techniques, Intersil is able to meet transient
demands without resorting to nonlinear schemes. In addition, the
ISL68134 can store up to 8 user configurations in NVM and allows
the user to select the desired configuration via pin-strap (CONFIG).
The result is a system that is easy to configure and deploy.
A number of performance enhancing features are supported in
the ISL68134. These include AVSBus control, diode braking,
automatic phase dropping, DCR/resistor/smart power stage
current sense support, load line regulation and multiple
temperature sensing options.
To facilitate configuration development, the PowerNavigator™
GUI provides a step-by-step arrangement for setup and
parametric adjustment. Once a configuration has been set, the
user may employ PowerNavigator™ to monitor telemetry or use
direct PMBus interface based on the supported command set.
PWM Modulation Scheme
The ISL68134 uses Intersil's proprietary linear synthetic current
modulation scheme to improve transient performance. This is a
unique constant frequency, dual edge PWM modulation scheme
with both PWM leading and trailing edges being independently
moved to give the best response to transient loads. Current
balance is an inherent part of the regulation scheme. The
modulation scheme is capable of overlapping pulses should the
load profile demand such operation. In addition, the modulator is
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11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ISL68134.PDF ] | |
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