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PDF ISL68137 Data sheet ( Hoja de datos )
| Número de pieza | ISL68137 | |
| Descripción | 7-Phase Configurable PWM Controller | |
| Fabricantes | Intersil | |
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DATASHEET
Digital Dual Output, 7-Phase Configurable PWM
Controller with Adaptive Voltage Scaling (AVSBus) Bus
ISL68137
The ISL68137 is a digital dual output, flexible multiphase
(X+Y ≤ 7) PWM controller with AVSBus (Adaptive Voltage
Scaling interface). The ISL68137 can be configured to support
any desired phase assignments up to a maximum of 7 phases
across the 2 outputs (X+Y). For example, 6+1, 5+2, 4+2, 3+3,
3+2, or even a single output operation as a 7+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 ISL68137 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 the processor voltage, thus delivering a
balanced and power efficient solution. AVSBus can be used
exclusively once the device is configured via PMBus. The
ISL68137 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 ISL68137 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 ISL68137 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
- 7+0, 6+1, 5+2, 4+3 phase operation
- Operation using less than 7 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 stages
- Supports DCR sense with integrated temperature
compensation
• Supports phase doubler (ISL6617A) for up to 14-phase
operation
• 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
- ISL68137 product page
September 27, 2016
FN8757.0
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  
ISL68137
Driver, DrMOS and Smart Power Stage Recommendation
INTERSIL PART
NUMBER
ISL99227
ISL99140
ISL6596
ISL6617A
QUIESCENT CURRENT
(mA)
4.85
0.19
0.19
5
GATE DRIVE
VOLTAGE (V)
5
5
5
N/A
NUMBER OF
DRIVERS
Single
Single
Single
N/A
COMMENTS
60A, 5x5 smart power stage
40A, 6x6 DrMOS
Connect ISL6596 VCTRL to 3.3V
Phase doubler with 5V PWM output to be compatible with a 60A DrMOS or
with 60A smart power stage. Supports up to a 14-phase design.
Internal Block Diagram
CS0
CSRTN0
CS1
C SR TN 1
CS2
CSRTN2
CS3
CSRTN3
CS4
C SR TN 4
CS5
C SR TN 6
CS6
C SR TN 6
ADC
ADC
ADC
ADC
ADC
ADC
ADC
VDROOP
VSE N0
RGND0
VSA
ADC
VDROOP
VSE N1
RGND1
VSA
ADC
VINSEN
TMO N0
TMO N1
VCC
VCCS
LDO
CURRENT
AC FB
PID
CURRENT
AC FB
PID
ADC
C YC LE -
CYCLE OCP
C YC LE -
CYCLE OCP
C YC LE -
CYCLE OCP
C YC LE -
CYCLE OCP
C YC LE -
CYCLE OCP
C YC LE -
CYCLE OCP
C YC LE -
CYCLE OCP
SUMMED
OCP
SUMMED
OCP
OV -
+
-
UV +
OV -
+
-
UV +
FAULT AND
TELEMETRY
MANAGER
STATUS
MANAGER
LOOP
MANAGER
CPU
NVM
BLACKBO X
DIG ITAL DUAL
EDGE
MODULATOR
DIG ITAL DUAL
EDGE
MODULATOR
PMBus
INTERFACE
AVSBus
INTERFACE
FIGURE 1. INTERNAL BLOCK DIAGRAM
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5
PG0
PG1
TWARN
EN0
EN1
CONFIG
SA
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
SCL
SDA
SALRT
AVS_CLK
AVS_MDA
AVS_SDA
AVS_VDDIO
FN8757.0
September 27, 2016
5 Page 
ISL68137
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
Average Overcurrent Threshold Resolution
0.1 A
Cycle-by-Cycle Current Limiting Threshold Accuracy
0.1 A
DIGITAL DROOP
Droop Resolution
0.01 mV/A
OSCILLATORS
Accuracy of Switching Frequency Setting
When set to 500kHz
480 500 520 kHz
Accuracy of Switching Frequency Setting
-4 4 %
Switching Frequency Range
0.2 1.0 MHz
SOFT-START RATE AND VOLTAGE TRANSITION RATE
Minimum Soft-Start Ramp Rate
Programmable minimum rate
20 µs
Maximum Soft-Start Ramp Rate
Programmable maximum rate
10 ms
Soft-Start Ramp Rate Accuracy
-4 4 %
Minimum Transition Rate
Programmable minimum rate
0.1 mV/µs
Maximum Transition Rate
Programmable maximum rate
100 mV/µs
Transition Rate Accuracy
-4 4 %
PWM OUTPUT
PWMx Output High Level
PWMx Output Low Level
PWMx Output Tri-State IOL
PWMx Output Tri-State IOH
THERMAL MONITORING AND PROTECTION
IOUT = 4mA
IOUT = 4mA
VOH = VCC
VOL = 0V
VCC - 0.4
-1
V
0.4 V
1 µA
µA
Temperature Sensor Range
-50 150 °C
Temperature Sensor Accuracy
TMON to ADC accuracy
-4.5 4.5 %
TWARN Output Low Impedance
4 9 13
TWARN Hysteresis
3 °C
POWER-GOOD AND PROTECTION MONITORS
PG Output Low Voltage
PG Leakage Current
IOUT = 8mA load
With pull-up resistor externally connected to VCC
0.4 V
0.5 1.0 µA
Overvoltage Protection Threshold Resolution
1 mV
Undervoltage Protection Threshold Resolution
1 mV
Overvoltage Protection Threshold when Disabled
INPUT VOLTAGE SENSE
VCC - 0.2
V
Input Voltage Accuracy
VINSEN to ADC accuracy
-2.5 2.5 %
Input Voltage Protection Threshold Resolution
1 mV
AVSBus
AVSBus VDDIO Input Voltage Range
0.90
3.63
V
AVSBus CLK, MDA, Input High Level
AVSBus CLK, MDA, Input Low Level
0.6 * VDDIO
0.4 * VDDIO
V
V
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FN8757.0
September 27, 2016
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet ISL68137.PDF ] | |
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